Tune issues
06-13-2008, 06:09 PM
#1
Thread Starter
Join Date: Apr 2008
Posts: 10
Tune issues
2006 GT 4.6, cold air, cat-back exhaust
Am running a 93 tune from VMP Tuning. Problem is around 2000 rpm I have a serious lag. Until it runs up to about 3000 rpm, it feels like a dead pedal. What is the recommended spark retards for these tunes? Also, what is Global Spark?
Am running a 93 tune from VMP Tuning. Problem is around 2000 rpm I have a serious lag. Until it runs up to about 3000 rpm, it feels like a dead pedal. What is the recommended spark retards for these tunes? Also, what is Global Spark?
06-14-2008, 05:48 PM
#2
4th Gear Member
Join Date: Aug 2006
Location: The P.R.K.
Posts: 1,975
RE: Tune issues
As far as I understand, when you purchase tunes from shops, they are supposed to require no additional modification on your part in order to make the tune function properly. I would call up that shop you get the tune from 
06-15-2008, 06:03 AM
#3
1st Gear Member
Join Date: Feb 2008
Location:
Posts: 99
RE: Tune issues
You just have to experiment with it...all cars wont run the same with the can tunes. If your using a SCT tuner then you can adjust your timing for different rpm ranges. If your car runs good in 0-2k rpm range then i would try to adjust the 2-4k rpm range. When i got my 93 tune from brenspeed the timing was too far advanced for my motor...causing "pinging" under a load. I had to retard my 0-2k range 6 degrees and other rpm ranges about 4 degrees.
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