84-85 Trucks & 4Runners 2nd gen pickups and 1st gen 4Runners with solid front axles

best exhaust size?

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Old 05-15-2011, 10:37 PM
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best exhaust size?

well iv decide it is time to put on a new exhaust system, im going to run 2 1/4 off the stock manifold to a thrush turbo muffler to behind the right rear tire, will this be good set up.for dd/weekend warrior or should I do 2 inch? Also do I want 2 1/4 I.d or o.d, or 2 inch I.d or o.d, thanks
Old 05-15-2011, 10:47 PM
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2-1/4'' will work great
Old 05-15-2011, 10:54 PM
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i.d Or o.d?
Old 05-15-2011, 10:58 PM
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2 1/4" is great. 2" will be quieter. Do you have a 4runner or pick-up?

2 - 2 1/14 I.D.
Old 05-15-2011, 11:01 PM
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84 extra cab Pick-up
Old 05-16-2011, 07:25 AM
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For what its worth

The guy who I just had put on a down pipe for my Downey. Told me he used to do all the exhausts for dyno testing for pro trux, and the 22r and 22re ran best with 2 1/4 with a 2 in tail pipe, unless your running wide open throttle all day.

https://www.yotatech.com/forums/f208...cos-ca-234435/
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