TPITuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Can anyone post a picture of a MAP sensor on a 5.7 L tpi please.
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__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
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I don't have a map sensor, but I DO believe I know whats wrong with your fuel pressure gauge. If its meant to be on there permanent which I believe it is, you need to decore the Schrader valve. The schrader valve is the exact thing as a tire valve stem. Go to WalMart and look in the "flat tire repair" section and they'll have the de-core-der. Its a little stick you stick inside the vavle and twist and it takes the core out... the core is just threaded in... If you don't know what it looks like, find the "Green Slime" stuff used to repair flat tires. The tip of those is a stem de-core-der...
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
OHHHHH okay i know exactly what that it. Im a bike tech at a sporting goods store. I didnt think of that. I sat there and was like hmmm.....theres no way this thing will push down on the actual valve. It also gave me some other thing i thing to screw into it. I think i got it. hahahaha.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
Well im still curious about my runner gaskets? Do i need new ones since i just got my motor rebuilt or should i say F*** it and buy new ones anyways. As far as the FPR goes, I went ahead and ordered the Holley Adjustable Fuel Pressure Regulator off of Summit.com. (http://www.summitracing.com/parts/HLY-512-501/). Will this work? Anyone had any luck with it so far?
just a note, you live in cal as i do.
adjustable regulators are not legal for any vehicle that operate on the highways - off road use only.
so use it if you want but dont advertise on a web site you are breaking the law.
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
yeah California really does suck. FML and **** this place.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
Hold the phone, TPIS fuel pressure regulator has a carb eo number for their regulator. I don't work for them and it isn't very well known but I could get you that eo number if you want it. This way you can be assured that it is legal.
Honestly, I think if you keep the fuel pressure at stock (or even a tad lower) at emissions testing, I think you should be able to get away with it, specially since the afpr is mostly hidden under the plenum...
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
yeah i mean i hav it running at 43 PSI. and if i fail the emissions test, ill just lower the fuel pressure again i guess.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
Labor time is 4.6 hrs to replace the regulator. At my shop it would be $525 to replace the regulator, thats parts and labor. That labor time seems alittle high to me, but that's what's in the labor guide.
that labor guide is what you charge insurance companies, and its always off by 2/3rds. i have never seen a project take as long as the labor guide says - unless you stop for multiple beer breaks.
that would be great if you have it. but it may be an old carb number and carb keeps changing the rules. what was legal in 2008 for cats is not legal in 2009.
but i would like to see that.
the reason they dont want to use an adjustable regulator is so you cant change the pressure and make it appear to be legal when it isn't.
and i like cal. been here all my life and traveled all over the world and best place to live is here, despite the smog nazis.
hey 3rdgen - did you use the pressure gage to do the setup and then you take it off so that all that shows if the regulator? that might get past the visual. and did the bike core puller work?
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
hey 3rdgen - did you use the pressure gage to do the setup and then you take it off so that all that shows if the regulator? that might get past the visual. and did the bike core puller work?
Yeah i actually found a metal bike core puller at work and pulled the schrader core, then just put the guage on and then set the pressure. I took it off when i was done because of fear of leaking.
it only took me about an hour after i got it on and to tune it. Getting the core out and making sure there were no leaks was a huge thing before i started it. But it was a fun little project.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
TPI ADJUSTABLE FUEL PRESSURE REGULATOR KIT
P/N 512-501
Installation Instructions
WARNING! THESE INSTRUCTIONS MUST BE READ AND FULLY UNDERSTOOD BEFORE BEGINNING THE INSTALLATION. FAILURE TO
FOLLOW THESE INSTRUCTIONS MAY RESULT IN POOR PERFORMANCE, VEHICLE DAMAGE, PERSONAL INJURY, OR DEATH.
IF THESE INSTRUCTIONS ARE NOT FULLY UNDERSTOOD, INSTALLATION SHOULD NOT BE ATTEMPTED. PLEASE CONSULT
HOLLEY TECH SERVICE OR A QUALIFIED MECHANIC.
INTRODUCTION:
Holley Performance Products cannot and will not be responsible for any alleged or actual engine or other damage, or other conditions resulting from
misapplication of the fuel pressure regulators described herein. However, it is our intent to provide the best possible products for our customer; products
that perform properly and satisfy your expectations. Should you need information or parts assistance, please contact our Technical Service Department
at 1-270-781-9741, Monday through Friday, 7 a.m. to 5:00 p.m. Central Time. Please have the part number of the product you purchased when you call.
KIT CONTENTS
• Adjustment Knob • Vacuum Fitting (attached to Housing) • Regulator Spring
• Regulator Housing • Spring Washer • Diaphragm
ADDITIONAL PARTS AND TOOLS REQUIRED
• T10 Tamperproof Torx Bit • 3/8" Drive Socket Set
• Plenum to Intake Runner Gaskets GM P/N 10174951 • Hammer
FUEL PRESSURE REGULATOR INSTALLATION:
The fuel pressure regulator in this instruction sheet is designed to be an adjustable replacement for the stock O.E. regulator. The adjustable fuel
pressure regulator is used mainly for high performance applications. A fuel pressure gauge must be purchased for setting the fuel pressure. Install the
fuel pressure gauge according to the manufacturer’s recommendation. The Holley TPI adjustable fuel pressure regulator kit will reuse the torx screws
and base. DO NOT discard or damage these items during disassembly. Use Figure 1 as a guide for assembling the kit. It will also be necessary to
purchase new Plenum to intake runner gaskets GM P/N 10174951, for this installation.
WARNING! Always use a fuel pressure gauge when adjusting the fuel pressure. Excessive fuel pressure may effect performance or damage
the fuel system.
WARNING! Wipe up any spilled fuel after the installation has been completed. Spilled fuel can ignite on a hot engine, causing a fire and/or
explosion, which may result in property damage, serious injury, and/or death.
1. Remove the gas cap from the fuel tank and pull the fuel pump fuse from the fuse block located under the hood. Now try to start the motor. This will
let the fuel pressure drop, preventing excess fuel spillage when removing the regulator cover.
2. Disconnect the battery.
3. Remove the vacuum lines from the rear of the plenum, noting the locations. The power brake line is on the left rear of the plenum and the two
smaller vacuum lines are on the right rear. Disconnect the two water lines from the under side of the throttle body.
4. Remove the 8 bolts that hold the plenum to the intake runners. With a rubber mallet tap lightly on the plenum until it is loose. Lift the plenum up
and disconnect the electrical connector. Set plenum aside.
5. To remove the regulator cover on the O.E. regulator, use a T10 Tamperproof Torx bit. DO NOT discard the screws.
6. Remove the regulator cover, regulator spring, and diaphragm.
7. To ease the installation of the Holley fuel pressure kit, remove the adjustable knob from the regulator cover. Place the spring washer inside the
Holley regulator cover, then the spring, and finally the diaphragm. It is very important for the diaphragm to be installed as shown in Figure 1.
Figure 1
8. Place the Holley regulator assembly over the regulator base, aligning the screw holes on the base of the regulator, the diaphragm and the cover.
Tighten cover down using the 6 torx screws removed earlier.
9. Loosely screw the adjustment knob into the top of the regulator housing.
10. To finish reverse steps 1 - 6, using new gaskets between the runners to plenum surfaces.
11. Refill to the correct coolant level.
12. Once everything is back together, turn the key to the run position and have somebody watch for fuel leaks. If no leaks are present, start the car.
13. A good starting point for the fuel pressure is 47 psi. However, you may find your particular combination to perform best above ore below this
number. Pressure must be set with the regulator vacuum hose removed. Turn the knob clockwise to raise pressure and counter-clockwise to lower
pressure. The adjustment range for this regulator is from 30 to 65 psi.
Copyright
BBK Adjustable Fuel Pressure Regulator
For Tuned Port Injection GM Engines
Part # 1714
INS-060
This regulator is designed for use on Tuned Port Injection equipped GM engines only. Please read these instructions
before starting your installation.
We highly recommend having a service manual for your vehicle at hand before you start the installation. This will assist
you in removing specific items along with giving you the necessary torque settings for reassembly.
The fuel flow capabilities of Tuned Port Injection (TPI) systems is directly effected by fuel pressure. Changing the fuel
pressure will allow you to fine tune a particular engine combination.
Step 1 With a fuel injection pressure guage installed, turn the ignition key on and off several times, without starting the
engine and record the stock fuel pressure.
Step 2 With the engine cold, carefully relieve the pressure from the fuel rail. This can be done with one of the many
tools designed specifically for this purpose that attach to the Schrader valve that is mounted to the fuel rail. Use
caution to reduce the chance of fire or fuel spraying.
If you do not have a pressure relief tool, you may perform the following procedure. Remove the “Fuel Pump” fuse from
the fuse panel. Start the engine and let it run until the fuel in the lines is consumed. Crank the engine for 3 seconds more to
relieve any remaining pressure. Turn the ignition off and replace the fuse in the panel. Allow the engine to cool.
Step 3 Partially drain the radiator to allow you to remove the coolant hoses from the plenum. Mark all of the various
vacuum hoses and wire harness connectors and where they connect to the plenum. Disconnect all of the wires
and hoses attached to the plenum. Remove all of the linkages and disconnect the air duct from the throttle body.
Step 4 Remove the 8 bolts that attach the upper plenum to the runners. Then loosen (do not remove) the runner to base
manifold bolts on one side only. In most applications, the passenger side bolts are the easiest to access.
Step 5 Tap on the main plenum housing with a rubber hammer until it is loose. Once loose, move it to one side to allow
access to the pressure regulator top.
Step 6 Using the supplied Torx socket, loosen the stock regulator cover bolts and lift the cover straight up. Make sure
the diaphragm and spring remain in place. Keep track of the bolts and other components.
Step 7 Place the spacer washer on top of the spring and install the new cover with the vacuum fitting facing in the same
direction as the stock unit. Torque the bolts into position. We recommend using a thread locking compound on
the bolts for extra protection.
Step 8 Install the pressure adjustment screw until it just contacts the spacer washer. This will yield near stock pressure.
Step 9 Reassemble the upper plenum and runners using the new gaskets provided. Make sure you torque these bolts
into place along with the lower bolts you loosened earlier. Reinstall any components you removed previously and
refill the coolant system.
Step 10 Once everything is replaced, turn the key on and off several times, without starting the engine and verify the
pressure figure you recorded in step 1. Adjust the regulator as necessary.
Step 11 Using the stock pressure as your baseline, try increasing the pressure initially 6 pounds. You should continue to
increase the pressure 2 pounds at a time as long as you can feel an increase on upper rpm power without a
decrease in idle characteristics or low end driveability. Once you have obtained maximum performance, we
recommend you try decreasing the pressure 2 pounds at a time until you notice the performance
dropping. This should yield best overall driveability and performance.
I N S T A L L A T I O N I N S T R U C T I O N S
w w w . B B K P E R F O R M A N C E . c o m
IMPORTANT—All
Hold the phone, TPIS fuel pressure regulator has a carb eo number for their regulator. I don't work for them and it isn't very well known but I could get you that eo number if you want it. This way you can be assured that it is legal.
Dude i just read this and the EO number for my fuel pressure regulator would be great!! Better safe than sorry right?
I am quoting this straight from TPIS. If there is any questions, consult with TPIS, I don't work for them, I just buy all my stuff from them.
"Our Adjustable Fuel Pressure Regulator is California Air Resources Board approved, EO #235. There is a competitor of ours that does not understand the effects of fuel pressure. If it were harmful to raise the pressure, that is clog the catalytic converter or raise emission, we would not have been granted an EO number."
There, I'm done. I hope this helps. I believe that most of their products have an EO number but I don't give a flying foo foo about that, I'm in IL. I buy their stuff because of the quality and the customer service that is better than everywhere else I've been to.
My bad, I got the info right out of the TPIS insider hints book. Glad that I could help but remember also that it doesn't come with any kind of EO sticker, I ordered one, I would know, but you could take a copy of the receipt and a copy of that link and you should be good.
Mods so far: MSD Cap and rotor, MSD ignition coil, Accel 8.8mm ignition wires, Hooker Super Comp Shortie Headers, Flowmaster 3in catback, underdrive crank pulley, BBK AFPR, custom cold air intake, NOS wet 125 shot, air foil and a lead foot! no E/T's yet. ...TURBO COMING SOON...Other mods include keyless entry and remote start, and Sequential Turn Signals. South Carolina ---> www.scfbaonline.com
My bad, I got the info right out of the TPIS insider hints book. Glad that I could help but remember also that it doesn't come with any kind of EO sticker, I ordered one, I would know, but you could take a copy of the receipt and a copy of that link and you should be good.
think i will just have someone etch it into the top. lol
all4u has the right way and after i read his info and looked it up he was dead on.
if you are in california tpis has an adjustable fuel pressure regulator that is CARB approved for us here in cal. if you use the tpis you can adjust it and dont need all the other stuff because you are not trying to hide the fact it is adjustable.
i have to admit that everytime i said you cant use an adjustable fuel pressure regulator IN CALIFORNIA i was dead WRONG.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
I wanted to respond real quick on here. Tony Cogliandro, don't beat yourself up on you were wrong about the AFPR because it was a "known fact" that it was not emissions compliant. So much for "known facts" or some crap like that.
Next, I've been running the TPIS AFPR with a racetronix pump with hotwire kit for 6 months and everything is great. As a test of durability, I put in the new pump without backing off the regulator and when I first fired up the car, pressure was over 130 PSI! I quickly turned off the car and backed it down and got it to 60 PSI and kept it running till I backed it to 47 PSI. I expected to blow the regulator diaphram sky high for the brief 30 seconds the car was up to 130 PSI but all that happened was a lot of smoke and running rough, no broken regulator. My point is, that regulator takes a beating like a red headed step child.
Lastly, don't be afraid to work on the top of the engine, there isn't anything you are going to mess up. It is simple to pull off the plenum, or in my case, half the plenum. and replace the regulator and block the EGR. It's easy, don't be afraid to work on it. It's a small block chevy for pete's sake, there are literally a billion people that can help you with whatever you may mess up.
Okay so I'm back to my thread that I started ages ago. My car was running rough again so I went and took it too the chevy dealer and guess what, my fuel pressure regulator was busted!! Fantastic. Could I walk into an Kragen or autozone and just buy a new diaphragm? My question is I'm running a Holley adj and I wanna make sure it'll work. And what do you think might have popped it? It's only been like 3-4 months since I last fixed it. Input much appreciated guys.
__________________ 1989 Pontiac Firebird Formula 350. Spohn rear lower control arms, Spohn adjustable pan hard bar, MSD distributor, MSD blaster coil SLP air foil, Holley AFPR, BBK under drive pulleys, Flowmasters 3" Dual Cat back exhaust. Want to do more, but im a broke college student.
Ok, not a big deal. The holley is only like a 1 layer diaphragm and is the same as you will get at an auto parts store. It is also very thin and flexible. The one from TPIS is a two or three layer (I forget) and is flexible but thicker and stronger.
Your best option in my opinion would be to order a diaphragm from TPIS, you don't have to order the whole regulator, just the diaphragm.
As far as breaking it, I broke my stock one when I made a homeade regulator and bumped up the fuel pressure, it ripped. I only had it at 46 psi. The TPIS I've had as high as 130 psi (don't ask) and it didn't rip. TPIs makes parts that are overkill so if you F-up, you don't damage anything. I kind of like that even though you pay a bit more money.
haha 
