Today i took a friend for a ride to see if he could locate a noise (he said it sounded like a normal vacuuum sound and that im just a paranoid ****er). So he wanted to see how the car felt with the new exhaust/tune. I boost for him and it cut out in 4th like the TC is on. I check and it's off. So i boost again all is well. We get on another road and i boost it again and really watch the tach to make sure im not hitting the limter. At 5500 RPM's the car cuts like the TC is on again, but i verify that it isn't. My bud was watching the wideband and said it was at 11.8 so i don't think its lack of fuel.? Does anyone have any ideas what this might be or where to start looking?

 

A/F lean ?

 

I dont think 11.8 is too lean...is it?

 

what if your gauge is incorrect? Also, do you have sufficient air flow? I have heard of similar problems when the system is starved for air flow but still showing correct numbers. Air or Fuel....

Do you have a modified fuel system?

 

I think if you give the guys a little more info , it might help . What FI do you have ? How much boost ? Fuel System...stuff like that

 

With the Utec its definitely not the MAF going over voltage. I would start looking for a leaky pipe.

 

Sorry guys i was at a friends posting this. I have a TN kit with a Tenabe exhaust, 5/16th spacer, AAM fuel return, UTEC, and a tune by Sharif.

 

time to test for leaks

 

lol at the revival.. it has been 3yrs now and I hope he found his problem.. I'm curious what was his PSI, he might be over boosting and he's hitting his Utec overboost cutoff.. back then (2006) TN had major problem with overboosting.

 

lol...how newb...i didn't even look at the year just month and day, it came up in a search, im about to get tuned, so i been reading up on boost leaks so i can make sure i don't have one before going to get tuned...i wonder what the deal was

 

my buddys boosted 240sx was doing the same thing ....ended up just being a leak in the intercooler piping....

 

No you don't....you have a Greddy twin with FCON tuned by me.

Damn this thread is OLD.

 

Holy fawking hell this is old... I haven't seen that Z in 4 years

 

nice i guess he solved his problem with a nice nice upgrade

 

LOL pretty old. I don't even remember this problem. I am sure it was solved when the car was hydrolocked and totaled.

Hah
So was this old baller setup. That was a much longer drive to Charlette

 

ROFL!

 

DAMN, i was wondering what the hell was wrong. hahaha at 2006

 

It's the remix!
How's Maryland?

 

In the worlds of Smokey... "Why you always bringin' up ole shiit?"

 

does anyone know what the problem was....my car seems like it falls on it's face around 5000 rpm.

03 g35 with a pe twin kit.