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  #1  
Old 11-12-2011, 05:24 PM
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Aftermarket cats?

Any company out there that make aftermarket hi-flo cats that wont effect emissions and are "street legal"?
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  #2  
Old 11-13-2011, 02:05 AM
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I did Magnaflow cats at a shop in Everett called Beyond Repair (off Everett Mall Way) for $200 installed each side, just make sure they're 2.25" in/out and they install them so they centered exactly like the old cats were. Sorry, I dont remember the number, but the shops catalog will narrow it down due to size and not needing to worry about CA emissions, so you'll only have one or two options.
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650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's
325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex

600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's

135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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Old 11-14-2011, 12:40 PM
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Quote:
Originally Posted by m5james View Post
I did Magnaflow cats at a shop in Everett called Beyond Repair (off Everett Mall Way) for $200 installed each side, just make sure they're 2.25" in/out and they install them so they centered exactly like the old cats were. Sorry, I dont remember the number, but the shops catalog will narrow it down due to size and not needing to worry about CA emissions, so you'll only have one or two options.
What is the advantage? HP or sounds?
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Old 11-14-2011, 02:15 PM
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I know around the 98 MY that they were kinda notorious for clogging anyways, enough that BMW put out a recall. I had already had one replaced, but one of them had started to rattle (I dont remember, old or new(er)), so I had it replaced. The exhaust note did get slightly deeper, but didnt really feel any difference in power. Within a few months the other one failed, so I was forced to replace the second one (really long story, had to be towed and everything), so now theyre both new. Having the 2nd one replaced once again gave a slight increase in exhaust note, so theyre more free flowing than the stock ones, but for the price vs stock, you cant go wrong.
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650hp 10 X5///M - Stage 2, Vibrant 1794's , gutted cats, custom intake, AC Forged 22's
325hp 98 BMW 740iL - ///M5 6spd, www.bavengine.com w/ Performance Option, electric fan, CF intake tube w/ heatshield, Mag 14816 w/ notched bumper, Bilstein/H&R Stage II/Powerflex

600+hp 02 Harley F150 - MHP900 Stage 3 engine, KB2.3, 8# lower, 60# inj, Walbro FP's

135hp 01 TL1000R - M4 full exhaust, K&N, Yosh box, -1/+2 gears, 2CT's
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