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Old 10-15-2004, 01:35 PM   #21
VR62STI
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Member#: 45417
Join Date: Oct 2003
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-The headers changed the sound slightly, but not much. Still sounds cool.

-This isn't Jon from i-club, this is Dave from here!

- I don't have a photo-hosting account, but if someone wants to post a pic please send me mail! This was a brand new Mustang dyno; Gruppe-S formed "Gruppe-S Tuning" with one of the MPJ/GBMotorsports guys. He was impressed with the numbers, but worried I was running way too lean.

- The AP does NOT take into account the headers; Cobb just doesn't seem to care about headers and have never tuned for them. They are assuming Stage 1 and 2 will probably work just fine with headers. I am pretty sure I was running lean because of the short-ram fooling the MAF. I won't know for sure until I dyno again. I haven't heard "crackling" (detonation) since pulling off the intake.

-The spool on the headers is nearly identical to stock. It may actually be identical to stock - I just don't feel a problem down low, and I hit peak torque fast! It certainly DID NOT shift power by 500rpms; maybe 50 to 100.
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