QTP cutout downpipe
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Registered User
Joined: Nov 2002
Posts: 54
From: Ayuh, Maine
Car Info: 04 STi
QTP cutout downpipe
Anyone out there using a quick time performance downpipe with the exhaust cutout. Seems like perfect solution for me, but I'm wondering about CELs and or boost spikes from switching back and forth. Is there an engine management system that can be switched quickly and easily from inside the car to accomodate open exhaust/ stock exhaust parameters?
Registered User
Joined: Nov 2004
Posts: 361
From: Ewa Beach, Hawaii...Current Best Time: 12.59 @ 107.48mph (108.47 best mph) in Hawaiis humid weather! w/ stock turbo&intercooler
Car Info: 2004 STi.....stock turbo/intercooler/cat-back, aftermarket intake/downpipe/piggyback
Im using it! along with my vishnu XEDE piggyback, it gets pretty loud w/ the xpass open - adds about 20HP....used to run 13.3 to 13.4 stock
Dahveed aka Robin Hood
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Joined: Nov 2002
Posts: 4,793
From: Robbin' the Hood (Claycord)
Car Info: (RIP) '04 STi Silver
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Originally Posted by JT-Sti2
Im using it! along with my vishnu XEDE piggyback, it gets pretty loud w/ the xpass open - adds about 20HP....used to run 13.3 to 13.4 stock
Also the QTP doesn't open until boost kicks in. I don't like that. Hurts the spool up.
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