Choose the best catback ??

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May 27, 2005 | 01:47 PM

oOoLy

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From: kuwait

Choose the best catback ??

I want to choose the best catback for N/A 13.5:1 or 14.0:1 compression solid engine for drag racing ? ( open headers or open headers with 2 mufflers or x-pipe or borla catback or .... )

Thanks

May 27, 2005 | 01:50 PM

blkZ28spt

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From: The South

No cat-back. If you will be running at high RPM the entire time open header with extensions at least 18" past the O2's should be best for the 1/4 mile. A good X-piped dual system would also do very well and make more low-mid range, but again if you will be up high in the RPM's the entire time open headers are probably your best bet.

May 27, 2005 | 02:32 PM

oOoLy

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From: kuwait

Thanks blkZ28spt ..... so is it better to run open header with 2 muffler or without ?

May 27, 2005 | 02:36 PM

blkZ28spt

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From: The South

Quote:

Originally Posted by oOoLy

Thanks blkZ28spt ..... so is it better to run open header with 2 muffler or without ?

Is this for a track only setup, or being maximized for the track with no consideration for the street? Mufflers or not doesn't matter for racing, all that matters is getting ~18" of pipe after the collectors to keep outside air off of the O2's. The only trick to that is getting the pipe under the floor of the car on the driver's sidel. It's not hard, but you can't come straight back like you can on the passenger's side.