im new at this so here it gos i have a 89 formula 350 i am going to have a 10.5:1 383 with a mild mild cam and fast burn heads i am on a budget and was thinking of an hsr how much money am i looking at spending? and how much of a head ache would i be getting in to? will the factory wire harnos work?

 

HSR's are expensive! if youre just getting the intake and the fuel rails, it isnt that much, but the whole set up is alot! im looking at a complete set with intake, fuel pump, fuel rails, injectors, wiring harness, and some other parts as well. its like $2499.99 or so on summit racing. i would definately check out their website. searching for just the right part is easy! plus they are going to have the best prices. as far as performance goes, the HSR does up the power quite a bit but i heard the manifold ports dont quite match up to the heads. read this... http://www.summitracing.com/expertad...E828C9FFCCE%7d

 

is there an alternative efi intake thats not as expensive? has anyone tried edelbrock or bbk?

 

im fairly sure that you do not really need to buy the whole kit. you can easily get by with just the intake and rails. i think that you can use the stock computer and just get a tune that will work with the added air that is being used. and you can reuse your stock throttle body too.

 

you'l need intake, fuel rails, make your own An fuel lines, a new tune, and a few misc pieces, read this all the info you need

https://www.thirdgen.org/forums/alte...ealth-ram.html

 

$550
http://www.summitracing.com/parts/WND-7540/
http://www.summitracing.com/parts/HLY-534-186/

For the fastburn heads you would need the Vortec version of the HSR I believe
http://www.summitracing.com/parts/WN...&view=1&N=700+
See
https://www.thirdgen.org/forums/post...72-post20.html

Don't hold your breath!!! Been waiting since '04
https://www.thirdgen.org/forums/tpi/...ake-setup.html

 

I have a HSR with a 58mm TB, custom -6 fuel rails and 42lb greentop injectors for $800.

 

ok it looks like you guys found something for way less than i thought! i will have to check into that. but would you really get the full bang if you just buy the intake, rails and injectors? what about everything else that comes in the kit? the kit comes with throttle body, fuel rails, injectors, ECM, wiring harness, O2 sensor, fuel pump, fuel pressure regulator, MAP sensor, IAT sensor, TPS sensor, IAC motor and the software to calibrate it all! i think it only makes sense to have each part working harmoniously. besides, you would more than likely need to upgrade all that eventually. stock fuel pump and regulator with 42lbs injectors??? doesnt seem too wise. oh and also check out the TPIS mini ram. i havent looked at that in quite some so im not too sure how much they are but they were pretty reasonable when i checked em out.

 

Have you thought about/looked into the FIRST injection system? Thats the one I'm leaning towards. It's like TPI on steroids, a little higher RPM ceiling ~5500 to 6000 from what I hear but don't quote me.

 

thanks for the info that helps me out alot

 

There is no such thing as upgrading your sensors. The ones from the factory are the same ones used in 1000hp street cars. The only exception is the MAP sensor, which is only changed if hes boosting the car. If hes staying NA, his stock 1bar is perfectly fine.

Stock fuel pump and 42lb injectors not being wise? *Shakes head* Your fuel pump is more directly related to how much horsepower your engine makes. Not injector size. A stock 350 will run just fine with 42's. You just need to tune the ECU for it. Which lets face it, he needs a tune anyways.

The TPIS miniram was really absurdly price when I checked. Wasnt it $1200 or something stupid with no parts?

 

If you have a TPI car you already have all that ; why would you want to spend extra for parts you already have.
The " kit " is intended for someone retro fitting a HSR into a car that didn't originally have EFI
Wealth of HSR tuning info here on 3RD Gen DIY Prom or get a custom chip for $200

Define reasonable?
The $700 difference in price between a HSR and MiniRam intake (both w/ fuel rails and reg ) would pay for your new injectors , required fuel line /plumbing changes and a new tune with change left.

MR Intake $900
http://www.tpis.com/index.php?module...niRam+Manifold
MR Fuel rail kit $355
http://www.tpis.com/index.php?module...Fuel+Rail+Kits

 

[quote=vwdave;4421736]There is no such thing as upgrading your sensors. The ones from the factory are the same ones used in 1000hp street cars. The only exception is the MAP sensor, which is only changed if hes boosting the car. If hes staying NA, his stock 1bar is perfectly fine.

Stock fuel pump and 42lb injectors not being wise? *Shakes head* Your fuel pump is more directly related to how much horsepower your engine makes. Not injector size. A stock 350 will run just fine with 42's.quote]

No such thing eh? Ever heard of wide band O2 sensors??? Heres a quote,
"This sensor eliminates the lean-rich cycling inherent in narrow-band sensors, allowing the control unit to adjust the fuel delivery and ignition timing of the engine much more rapidly. In the automotive industry this sensor is also called a UEGO (for Universal Exhaust Gas Oxygen) sensor. UEGO sensors are also commonly used in aftermarket dyno tuning and high-performance driver air-fuel display equipment."

Also, 42 lb injectors on a 350hp motor? heres a formula,

Fuel requirement in lbs./hr = (Max HP x BSFC or brake-specific fuel consumption
) / (number of injectors x

duty cycle)
you said yourself the fuel pump is more directly related to how much hp you have. 42lb injectors are overkill for a motor with 350 - 400 hp.
Its like I said, Its all gotta work harmoniously.

 

They will work just fine on a 350hp motor. I have them on my 358" motor pushing 400hp. The duty cycle is at 50% at WOT and is slightly large, but they are just fine. Let me rephrase as what I meant was not phrased well. You can run a larger injector on a stock pump with no issue. Whether or not you have 30's on his 383 or 58's isnt going to make a huge difference if the pump can keep up. The pump has to keep up with motor, the injectors have to keep up with the motor, not each other.

And as for the wideband, its not required. He can purchase a LM1 from innovative and use that with no big deal. I would presume that hes going to pay someone to tune the car for him, and most tuners will have their own LM1 to install into the exhaust and cap off when finished.

 

Most of us that do own a WB O2 sensor only use it to set the tune up correctly and then remove it and run the NB