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This is a discussion on COBB ACCESSPORT STAGE 2 + AEM 93, WHATS NEXT?? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by plasmarex12 what about an up pipe with or without divorced waste gate? i heard the newer cars ...

  1. #16
    Registered User Axex's Avatar
    Join Date
    Aug 2011
    North Cackalaky
    Quote Originally Posted by plasmarex12 View Post
    what about an up pipe with or without divorced waste gate? i heard the newer cars its not as great of a mod? hate to thread steal but im interested in this also. i have pretty much exact same setup but with tp tune and no intercooler. what bout porting the stock turbo?
    The up-pipe is a must for the older engine generations as they have catalytic converters in them. The newer generations do not, so there is less reason to swap them. The external wastegate is more effective at bleeding off unwanted excessive boost pressure as compared to the stock system. Porting the stock turbo would also help with this same issue. I don't think either of these will really get you more performance though. They are mostly for people who experience "boost creep" and will allow you to control the boost properly. They are safer and for some people with high flow intakes/exhausts in cold climates they can become a necessity. They also seem to be a good choice if upgrading the turbo and starting to push some serious air through the engine.

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  3. #17
    Registered User teflon_jones's Avatar
    Join Date
    Apr 2007
    8000' up in Colorado
    What braking and suspension mods do you have planned to support your increased power?
    Past Subies - '11 STI Limited stage 1+ and '04 STi stage 2+
    '13 Wrangler Rubicon - custom front bumper w/12k lb winch & off-road lights, skid plates, diff guards, etc.
    '04 Porsche 911 Turbo GT2 clone 600 HP/TQ
    '77 F-150 heavily modded for off-roading

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