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Ecu Tuning 6000Rpm Problem (Fuel Cut)

lolo.37

By lolo.37,
in Engines & Forced Induction

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lolo.37 Contributor

lolo.37

Posted
Posted

Hello from France ;)

I just change my turbo on my forged RB3025.
I had a GTX3071R (too small and making too much EGTs)
And i'm puting a GTX3582R AR1.06.

Car is running good and pulls good for these 1.25 bar i'm starting with.

But when there is a good load (like in third or fourth gear) the fuel is cutted suddenly @ 6200rpm and if I stay WOT, the rev stabilises @ around 5800rpm.
I Can hit the 7000rpm limiter only if I'm in neutral or in first gear.

I suspect it to be a ECU tuning stuff on my nistune. So I let my base tune and 2 logs (first in tuner mode, second in stream mode)

NB, when converting to RB30, It was necessary to unplug the MAP sensor unless eratic working under 2000rpm.

http://speedy.sh/TKdXR/RB30DET-GTX3582R-17022014.bin
http://speedy.sh/vcq6y/NIStune-2014-02-19-1758-13.csv

(tuner mode with TPload shown)

http://speedy.sh/n8FmB/NIStune-2014-02-19-1801-55.csv

(stream mode without TPload shown)

Hoping someone could help me ! ;)

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https://www.sau.com.au/forums/topic/439467-ecu-tuning-6000rpm-problem-fuel-cut/
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Ben C34 Grand Master

Ben C34

Posted
Posted

I never had ti unplug the map sensor to get mine to run nicely.

Email nistune with your issue. Mat will be able to point you ib the right direction.

I assume you have set up the max tp settings etc.

lolo.37 Contributor

lolo.37

Posted
  • Author
Posted

I never had ti unplug the map sensor to get mine to run nicely.

Email nistune with your issue. Mat will be able to point you ib the right direction.

I assume you have set up the max tp settings etc.

Thanks Superben,

Message sent to Matt, he is taking time to answer me. :)

I'll post the solution asa I get it !

  • 3 weeks later...
lolo.37 Contributor

lolo.37

Posted
  • Author
Posted

I couldn't have a complete answer because mat had some personnal issues.

So put some more elements for you to see.
Here is one log attached.
At this moment I'm 4,66V on my Z32 MAF. (I tried yesterday with a ford lightning maf 700hp, and I'm 5,1V at this same 6000rpm when it cuts.)

post-86717-0-30751100-1394714660_thumb.jpg

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