sunbird is under new managment..

[v6h.o.]

Holley Commander 950 Engine Managment :P

went with the Commander as it was affordable, it works with all GM sensors, and Delco ECM connector ends. just repinned the stock connector ends.

for the last week ive had the engine running on the new ECU,
the change in engine and opperating charachteristics is awesome. the engine feels so much smoother. revs up and responds to throttle much better.




now with the full programable ECU i was able to utilize my 22# per hour LT1 camaro Injectors that have been sitting around collecting dust for almost a year.
the stock 16# per hours had to go.










got it half assed mounted. still have to clean up and rewrap all the harness wiring still and make a good mounting bracket setup for it.





the old Delco:



went out on the weekend doing some tuning to fix the few spots where it was leaning out. played with the accleration enrichment numbers some more again too.

still more fine tuning to do...

we'll have to see what changes this made when i get it to the track in early sept.

[RacerX11]

Nice work Colin! Welcome to the world of fully programmable engine management! You should be able to pick up some considerable power over your stock chipped ECU.

What kind of timing map are you using? How are you optimizing the timing curve?

I can't wait to see the results.

Marty

[SappySE107]

If you need the stock spark timing, I have that somewhere already in a picture with the numbers. For the fuel tables, does it use load, ve, or pulse width? I assume it uses some sort of adjusting like the GM computer to help you tune the tables once they are close.

The stock computer is actually more programmable but its not nearly as friendly for using it:P

[RacerX11]

Yeah, I know..I should have said "real time programmable". But I am working on a trick for the GM computers to allow this much more easily. I just need some more time to finish it.

can you share the stock timing curve? I need a baseline map to get my car started.

Colin, are you ever going to get that thing to a dyno?

Marty

[dykz34]

If you don't mind me asking, how much did that setup cost?

[v6h.o.]

the first issue we ran into with the holley was that i didnt input the proper Ignition Refrence Timing number for crank degree's for spark... so it ran like complete ass. basically puking out fuel out the tailpipe.

this was also going with trying to use a 4.3L v6 19lb injector Base Map.

the one thing with the Holley, as much as its for 4, 6, and 8cyls... the basemaps that come with the software are 99.9% V8 chev/mopar/ford engines of all walks of life.

so before i figured out the ign refrence issue, i then tryed a stock 302 Ford Base Map.

started running better. but nothing great.
after i asked Curtis what his Ign refrence was on his Haltech. and i put in that number... well things looked up. started pulling the fuel (i had to dump in to keep it idling) and pulling back IAC position down to a normal level.

so right now im running on a modified 302 Base Map. LOL.


the IGN timing.. well i havnt played with it just yet. its still the 302 Spark Map thats in there and running off of.
right now im running a max of 34 degree's

the ecu also uses and includes a Idle Spark Control to modify spark to help idle speed.

the Fuel Maps:

Startup Enrichment
PWM for cranking and Afterstart Enrichment values for startup with 16 different Variables for 16 different temp ranges.

Main Fuel Map
16x16 resolution
has a O2 Compensation Bar graph to let you know what the O2 is commanding to compensate. if its stoich/rich or lean.

Acceleration Enrichment:
(TPS BASEDD ACCEL Enrichment Tables)
Pulse Width -Rate of change of TPS (msec)
AE Correction vs. Coolant Temp (%)
AE Correction Vs. TPS (%)

(Accel Enrichment Based on MAP changes)
Rate of change of MAP sensor (fuel units)
Enrichment Decay Rate vs. Coolant Temp (crank triggers)
AE of MAP vs Coolant temp (%)

then there is the Modifiers tables:
Air Temp Enrichment (%)
Coolant Temp Enrich (%)
Additional Timing vs. Coolant Temp (deg)

there is SOOO much more i could go on about.. the CLosed loop parameters settings, the Hardware settings, DataLogger, how its writen up so that even a guy thats never played with EFI can ditch his carb and get his SBC running in a day. ect ect ect..

Dyno... hopefully sometime soon. i'd like to see what this engine puts down. maybe next month sometime Marty.


Cost: Just the ECU on its own (no software) retails for about $550 US$ from summit racing. this is for the regular non wideband ECU. the Wideband unit (like what 614Streets has is a bit more $)

i got mine for a sweet deal. paid for mine with a whole bunch of labour for a guy's engine project.


yeah if you want to send me the stock spark maping that'd be cool Ben.

im really happy with the setup. i think its a great setup for those on a budget.
i'll likely be sending Holley my base map for them to use so that they have something for the 660 in there. :P

[SappySE107]

I just thought of something that would be much easier. I believe www.gmpcm.com has a demo version which has the A1 code in it. You can load up the bin file off this site and see everything you could possibly want to in the code to program your aftermarket computer.

Does the software require the ECM to run? If not, i wouldn't mind taking a look at it, and I might be able to setup a stock 60V6 program as a starting point. Problem is the injector size and the units used for fuel (VE, pulse width, something else?).

I can't find the picture I did and paint isnt installed and I dont know where XP is. That and I dont have much space on this HD to install another program to do this. Hopefully GMPCM will work.

[XLR8ING]

Very nice Colin!
Get it dialed, and see what the dyno or track says. I'm sure we're all curious.

[dykz34]

Theoretically speaking--could you get a 2bar map and run boost with it?

[v6h.o.]

Theoretically speaking--could you get a 2bar map and run boost with it?

sure you could. but why would you want to do that when you could get a 3 bar map and run MORE boost with it

it supports 1,2, and 3 bar

[614streets]

Hey collin did you get the pro version? If you did you have even more to look forward to with a future upgrade to full closed loop with wideband , you know that.

[dykz34]

Theoretically speaking--could you get a 2bar map and run boost with it?

sure you could. but why would you want to do that when you could get a 3 bar map and run MORE boost with it

it supports 1,2, and 3 bar

Well, I was just using that as an example. Plus, up to 14.7psi is nothing to scoff at.

[v6h.o.]

Hey collin did you get the pro version? If you did you have even more to look forward to with a future upgrade to full closed loop with wideband , you know that.

no, i just got the regular version. i was going to upgrade it to the PRO version over the winter when i had more time and some $ to upgrade it.

Dykz34, wasnt scoffing, just making an example that you could run a 3 bar with this.. :P

[dykz34]

Dykz34, wasnt scoffing, just making an example that you could run a 3 bar with this.. :P

Is their interface available for free d/l? I'd like to check it out.

[EspanolaGuitarista]

Can I run this setup on my Beretta? Would C.A.R.B. fine me? I live in california.