Here is what came up. What does it mean? haha.

 

Why are you doing little small 3rd gear pulls. Some of us are thing to help you. Your data is worthless.
Put the car in 3rd gear at 2200 rpm and slamp it WOT don't let off to 6500. Be a man. Lol
Then post it.

 

haha. Ok. The road I usually use is not long enough. It goes into limp mode almost immediately and feels like a pig, and takes too long to get there haha. I will try to do a freeway run tomorrow.

 

Sorry for the typos on iPhone.
Scan for codes too take a pic but erase them before the run.
I can tell your DC duty cycle is low already but u need a full run.
Turn traction off. Dry flat road.

 

Here is the best I could do. The car went into limp mode about half way through the pull.

 

Now do the same thing with a Maf disconnected.

But u didn't pull the codes. What are they. That's the key

 

agree with "consistent with wastegate issue". have you ever seen:

p1255 "boost pressure curve over limit exceeded"? if so. voila. wg's. recalibrate em. GL!

 

Mate, as well as the airflow seemingly low your car is doing EXACTLY what my car did on the 8 year old GIAC tune.... except you are only hitting 0.88 bar or so at WOT

1. You floor it in 3rd and at about max torque area 3500-4500 the car runs REALLY RICH.. you have a Lambda as low as 0.72 and I bet the ECU is pulling timing as well

2. Above 5500 rpm the car goes from really rich to almost lean and overboosts... exactly what mine did

The one time my car went limp I notice a coolant problem and obviously I was running out of fuel which I guess you have as well... I would bet your DC% are way up there...... I would probably not mess with this much more.... Get the car to an expert.


I have attached here my Eurodyne or Durametric log with my DC% so you can see how similar your tune and my tune were.

My understanding when I spoke to some tuners was that back in 2006, people really didnt know what they were doing or going overly aggressive for the tunes..... I mean my car was holding 1.25 bars and spiking to 1.5 bars at high revs on stock K24s, stock injectors, stock clutch, only mods were an AWE 200c exhaust and vflow intake...

3rd gear 4.pdf

At least check the WGs as well and then if no idea get it looked at

 

I should also add............ remove that OLD tune, put it back to stock and see how you go from there... then get a new tune when you see if there are any technical issues

Better spending say $1500 on a new excellent tune then worrying about this crazy old tune blowing up a $27000 engine mate

Good luck

 

if indeed its a tune issue theres no need to spend 1500$. giac retuned my car from 91/100 files to 93/105 new files for free. the shop i used at thine was a giac dealer and charged 75$ to hook up the cable and load the tune

 

i run 100 oct with race mode never a prob , my indy told me to NEVER use pump gas in race mode , never have never a prob .. good luck

 

The car is now at GMG. They are the shop that tuned it originally I will ask them to update the GIAC software.

 

GMG replaced the N75 Valve and adjusted the wastegates without any luck. P1250 is still the only code.

Any thoughts?

 

pressure test the car from the lower 2 boost hoses... to 20 psi.. hold it for 30 sec.. find the leaks... I had the same code on a clients car and it was the F hose that bursted...
its not the n75 valve nor the Wgs.. that I knew... if can be the hoses going to and from.. one is old and leaking for example... did you log it with the maf disconnected like I mentioned before?
BUt if you have a chance to put on a stock tune I would to try... just to see....

 

now the question becomes how did gmg give you the car back with presumably cleared codes and then you're able to replicate the issue straightaway? id be pissed!

what did ( or will ) THEY say!?