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Old 13-02-2008, 07:36 AM   #1
sikford
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Going to be putting some ceramic coated pacemaker comps with a 3" high flow to a 2 1/2" exhaust with the same twin 3" tips i have now, how do i go about the high flow as it is 3" and the flange on the extractors is 2 1/2"...just want to know how some of you guys have done your systems.pics would be cool also.

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Old 13-02-2008, 10:01 AM   #2
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wouldn't it be better to just use a 2 1/2" cat then?...

i had a stainless cat... but it was 3" so i never kept it to use it... what size is the outlet off the extractors?
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Old 13-02-2008, 10:09 AM   #3
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i've heard alot of guys doing a 3" cat but the outlet of the extracotrs is 2 1/2", im just not sure how they do it.lol.they reckon the 3" flows alot more and is better performance wise.
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Old 13-02-2008, 10:31 AM   #4
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Just talk to an exhaust shop, would just be a matter of using 2 x 3"-2.5" reducers.
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Old 13-02-2008, 10:33 AM   #5
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yeah i wanna go there with an idea of what i can archive though.ill have a geez tonight
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Old 13-02-2008, 10:40 AM   #6
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Why don't you just go a full 3" system? If you are going to get a 3" cat the differance in cost wouldn't be much.
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Old 13-02-2008, 10:46 AM   #7
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Quote:
Originally Posted by stockoau
Why don't you just go a full 3" system? If you are going to get a 3" cat the differance in cost wouldn't be much.

what stocko said
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Old 13-02-2008, 10:55 AM   #8
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performance wise would it be better? i really have no idea
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Old 13-02-2008, 06:48 PM   #9
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Quote:
Originally Posted by sikford
performance wise would it be better? i really have no idea
We can all find out when I test it at wsid in the near future.I havent run with the full 3inch yet.
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Old 13-02-2008, 06:53 PM   #10
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nice, has it been dynoed yet with the change?
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