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Miragew/swap
 Post subject: 2.5 or 3?
PostPosted: Tue Mar 04, 2003 11:34 pm 
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Location: Atlanta, GA
I am going to get a full downpipe and exhaust custom made. All mandrel bent. I have an 89 mirage with 4G63T swap like most of you. I wanted to know if the 3 inch exhaust was going to be to much, take away to much back pressure and have a negative effect on my car?

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dsmracer
 Post subject:
PostPosted: Tue Mar 04, 2003 11:44 pm 
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With a 3" system you should be fine. Most people forget that the less backpressure an exhaust system has on a turbo car the better. It's not needed like on a NA car.
Engine Size
1.0L-1.9L - 2.5" Piping
2.0L-2.5L - 3.0" Piping

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Jason Veraldi
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http://www.4g61t.org/forum/viewtopic.php?f=3&t=34532
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Starquest aka AndyR
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PostPosted: Wed Mar 05, 2003 4:02 pm 
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3" all the way.
2.5" is good, but 3" is best.
I agree with DSMracer, backpressure is the enemy of a turbo.


Last edited by Starquest aka AndyR on Wed Mar 05, 2003 8:03 pm, edited 1 time in total.

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dsmracer
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PostPosted: Wed Mar 05, 2003 6:57 pm 
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Hey, I think that was on purpose..."DSMricer"? :-? Feel free to edit that post. :wink:

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Starquest aka AndyR
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PostPosted: Wed Mar 05, 2003 8:03 pm 
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hehe,
actually that wasn't on purpose, but afterwards I noticed and I was wondering if anyone else would notice it... :lol:

edited. :lol:
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