Rogue_Ant

So the graph you posted is the reading from your in-car WBO2?
Also, have you verified the TPS is operating correctly?


-Rogue

95ONE

brand new Fuel filter. 044 Pmp also new.

Knock sensor is old, but I don't see how it could affect afr. Just timing.

95ONE

Sure. Have one,(SMT) but as John @ vitesse says. If I have to change it more than 5% then somethings wrong. at it clearly is if the MAF translator is doing its job fine until 3750 and then it goes south. There is clearly an underlying problem.

Since I installe the GT30R. I haven't used anything above 3psi because I knew the tune would be off. But it wa WAY off. So I haven't had the chance to go any higher until this is solved. (4 months of this now)

Generic Precision 3.5' Core. 650hp rated (Kinda funny to me how they rate them) intercooler.

95ONE

Yes. Defintely. Like I said. Probelm has been here BEFORE I bought Vitesse software! NO basing his product at all. I'm bashing my car for giving me problems. possibly myself for not being able t fix this!

but

MAF is brand new original product (not chineese)
TPS is brand new.
Injectors flowed and tested.
Pump has 20 miles on it and ran the car when It wen 123mph in quarter.

FAULTY ground. very possible and having a hell of a time looking for it. I don't think there is a wire I haven't checked for continuity or ohmed out less than three times in that harness.

Fuel pressure solid. Gauge inside car and on FPR. But. Will try another/better hose to Fuel pressure regulator. Sounds viable.

95ONE

I can't tell you how many times I keep coming back to that. (Checked a million times.) checked for an old sneaky problem of the injector clips where the prongs on the inside become too loose (opening too large for injector pin) and cause intermittent fueling. Not it.

I've replaced all clips and cut wires back to healthy area and wired in new clips. Continuity and Ohmed. Verified haness using all methods. Idles great. runs great. would screw up in just one spot if this was the problem though. have always had resistors and worked perfectly on other set up. Even changed those out just in case.

95ONE

At this point. I will sell it to you for about $1 for every hour I've spent on it. parts are free. sooooo. one Miiiiilllllllllllllllllllllllllllllllllllllllllion dollars. !

I'm a little stubborn. I'm not going tostop until I figure this out.
beleive it or not. I appreciate a parachute option like yours. but not this time.
thanks anyway~!

Oh yeah, I sent you an e-mail for those parts. A day late. But I still want them!

95ONE

Mine and the one the Dyno has. both verified the same. I did four runs and they were all exactly the same.



THANKS GUYS. I've been working so hard for a while now to find this gremlin. I've covered so much ground in my investigation that I know there's not much left. I really am just looking for pitty at this point. It's pathetic, but it makes me feel better. It helps me step back, and gain energy later to try and fix it.

I'm completely re-wirig the Fuel side of things on the harness now. It checked out fine, but what the hell. I'll try the hose Sunday. I'll let ya know.

marky522

If you are looking for a bad connection you need to check for voltage drop, ohming it out checks open circuit resistance, doesnt tell you how the circuit is when amperage is applied.

Mark

95ONE

the trick would be to do it on stuff while acclerating past 3750. Then to know which wires to check. too difficult.

Geneqco

If it's a pattern... works for five minutes etc could it be your injector driver is getting too hot and playing up? Just a thought.

zoltan944

Im still confused on this whole thing.
Can you explain what you did at the dyno? When did you let off the gas?
Looking at the graph you posted you hit 3psi at 3k rpm and everything kinda goes flat. Obviously when you let off the throttle it should go really lean, so it makes it unclear when you let of the gas on the dyno. WHAT A/F did you see when you decided to take your foot off?

zoltan944

also what is your wastegate spring rating? (the lowest boost setting) also what kind of wastegate do you have?

AlexE

Option 1. Uhmm since you seem to be enjoying throwing money at the problem. I think you can get a new/aftermarket harness for around 6-7 hundred.....

Option 2. Sell all those parts you bought and pick yourself up a new stand alone and call it a day.

Rogue_Ant

Got a link?


-Rogue

95ONE

My last guesses are

1. Something wrong with all or one of the injectrs somehow
2. injector driver is going bad for some reason.
3. could be the resistors screwing up the drivers.