Very Rough And NO throttle

[R8SVton]

Hi guys,
Did some basic mods to the tune to start of with but got a problem.
Once I uploaded the file, the car had a very bad idle like it had a very wild cam in it.
Plus I had absolutely NO throttle response, very time I put my foot down on pedal it just wont rev like I got no pedal feel.
When I put the stock tune back in, no problems. I'm running with MAF.
Here is a copy of the Stock tune and Rev1 tune.
Cheers.
2014 LS3 M6 STOCK FILE.hpt
2014 LS3 M6 REV1 FILE.hpt

[schpenxel]

Need log also

[R8SVton]

It struggles to idle to record a log

[R8SVton]

Hi guys,
I found my issue but how do I get around it.
Found issue.JPG

[schpenxel]

How is that the problem?

Or what makes you think it is?

[R8SVton]

How is that the problem?

Or what makes you think it is?

I ended uploading the stock tune back in, car started, idled and ran good.
Then I started to make 1 change at a time, uploaded to car after every change, started car, idled and ran good.
Then when it came to adjusting TQ Management, it started the problem again.
I went back and forth with the tune running stock TQ Management and all the other mods, and the adjusted TQ Management and that was causing my problem.

[GHuggins]

Was it just torque management in neutral and park - I saw this cause problems on a ZL1 using SCT, but not since then using HP... It had issues with the rev limiter just disappearing though - no idle or throttle issues...

[R8SVton]

Was it just torque management in neutral and park - I saw this cause problems on a ZL1 using SCT, but not since then using HP... It had issues with the rev limiter just disappearing though - no idle or throttle issues...

No, in gear as well.

[mowton]

On these torque based PCM's maxing out values is most times worse than not tuning them at all. Also the Speed controller max'd creates a problem as well. Be more scientific if you are trying to reduce torque take smaller steps.

Ed M

[GHuggins]

A gen 4's OS is not 100% torque biased - BUT I also don't max them for these reasons, however - unless it's an automatic, I won't worry about trying to make them trend with actual vehicle outputted torque... In other words I make them a couple to 10 or 20 under max...

Another side note to this - just because there is a max limit in the tune, doesn't mean that this is the max limit in the ECM... Keep lowering the values until that message no longer pops up and see how it does...

[R8SVton]

Hi guys,
Found out problem and all fixed and running like a beast. The reason I was getting the Parameter Out Of Range message was that in Neutral/Park, the max allowed value is 8,191.75Nm. So if you max the whole table at 8192Nm as what the bottom right hand corner states then your out of min/max range. So I tried my luck and made the changes to the rest of the table at 8191.75Nm and bang it worked.