the truck runs and drives as it is. i just dont get much time to tune.

i have ran into some obsticles with the p12 pcm. max injector is 63.5, no 2 bar support from hptuners.

im hoping with in the coming weeks that it is ready to go. if i can get the tuning ironed out im hoping for about 400 or so to the ground. it seems like it will take more then 12 lbs especially on e85.

 

ya there was a guy in the rio grande valley that ran a 12.21 on a 100 shot and some sticky tires

 

I have the same injector limitation...I just divided all the IFR values by 2 and set the ECT multiplier to 2 to get the value back. Its cheating, but it works As long as you use a 2 bar MAP sensor, not necessarily a 2 bar OS, you should be fine. The tune just needs an accurate pressure reference for the IFR table.

 

ya doesnt look to be to hard to fake it. i already have to 2 bar sensor just have to build the file. i got the injectors working by specifying around a 60 lb and changing stoich(had to do any way for e85) its a learning process for me. this is the first fi tuning i have done. well i help tune a civic years ago with a apex safc but that is nothing like this lol

 

Right on. Well if you need any help, let me know. I've tuned a few boosted vehicles, including my own which sees constant attention lol. I'd get those injector settings changed and set the stoich back to a value that you intend on running. I assume its not a flex fuel truck, since you had to change the stoich anyway. Messing with the AFR values gets amplified in the open loop table, and that could cause problems over time.

 

sweet thanks for the help.

 

Here's a little teaser vid at 6 psi

Turbo Colorado 6 psi - YouTube

 

Thats awesome. What have you done with the transmission to take the extra abuse?

 

Billet servos. Both intermediate and 4th apply. We will see how long it last lol

 

Damn lol. You've got me looking now... Friend of mine is looking to sell her 05 RCSB 4wd Colorado with the 5 cylinder. Little snail in a little truck like that could move out.