# Ka-T 3" Downpipe to 2-1/4" Exhaust?

**URL:** <https://forums.speedlife.net/t/ka-t-3-downpipe-to-2-1-4-exhaust/117919>\
**Category:** SON240sx Automotive\
**Created:** [August 21, 2008, 9:31pm UTC](https://forums.speedlife.net/t/ka-t-3-downpipe-to-2-1-4-exhaust/117919 "2008-08-21T21:31:26Z")\
**Posts on this page:** 3\
**Page:** 1

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**Author:** ![Jr2.5sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jr2.5sx/32/5621_2.png) [@Jr2.5sx](https://forums.speedlife.net/u/Jr2.5sx)\
**Post date:** [August 21, 2008, 9:31pm UTC](https://forums.speedlife.net/t/ka-t-3-downpipe-to-2-1-4-exhaust/117919/1 "2008-08-21T21:31:26Z")

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Hey guys, I recently purchase a T3/T4 Turbo and intercooler, I am certain I can install the system myself, just not completely sure about the exhaust setup I am going to have…

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I have a 2-1/4% Magnaflow exhaust atm, sounds wicked :) But I am going from a 3" Turbo downpipe, is this going to cause back pressure problems? Il only be boosting at 7psi untill next year... Also wondering if anyone has some good experience with a piggy back ecu like Greddy emanage or whatever and if i should get it asap.

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(edit: Installing turbo kit on the long weekend)

Thanks people :D, im a turbo noob!

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**Author:** ![sidewayz240](https://avatars.discourse-cdn.com/v4/letter/s/e99b99/32.png) [@sidewayz240](https://forums.speedlife.net/u/sidewayz240)\
**Post date:** [August 21, 2008, 10:11pm UTC](https://forums.speedlife.net/t/ka-t-3-downpipe-to-2-1-4-exhaust/117919/2 "2008-08-21T22:11:49Z")

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it wont cause any problems per say, but it is too small for a turbo setup to breath fully. You’ll just lose out on a couple hp, no biggie.

You dont NEED an emanage, you could set it up good enough with a SAFC but a piggyback will give you much more tuning capabilities

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<div class="post-metadata">

**Author:** ![Jr2.5sx](https://yyz2.discourse-cdn.com/flex034/user_avatar/forums.speedlife.net/jr2.5sx/32/5621_2.png) [@Jr2.5sx](https://forums.speedlife.net/u/Jr2.5sx)\
**Post date:** [August 24, 2008, 8:03pm UTC](https://forums.speedlife.net/t/ka-t-3-downpipe-to-2-1-4-exhaust/117919/3 "2008-08-24T20:03:49Z")

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thanks man very helpful 🙂 is there a way to move posts if they’ve been concluded? lol