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Tune help

kewGTP

kewGTP

New member
I have been fighting with my 05 GTP trying to tune out some KR, and unsure if I am running out of injector or if there is something else I should be looking at. Car was originally tuned at a local dyno shop and didn't have any KR but was running pretty rich. About a week later I started seeing 3-4* at WOT with the same tune, still not ruling out that it could be false KR. I should also mention the car was originally tuned on a 3.5" SC Pulley but I have since gone to a 3.6" pulley which has made no difference in the KR department. I should also mention my AFR when the car was tuned locally was 11.3-11.5 and that has not changed.

Any assistance would be greatly appreciated!

​https://drive.google.com/file/d/0B3yWMK4LUozRMlhORkhmVm5kU2s/view?usp=sharing
 


What is your WOT fuel trims at, and yes Don you have a wideband? Any ses light on? What gas you run?
 


You need to get your wideband installed, otherwise you can't tell if your afr has changed.


The easiest way to rule out false kr, is to fill up with race gas.
 
GTPpower said:
You need to get your wideband installed, otherwise you can't tell if your afr has changed.


The easiest way to rule out false kr, is to fill up with race gas.
Click to expand...

I did throw a couple of octane boosters in and saw no difference in KR still the 3-4* I will hopefully get the wideband installed in a couple of months
 


Pulled 3* or Timing from WOT cells - no change, I will try some race gas, but i am almost convinced it is false KR caused by my trans dipstick hitting the crossover on my ZZP headers
 


It was when installed, but I still hear a rattling coming from the exhaust at mid range rpms, I cant see anything else that would be causing a rattle
 
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