My 97 Grand Pri GT has service engine light on so I used both my predators, U7194 and U7191 to try and read the trouble code. The scanner gave error "cannot read trouble codes".

I tried both with the car on and off. Also with ignition "on" without starting the car.

Any ideas?

2-cents worth......sport mode and normal mode both have Displacement on Demand/Active Fuel Mgt. Only "manual" mode of tap shifting holding gears "disables DoD/AFM." Meaning sport/normal both allow 4 cylinder mode in partial throttle. Only way to disable it is ticking the option in a tuner like the ...

I installed the 91 Octane tune on my G8 GT and did a 100 miles then did data log.

Since the L76 in the G8 has DoD (Active fuel management), I cruised around 1900rpm in SPORT mode which disables the DoD.

Is the SPORT mode suitable to do Data log or do I need to redo the log in Normal mode?

Will the Diablo tune yield better MPG's than the 91 Octane tune?

I did a log following your guide and got the following log file which I uploaded here:

https://www.yousendit.com/download/QlVqK0dqRnc1UjVvZE1UQw

Due to traffic I wasn't able to keep constant at least 1800 RPM and was wondering if the file is good enough to use and adjust the slope.

Car is 06 ...

I installed the diablo tune. I can definately feel the power increase after each mod i did. (Mods are installed after, not all at once). I felt the power increase after the diablo tune and it said tuning successful. Yes it feels like i'm hitting a limiter, it will go to 160mph then i guess fuel ...

I adjusted the slope to -4%.

its set at -5% now. Today was the hottest day I did any of the logs at.

So I drove 200 miles and did another log. Now DSLogRedus is saying: "Adjust Inj Slope UP by 2%, set the following adjustment on the Predator Tool: +2%."

Should I go ahead and make the change?

Each time I do the log Redux is telling me to adjust the slope differently.

I uploaded the current log ...

So I uploaded two logs. The first one that asked to set to -3% and a new one I did yesterday. The new one I did yesterday is asking me to reduce by -2% which would put me back to the initial -5% which I had it set as.

Note that with both logs I ran out of highway so the end of the log there are RPM ...

I posted the log above in this thread.

Note that close to the end of the log I had to slow down to take the exit so the ending of the log the RPM goes below 1800. I'm assuming DSLogRedux ignores the values below 1800 RPM. Do you think my log got effected? Does the log look good to you?

2006 GTO U7191

The first time I installed the diablo tune and did a log, DSLogRedux asked me to adjust the injector slope to +2%. I drove around 50 miles for the PCM to relearn the tune and did another log. This time it is asking me to adjust the slope to -5%.

Should I adjust the slope to -5% or ...

Monte I hooked my Diablo today and found Accelerator Pedal Position E and Accelerator Pedal Position D as options in the tool for the log. So it looks like there is no bug.


I decided to do another log today since I changed the injector slope to -5% and disabled CAGS last night.

I drove 10 miles ...

Yes it might be an issue because I downloaded my log more than once and the conversation was messed up each time

Is my log obsolete because I didn't use Commanded Throttle Position?

Sorry its Dataviewer 3.2.0.0. The link said 3.1 which is wrong.

Software suggests to adjust injector slope -5%. Is it possible to disable CAGS which I make adjustments for the slope and modify the tune?


UPDATE: I just adjusted the injector slope to -5% and disabled the CAGS.