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OK, what is the max HP I can get for an auto IS, without changing it's tranny, while keeping it sounding the same? Meaning, I don't want to hear that high rev winning sound from my motor. I basically want to keep it sounding just like it sounds stock... if at all possible.

Thanks in advance.
 

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i would post in this in the Go Fast Forum...but im thinking with some slight tranny modifcation like a tranny cooler and other stuff the IS auto tranny is good for 450 to 500 Rwhp but dont quote me on it...its what ive heard..anyways goodluck
 

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Peter_Klim said:
OK, what is the max HP I can get for an auto IS, without changing it's tranny, while keeping it sounding the same? Meaning, I don't want to hear that high rev winning sound from my motor. I basically want to keep it sounding just like it sounds stock... if at all possible.

Thanks in advance.
the kit i have is putting 408 rwhp on my auto, but there is an upgrade to the tranny that comes with the turbo kit i bought. contact pfsupercars for more info on this.

with a turbo, there is some spool up sounds that are audible, this is usually masked by the tires breaking traction @ every upshift :p .

there are options of blow off valve sounds, mine currently is alittle 'thup thup thup'-y

ML
 
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