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06-05-2006, 09:08 PM
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Backfire on Spintechs
Hey guys i was wondering if any of you knew about the spintechs backfiring when ran without cats. i heard that the spintechs sound good but tend to backfire at about 3000 rpm on stangs without cats. this are for the side exhaust set up. let me know anything you know about this. thanks all!
 
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06-06-2006, 05:51 AM
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Any car without cats is prone to backfire, too much exhaust and not enough engine, it's not necessarily the muffler itself. I've heard bonestock GT's with the only mod of an X-pipe backfire like there was not tomorrow.
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2001 S2 Roush, 440 rwhp 404rwtq@6psi, ProCharged,mods in profile 1999 Lightning,lowered,rims,exhaust,headers,mystic flames 1997 Civic, daily grind, 39 mpg BAJA boat with cammed out 383 Stroker 
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06-06-2006, 06:40 AM
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I had spintechs w/o cats and I didn't have any backfiring issues. Sounded good when I down shifted though
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06-06-2006, 08:00 AM
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I don't think I have a backfire, more of a gurgle.....
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2003 Redfire Roush Stage II #6395 377.5hp/ 372.9tq@ 8psi Small vid of blower 30mph drive by Click here for pics   <----Click for mods....
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06-06-2006, 09:35 AM
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Quote:
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06-06-2006, 10:11 AM
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ok cool thanks guys. that will really help
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06-06-2006, 12:01 PM
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In some cases, backfiring is caused by a leak in the exhaust system. Check that out as well.
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 Drag racing. Because football, baseball, basketball, and soccer only require one ball. http://www.myspace.com/360Rocket
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