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Video request: bone stock vs 3.91 diff

2K views 5 replies 5 participants last post by  KenL 
#1 ·
I searched but couldn't find any, anyone know of one? Preferably from a dig.
 
#3 ·
there was a comprission before between 3 cars

one with a pulley other with a tune and the third with a tune

i will try to find it for u
 
#4 ·
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#5 ·
Unfortunately, that video was inconclusive because we have come to learn from experience, that marginal pulls from M5 to M5 are mainly due shifting points of each driver.

Just by looking at that video, I can from my opinion, guess that all three cars were stock ECU!
 
#6 ·
Dee-
No video but my 3.91 gear mod netted a 0.40 second faster 1/4 mile time (on a track, no inconsistent GPS) and plus 2 mph trap speed which in video terms is a six carlength margin in a 0 to 120 mph race. By the way when I say netted, I mean no other new mods and factoring in density altitude differences and even wind speeds and direction. Hope it gives you an idea.
Safe racing,
KenL
 
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