I just installed some Accel 35lb/hr injectors, a fuel pressure gauge and an Areomotive FPR (direct replacement for the ecotec)
I installed everything in preparation of my turbo, which will be finished and installed later this month
I got the car running... idle AFR is between 14.5-15.0.
Cruising AFR is around 13.5-14.0
But the problem I am having is this:
When the car is WOT from a stop is goes to 10.0 - (Note I have turned off PE to try and lower the AFR)
If I floor it during the powerband the AFR is fine again 13.5-14.5, but when I shift into the next gear it drops to 10.0
What am I doing wrong? I don’t want to wash the cylinders with that much fuel- so I have been keeping my foot out of it.
Did I not disable PE correctly?
I'm new to HPT, and I’m still tying to figure it out.
Any help would be greatly appreciated.
Shifted wrote:Well before asking if you did it correctly, mind telling us how you did it?
might as well post your stock and modified files too..
P&P Tuning
420.5whp / 359.8wtq
Injector constant: .12205 - Between adjusting the injector constant and my FPR this gave me my best idle afr:
Fuel Presssure at engine prime is 70lbs while running is 65lbs.
Here are some screen shots:
PE Tables:
General Fuel:
ECT vs Startup:
Fuel Cut:
Your fuel pressure is WAY too high, thats 90% of your problem. The other is that if you set your PE enable to 6000 RPM, your PE tables mean nothing. Set your PE multiplier back to 1.0 across the board (even though PE is off), and then get to work on your VE table. I don't know why you want to turn your PE off, the last thing you want to do is try to tune performance at WOT on the VE tables.
Edited 1 time(s). Last edited Tuesday, March 13, 2007 7:02 PM
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Everything that ROn said. You want PE to take care of your WOT fueling. You shouldn't have needed to mess with the VE tables at all with just an injector change.
Your fuel pressure should be MUCH lower than that. Try getting it in and around 45 psi at idle and 55 psi at 0 vaccum... then tuning the injector constant for a clean idle. Put everything back, and set your PE to a proper RPM. Then drive around and see how the car reacts. It should be almost stock.
Just so you know, I've used this method to run 38lb injectors on a LN2, 38lb injectors on a LD9, and 98 lb injectors on an LD9. All you need to mess with is the injector constant if you're keeping it n/a.
-Chris-
-Sweetness-
-Turbocharged-
Slowly but surely may some day win this race...
I'll try it and let you know.
just follow the shifted sticky in the tuning forum.. thats what I did
I don't know why you're messing with these other tables and turning off your PE.. PE is where you want to tune. You're all motor. there's no reason to mess with low speed and idle settings.
when you tune PE is the only real tuning you want to do for now.
when you put the car back into normal running mode, the STFT and LTFT will take care of idle and cruising.
