Tune help

[kewGTP]

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/0B3y...ew?usp=sharing

[J57ltr]

Subbed.

[Fivefingerdeathpunch]

Do you have a wideband to confirm that this AFR has not changed?

[timboku]

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

[kewGTP]

LTFTs lock in to -1.6 at WOT - I do not have my wideband installed yet, but like i had mentioned my fueling/MAF settings have not changed since the dyno. No SES lights, running 93 pump gas (Shell if that matters) I have linked my most recent scan from HPTuners below

https://drive.google.com/file/d/0B3y...ew?usp=sharing

[timboku]

Gas blend changes from summer to winter which can effect things

[kewGTP]

Could it be that my trans dipstick is knocking against my headers causing false KR ?

[GTPpower]

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.

[kewGTP]

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.

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

[Scottydoggs]

your sig says hp tuners. take a degree of timing out of the wot cells.

[SgtMarshal]

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

octane boosters don't work

[kewGTP]

I will pull some timing and see what changes happen

[GTPpower]

octane boosters don't work

This. Don't waste your money on them. Buy some 110 octane race gas.

[blueguy]

E85 is fun, too.

[kewGTP]

E85 is fun, too.

I will be going XP cam/E85 in spring, but until then just trying to sort out my KR. I will report back this weekend when I have a chance to drop some timing

[kewGTP]

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

[JamesIvey24]

bend your dipstick?

[kewGTP]

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

[charlieRobinson]

Are you scanning? Can you post a screen shot of the KR?

[kewGTP]

https://drive.google.com/file/d/0B3y...ew?usp=sharing

Thats a export from the log file.