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      11-01-2011, 01:37 PM   #4
TheStig
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Drives: Alot of everything.
Join Date: Jan 2011
Location: Potomac MD

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Quote:
Originally Posted by z435is View Post
and you have the 35is model? that strange because your probably running lower boost now. stock up to 14.5 psi in over boost jb4 without downpipes probably doesn't boost that high. So maybe more responsive but I don't know about over all speed,
JB4 Disables the IS Motors Over boost option and is always a 15psi now
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