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omg please help, cutout problem

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Old Apr 29, 2010 | 10:54 PM
  #1  
torqls1's Avatar
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Default omg please help, cutout problem

installed slp y pipe ''2.5 inch and slp lm2 catback 3''
anyways went to install my qtp cutout, i placed it rite before the resonator the only problem is the cutout is 3'' it fits sideby side with the resonator the way it should but when i then attach it to the ypipe the y pipe goes inside of it then when i try to clamp it down it wont tighten even remotely close to snug. i believe this is becuz the ypipe is 2''5 and the cutout is 3''.... how to get this to work? i dont believe buying a 2.5 cutout will do the trick cuz then it will be the exact opposite, will go good with the ypipe but then be to small for the resonator......
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Old Apr 29, 2010 | 11:31 PM
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I didn't read your post very well since it's written in "chat speak," but you definitely want your cutout to go in the I-pipe, which should be 3".

I'm going to move this from the Pontiac Firebird 1967-2002 forum to the exhaust forum since it will get three times as many views there and this post has nothing at all to do with Firebirds specifically.
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Old Apr 30, 2010 | 12:55 PM
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Yep. If it is a 3" cutout, it should go on the I pipe(right before the axle is a good spot )
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Old Apr 30, 2010 | 01:10 PM
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go to autozone or a muffler shop and get a 2-3/4" to 3" adapter. stock exhaust size is 2 3/4".
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Old Apr 30, 2010 | 01:38 PM
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The cutout flange is not going to buckle with a clamp. The I-pipe i believe had two slits cut into the end that the y pipe slides into.
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