Issues with LS7 programming

[Jason S.]

Hi guys, I am hoping someone might be able to shed some light on an LS7 I am working on. It is a stock Z06 with a cam and exhaust (customer isn't sure what cam is in the car). At light load around 1500 to 2000 rpm, the timing is jumping around like crazy....about 8 degrees up and down rapidly. I tried zeroing out the torque reduction stuff, but it appears that it is still somehow active. Has anyone else experienced this? I have attached the log.

Thanks

[Jason S.]

I couldn't attach the cal, it's over 1 meg.

[grfperformance]

Turn off DFCO and CFCO. Also monitor idle adaptive spark. You also need to add more idle airflow. A big cam needs about 15% more air in the lower rpm ranges.

[redhardsupra]

Turn off DFCO and CFCO. Also monitor idle adaptive spark. You also need to add more idle airflow. A big cam needs about 15% more air in the lower rpm ranges.

you mean less air in low rpm?

[Jason S.]

Turn off DFCO and CFCO. Also monitor idle adaptive spark. You also need to add more idle airflow. A big cam needs about 15% more air in the lower rpm ranges.

This isn't happening in the idle range it's happening at light load driving.

[joecar]

Jason,

Posting tune file (.tun): Maximum allowed size 3.9MB
Posting log file (.efi): maximum allowed size 1MB
Posting zip file (.zip): maximum allowed size 2MB (compressed)

You should be able to post the tune file;

To post the log file, if it's too big compress it to a zip file and post the zip file.

If you're strill having trouble posting the files, send me a pm.

Cheers
Joe

[Jason S.]

Still no luck attaching the .tun file.

[joecar]

Try to zip the tune file and see if that works.

How big is the tune file...?

[Jason S.]

Nope...won't take that either.

[joecar]

Can you email it to me, include a link to this thread in the email...

My email address is in my profile (click on my username to the left of this post, select Send email to joecar).