good afternoon. Just started the turbo ss for a bit today...maiden voyage out of the garage....Everything went well.....except for the fact that the car runs like ****!

heres the specs.

2001 camaro ss
Single turbo
96lb hi impedence injectors
218/218 114 cam

i set the injector tables using the calculator that someone offered on this site.

I lowered the minimum injector pulsewidth down to 1.079

i also took away some of the startup enrichment. its down to .038 across the board


The car will do the following. Start up..run rough...occasionally backfire...ocaasionally toss the blinking missfire SES light...wideband guage says 19:1 - full lean (20+:1)at idle. While driving the car..its super down on power...just trying to accelerate out of my driveway itll backfire want to stall out.


I didnt get any logs because my laptop decided to take a nap and not wakeup.




Anyone have some things i can look at? especially with anything i may have overlooked with setting up the injectors. I looked around quite a bit to make i didnt miss anything...i havent touched anything else other than the above mentioned, and boosted the idle up.

 

Who makes a 96lb High Imp injector? Are you sure they are High Imp?

 

venom...yea i even checked em with an ohm meter and called the company to verify.


they ohm out at 12 ohms.

 

A 96lb. high imp. injector? Where did you get them from? Definately sounds like a fueling issue.

 

you are too lean. your A/F needs to be in the 12:1 range

 

thanks...but this is at idle...usually i see idle around 16:1





its def a fueling issue...i havent changed any other parameters...im wondering if i should bump fuel pressure up a tad and see what its at.

 

just scanned on HP tuners...cyl 6 has a high missfire count....possibly the cause of the exhaust backfires and shitty running.


the car still runs lean as hell...i used bi directional controls to add some fuel and it seems to be idling 10x better.

 

King, this sounds like an issue with ignition perhaps, are you using any spark leading or have a log of the dwell times?

 

i havent really touched any of the spark tables or messed with dwell...its basically a stock 01 m6 file with the injector tables, cold start enrichment, idle, and minimum pulsewidth changed.


im gonna check cyl 6 and see what the deal is....i have a custom set of plug wires in there too.

anything you would suggest to look at ignition wise other than a broken plug, fugged up gap, or bad crimp on teh wire.

 

Aside from the things you've mentioned it sounds like you've got it pretty much. My only guess as far as the ignition goes would be to try and switch out the #6 plug with a colder stage or something else and see how it works for you, hell it may just be dirty or gapped too large.

Other than that, you're guess is as good as mine bro. Good luck.

 

thanks...ill keep everyone posted on what happens.

I Built this entire setup...turbo headers..4 inch DP..radiator setup, cold side pipes..everything so its a little frustrating to say the least.

 

What bar (psi) are those 96 lb injectors rated at?

 

thats anothe problem...i tried to contact venom but noone responded...i put it at the normal 43.5...but im going to try and call them on monday.

 

I guess injectors are usually rates at 43.5 PSI, could it be possible they you have 98lb injectors when at 57PSI? if so, this could be where it going lean. Also I have heard that larger injectors take longer to open. For example you have a 48lb injector commanded to open for 0.1ms (just an example) to get the same amount of fuel from a 96lb injector do you command it to open for 0.05ms?, I would say not, if it takes longer to respond. You may want to play with the minimum pulse width table.

 

i just spoke to venom..they rate at 40 psi.

i also run 45 psi fuel pressure.


the dude at venom told me to plug in 92 lb hr

 

^Any updates?

 

little embarassed....coil pack wires cross from when i relocated the coil packs.


just drove the car...few little quirks..but nothing serious...tomorow is fix and tune day.