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Old 01-12-2011, 11:59 AM   #113 (permalink)
G37sHKS
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Join Date: Feb 2010
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Hey Kastley, after million of search.. I found out why the drop at 2k-3k RPM..

its not about the stock exhaust, its about the Y pipes. and no its because its cheap..

actually all the Y pipes that have 2.5" and 3" merge will have high gains from mid to top but drop in low end...

here some examples..

Tanabe Y pipe VS MotorDyne Y pipe
Tanabe has 60MM dual to 70MM merge.



Stock Y pipe Vs Motordyne Y pipe (stock car)

so wow.. gratz on ur 40$ Y pipes.. cheap Y pipe ftw
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