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95.5-2004 Tacomas & 96-2002 4Runners 4th gen pickups and 3rd gen 4Runners

stock headers, 2.5" cat ->muffler ->2.25" muffler back?

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Old 05-08-2005, 11:05 PM
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stock headers, 2.5" cat ->muffler ->2.25" muffler back?

I was thinking about getting a mandrel bent 2.25" muffler back pipe bent soon. why? because the 2.5" bend over the rear diff is really crappy for air flow it seems.
and from what iv read 2.5" takes a bit away from low end wich i like to use a lot. and 2.25 takes a bit away from the current high end i have because of 2.5" catback. so i can find an even medium with this, right?
Old 05-08-2005, 11:14 PM
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2 1/4 is fine
Old 05-09-2005, 10:37 AM
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any recomendations on pipe bend ideas for the muffler back? most efficiant exit point?
Old 05-09-2005, 12:46 PM
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I just cut mine off right behind the axle like so:
click to enlarge

Last edited by OicnaiC; 05-09-2005 at 01:10 PM. Reason: add pic
Old 05-09-2005, 03:59 PM
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whats at the end of your pipe?
Old 05-09-2005, 04:13 PM
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looks like he has a supertrapp muffler on there.... or some sort of diffuser

my muffler jsut has a turndown and exits before the rear axle, however i have a pickup truck and that is legal for a pickup, it isnt legal on a 4runner, but many people do it that way also
Old 05-09-2005, 04:15 PM
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i was thinkin bout that.. iv seen some desert runner fords like that.... what kidn of imporvement do you see?
Old 05-09-2005, 06:10 PM
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Yeah thats my SuperTrapp disc only muffler, it's tunable and freakin sweet. I eventually plan to go with the full SuperTrapp muffler, not just the disc one. The SuperTrapp is great I can give it more air flow (by adding more discs) and improve the high end or add back pressure (by removing discs) to help the low end. Granted it's not going to be a HUGE difference in power but it is noticable.
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