What is the highest flowing cat available with a 2-1/2" inlet and outlet? Cost is not a factor. Thanks!

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
Former Paxton (6-psig): 12.57 @ 111 mph.
Former Paxton (6-psig) & former 50-hp nitrous: 12.04 @ 114 mph.
Current ATI D1SC (Initially 10-psig): Projecting high 11's.
Future ATI D1SC (15-psig): Gotta catch them pesky 26-psig boosted TTA's!!

http://willie.camaro-firebird.org/

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

 

Steve

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Steve's Trans Am Temple

 

a hollow one

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89 camaro 305 tbi, flomaster 3 chamber cat back, gutted cat, Edlebrock open element, and a 160 degree T-stat. 2 kicker comp 12"'s, polk for the rest. Phoenix gold xs2300 to subs, kicker impulse 404XI to 4 speakers, pioneer DEH- P7000R head unit, and finally a 12 disc changer. Full leather interior from [URL=http://www.MrMikes.com[/URL](its nice)

TES Headers in the mail, and about to order a stage 2 fastchip.

 

I heard Random Technology was the best. If price isn't a factor I'd pick up one of those. CHP or Hot Rod did a test with those. They actually picked up a couple more HP WITH that on than with a straight pipe.

I've got a Catco and it flows awesome.