Camaro ZL1 Smaller SC Pulley + Bigger Crankshaft Pulley

Hi,

I'm getting issues with a 2015 ZL1 from a customer which I tuned in Mexico (7800 feet over sea level) and now he took the car to Spain (sea level). Car was running perfect and making good power but now at WOT from 3,000 is making a hard hesitation, I don't think is a torque limit, could be spark plug gap (which I don't remember the value I set it), or anything else. Attached is log latest log file.

If someone could take a look and help me, I would appreciate it!

Thanks in advance.

Attachment 96643

Probably should post the tune as well.

Attached, I did some other changes to limits but no luck.

Unable to view that file, say its part of a remote network.

Mmm what about now?

Yes that worked

Have your tried swapping MAFs? Or cleaning the current one?

Quote:

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Originally Posted by ZincGT

Yes that worked

Have your tried swapping MAFs? Or cleaning the current one?

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Yes, I just told him to recalibrate spark plug gap (they were too big) and clean the MAF, tomorrow he will test it and send log. File is ok, right?

Thanks.

Ya, know issues seeing that

Hi guys,
No luck yet with this car, also I reduced a lot ignition table and there is not knock, boost almost keeps stable but RPM DROPS after 4,000RPM how is this possible? MAF is always 470+g/s until it drops. Is reaching MAF Limit?
Thanks.

no that can't be the maf limit...my car (pullied 2014 ctsv) is running in the mid 600 g/sec close to 6k rpms so that isn't it

Looks like you have negative spark advance at WOT...

So your log file lacks MANY pids needed to tell what is going on.

There are two things that stick out.

First is timing. -6 degrees is a killer

The Second is MAP. On the first pull it hits 246 kpa, after that 135.

The two together mean this car would make about 350hp.

Also you are missing all of these:

ECM additional parms

Try this. FYI I believe this is the same car HERE

I was DM'd about it.

Attachment 98283