project89

iTrader: (1)

pin 2 isnt even a wire , its the shielding on pin 24

u only use pin 1 when u are connecting directly to the vr/hall sensor , since u are using gm hei u dont have to worrk about it as u hook to the moudle instead

if u want to hook the fp relay feed anywere hook it to the lug on the back of the alternator , not the 2 wire connector

willexoIX

Oh, ok, I got that now.

So pin 6 is where the HEI circuit I built jumpers to then, correct?

I should have all the information I need to button this up tomorrow
If I think of anything else I'll ask, Thanks!

I'll also post some pics tomorrow as well. I got the WBO2 sensor in place, routed the wires to it, and got the boost gauge and WB gauge installed in the pillar. Just have to wire them up, mount the boost sensor near the MS, run the line to both MAP's.

The AEM WB, what switch setting am I using for the MS input, P0 or P1? I gather that from the manual.

I'm thinking about mounting the MS on the side of the center console, next to the HVAC panel and head unit, tucked back where the dash is(I'll post a mock up pic). That way I can see the LEDs, and have easy access to the tuning connector.

The first pic is the hole I drilled in the case for the momentary boot switch.

project89

iTrader: (1)

yeah

i mount my ms to the heater box under the dash with 4 self tapping screws right into the plastic box this leaves it in view and easy access


i will have to dbl check the aem manual for the correct setting but u want the output to be 0-5v 10-20 afr

willexoIX

Looking in the manual I should be good to go cause I didn't touch it and stock its in P0, where it needs to be(0-5v).

willexoIX

I also have a couple busted connectors, but I have that 3100 topend and the engine wiring harness, I'll probably pull what connectors I can from that.

Spitballing here...
Can you use the cold start injector to say, add extra fuel at higher rpms?
Just an idea.

project89

iTrader: (1)

im sure u could but the way the csi works the fueling will probably be very erratic from one cyl to the next


the csi injects a bunch of fuel into a vacum, port into the manifold , each runner has a hole with a passage that feeds into that port , the fuel gets sucked out by vacum , there is no real mettering of the fuel

and under boost it prolly wouldnt work at all

willexoIX

Makes sense, I figured it wouldn't work very well being the injector is in the back, I'd assume most of the cylinders wouldn't benefit anyway.

I just woke up so I'm gonna have some coffee then get started again.

willexoIX

The brown on the HEI wiring diagram, Is this the bypass wire? It goes to pin 6. Does the 5v through the switch also go through this wire?

My dizzy connector has white(pin36?), purple/white(pin24?), black/red(ground or power?), and tan/black(pin6?). Are those correct for the HEI dizzy wiring?

If purple/white goes to pin 24, then It gets connected to just the shield wrapped around pin1 and pin2, just not to pins 1 and 2?

willexoIX

Heres some pics. Right now I am finishing up the harness in the engine bay, then in the passenger compartment(O2, grounds, and the launch switch). Then i'll install the 36lb injectors, and put everything under the hood back together.

Really just waiting on answers to the Dizzy question. Finishing everything else wiring wise right now.

Since I am this far into it, I no longer feel nervous, and it's actually pretty simple once you get past the ball of wires from the stock computer.

Anyway, progress pics!

Six_Shooter

iTrader: (2)

Yes, those are the correct colours for the HEI wiring.

willexoIX

So would the black/red be ground?

How about the 5v switch, that get wired in anywhere in the bypass(brown/black) wire?

willexoIX

Only thing left under the hood at this point is to wire the dizzy, and run the sensor wires and loom the remainder. I used alot of the stock loom that was still in good condition.

The injectors are in, however, the ring that locks the original injectors into the fuel rail doesnt fit the new injectors. Where the original injectors had a "groove" all the way around the top for the locking rings, there are only notches on sides of the new injectors, instead of all the way around. I'll post a pic in a bit of it, but I would assume thats going to cause a problem under boost isnt it?

project89

iTrader: (1)

the pin 24 connetion is to the innner wire not the shielding

i dont rember why pin 6 goes threw the ms ill have to look threw the manual again but i know on diyautotunes site they have a board mod were the ms will apply the 5 volts on pin 6

for now leave pin 6 disconected , and hook up ur 5 volt threw a swith ill find u the mods

ping g on the dizzy connector is ground
let me look into it a lol more for ya

willexoIX

I know you said pin g is ground, I have no idea which pin is g. Pin 6 iirc is the HEI circuit. I just need to know which is which on the dizzy connector. If colors match on the diagram then the only thing I need I think is what connection is made to the black/red wire on the dizzy connector.

Of course the charger port for my laptop took a dump. I'll have to resolder it when I get the car running. Only thing engine side left is dizzy and sensors. Other than that I need to finish the gauge wiring, MAP sensor tube routing, aftermarket tach install, and put it all back together.

project89

iTrader: (1)

here ya go



lol muct be a dell laptop , i have a closet full of those that i buy for 5-20 bucks each and i resolder a new jack or just replace the boards in for around 25 bucks

willexoIX

Yup, I got it for free, this is the second motherboard, the first was beyond repair. Hoping this one just needs resoldering. Thanks for the diagram, letters are color coded correctly on that? If so then G would be the black/red stripe that gets grounded yes?

Did you see my post on the injector lock rings not fitting the new injectors?

project89

iTrader: (1)

yeah thats correct.

u should still be able to get the lock rings on , if not no big deal as the fuel rail bolts down so the injectors cant pop out

the 60* v6 is one of the few motors that actually uses injector retaining tabs no big deal if u cant get them on

willexoIX

Actually if I pull on the injectors while everything is bolted down they pop out of the manifold, which leads me to believe they will pop out under boost. The other thing I can do is clip the original retainer rings so that they fit in at least one side of the groove in the injector and rail. But I don't really want to cut them cause I don't have extras

project89

iTrader: (1)

are they shorter then the stock ones? were did u get them from

willexoIX

TBH I didn't even put them side by side. I got them from southbay, told them I was doing a turboed 2.8 89 camaro and needed 36lb injectors. The ones I got look almost exactly like the ones in the last post on page one of this thread.

willexoIX

As a matter of fact that's exactly the ones I got, just through southbay. If you look at the close up you can see what I mean about the groove at the top not going all the way around.

I mean, the orings are in about the same spot in the rail and manifold as the others when bolted down.

project89

iTrader: (1)

do they pull completly out of the manifold when u pull on them?
i belive that style is shorter then stock ones , ask fasteddi if he used the same injectors if he did i wouldnt worry about it , ive never used that style injector in my car so i dont know

if by chance they sent u the wrong injectors and u have to send them back get urself a set of 42# injectors , 36's are kind of small even for a 2.8 , they will work fine if u leave boost low but as anyhone who has gone turbo will tell u boost is very adictive , and im sure it wont stay low for long

willexoIX

I will have to check tomorrow. If I can get half a retainer on each one it shouldn't matter cause they will be locked to the rail for now. Hypothetically the 36s should be good to 400hp correct? If so I think I will be fine with the 36s till I go to a bigger turbo. This is my DD so I'm not going all out on it.

project89

iTrader: (1)

not quite to 400 but if u dont crank up the boost to much they will be ok

i keep forgetting ur putting this on a bone stock engine , if u had a cam and ported heads u would outgrow them pretty darn fast

willexoIX

How much boost do you think I could get away with before leaning out the 36s? Just to get an upper threshold number that I know not to exceed.

project89

iTrader: (1)

on that bone stock engine it will take 20+ psi to make 300 wheel hp, depending what turbo ur using , if u use a gt3582 it would take around 16 psi to max them

i belive ur using a large t3 right ? the biggest t3 is only good to around 2 250-270 hp

willexoIX

Pin 6 is the spr4 wire, which was a spare pin until I installed the HEI circuit. The HEI circuit pulls 5v from the proto area so wouldn't that be my 5volts to let MS control the timing?

project89

iTrader: (1)

im not sure as they have made changes to the wiring , i did mine the old way , im running out to pick up my new cyl heads ill look at the manual and wiring diagrams when i get back

project89

iTrader: (1)

ok im sitting at work waiting on fedex i had a few minutes to look in the manual

project89

iTrader: (1)

ok pin b is the bypass so why the hell do they have it running back to pin 6

leave it disconected for the moment but run it out to the distributor and when u get the engine fired and running see if it has 5 volts on it


The 'Ref' signal from the module to the Megasquirt gives rpm and engine position information.
The 'Est' signal from Megasquirt to the module controls the advance when running.
The 'Bypass' signal from Megasquirt to the module allows the module to benefically control its own advance during cranking


if the changes they have made do infact supp[ly 5volts on that wire im going to go back and change my installs to use the new wiring


this is how diyautotune does it


its the relay board instead of the connector but the pins go stright threw just as if u were using the db37 off the ms
they hook that pin right to vref 5v , and just command timing will cranking

willexoIX

So just connect it to the 5v ref line without the switch? And is the 5v the blue wire on the tps or the grey? I matched the colors and connected the 5v to the grey wire on the to a and the Sig wire to the blue on the tps. Do I need to switch them?

project89

iTrader: (1)

run pin 6 out to the distributor and dont connect it once the motor is running we will see if it has 5 volts on it , if it does u can connect it , if it doesnt u can run that wire from the vref direct or with a switch i would prefer to see a switch as if u get bad gas or have issues u can flip the switch and the distributor will revert to base timing


yes u have them backwards grey tps wire is signal , blue is 5v ref , black is ground or atleast it should be

if ur tps has the flat plug middle wire should be the signal wire back to the ecm , not sure what pin it is on the round tps connector

willexoIX

I also ordered another processor just in case. The only wires left are MS pin 6, the bypass wire, and the sensor grounds. Then the grounds, o2 sensor wire, launch switch, map tubing and button everything up.

I ordered the processor in case I did fry it putting it in backwards.

willexoIX

My tps is the flat plug with round ends, so switch the wires around.

project89

iTrader: (1)

u can leave them as is just incase i am wrong , when u turn the key on u can look at the tuning software and see if the tps reads correctly if not u have to flip the wires around

ok i need to know a few things

bone stock engine right ?
r u at sea level?
what is ur base timing set at
36# injectors


i have to run the wife to work in 10 minutes but when i get back ill whip up a base tune


also i ground all my sensors to the engine block and then ground the ms wires to a very good ground in the car , make sure u have a good battery to engine ground and good engine to firewall or body ground


u should be able to fire this thing up tonight

edit thats right ur laptop is down , can u get that fixed ?

willexoIX

Bone stock, 86ft above sea level, 36lb, base timing is stock 10° btdc.

I can fix the laptop, maybe not until tomorrow though. That's how I'm doing the grounds too. There are 2 ground straps from engine to firewall, and a couple grounds from battery to chassis and engine.

I may be able to use my dad's laptop but it has win 7 on it, so I will probably fix mine first being I have win xp.

willexoIX

Only things I have done to the motor are small. Bigger intake, stock timing set, ported tb, polished and port matched the upper and lower intake manifold. Nothing really internal is done to it though so I think you can call it stock.

project89

iTrader: (1)

base tune comming up in 15 minutes

project89

iTrader: (1)

ok here is a base tune , it will probably run a bit rich , once u tell me how rich i can quickly fix it

other things to note

o2 feedback and fuel trims are disabled o2 is for datalogging only , will be changed later

launch control is active from 2300 soft limit to 2500 hard limit , the hard limit is were it starts dropping spark, this will have to be adjusted when u let me know how high u can stall ur converter when footbraking the car


i am using rpm based acceleration instead of tps or map based , this can be changed later, car may not be driveable until theese are tweaked ( may stall or die or load up with fuel on throttle opening

anyways iull need u to datalog and send me back some data logs so i can tweak stuff

in megatune start a new project file and edit the settings so they are ms1 extra code and wideband o2 , u want psi in the gauges and farenhieght for temps


heres the file

williebase.msq is the majority of the tune, then u will have to goto the ve table 1 tab and import willieve.vex , and then to spark table 1 tab and import williespark.vex

project89

iTrader: (1)

lol soon as i got done with that my new heads showed up man theese things are nice

project89

iTrader: (1)

willexoIX

Nice heads, lol. I finished up the engine side and the gauge side wiring. All that's left is the MAP tubing and the MSgrounds. And on that note, I am done until tomorrow. Project, thank you for your continued help and as soon as it's running, I will shoot the first datalog your way.

To be continued....

project89

iTrader: (1)

when ur ready the base tune is 2 posts above

project89

iTrader: (1)

well did the engine fire yet ?

willexoIX

Not yet, I just got back home from my girlfriend's house. I'm going to work on fixing my laptop charger port tonight, then I'm gonna hook up those grounds, the launch switch, then the MAP tubing and provided the cpu isn't fried I should have a datalog for you tomorrow. Even if it is fried the new one should be here tomorrow anyway.

I'll keep you updated.

willexoIX

Well it wasn't the charging port, it's the adaptor. Luckily my dad's Toshiba charger works until I get the new adaptor. I'm going to get started on the car and I will let you know when it's running.

What kind of datalog do you want? Idling or normal driving if it doesn't stall?

project89

iTrader: (1)

just datalog it from the start if it idles and u think u can drive it , a real light throttle trip around the block will help narrow down the base a lil better

we just want to make sure its not super rich , or super lean , or any other condition that could cause engine damage

willexoIX

well i connected everything, turned key to run, not start to power the ms. fuel pump primed, top 2 leds on solid. Ran a portcheck, came up ms1 extra on com1, went into megatune and no response. went back to portcheck and it couldnt find it. So i am assuming it is fried after all.

Looks like I'm going to have to wait for the mail, the processor is out for delivery today.

Ok, open megatune, which am I clicking on iin the list? I started a new file called camaro, would I open that one? then load the williebase.msq, then import ve and spark table correct? all while the key is in run.

once everything is loaded then burn to controller, correct?

project89

iTrader: (1)

when u get the new cpu unplug the coil both conectors , u have to load the ms extra code on the new cpu , when u flash the code there is nothing on the cpu for a few seconds and the megasquirt could trip the coil and burn it out


did u open the configurator and make a new project?
if so u have to go change a few settings , mainly the code version and wideband settings to match what ur running

once u get connected and load each file , it should actually ask u if u want to burn to controller after each one click yes and then u should be ready to fire te engine


chances are the car will run with the tune that comes on the cpu once u flash the extra code
the tune loaded in the extra code is for a small block chevy with tpi and hei , my 2.8 actually started and ran on that tune , the only difference in the tune is the number of injectors and the number of cyls, the only thing wacky about it was the tach will read off because it expects 8 pulses per complete engine rotation instead of 6

project89

iTrader: (1)

btw if u did fry the cpu be glad it was only an ms1 , the ms2 cpu now sells for 111$'s

when i thought my ms2 cpu was bad i downgraded to the ms1 , turns out my ms2 cpu is just fine though , im going to have to put it back in so i can run the megashift trans controller for the 4l80 trans