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Best Cat-Back System?

This is a discussion on Best Cat-Back System? within the External Engine forums, part of the LSx Technical Help Section category; Hi. I im in the process of buying an intake/exhaust for my LS1. I was thinking of going with SLP ...

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    From 2JZ to V8 juiceboxx's Avatar
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    Best Cat-Back System?

    Hi. I im in the process of buying an intake/exhaust for my LS1. I was thinking of going with SLP Intake or K&N Intake and SLP or Bolra for exhaust. What are the best in each category? I live in California, so Catback is a must.

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    Senior Member SeVeReDiStOrTiOn's Avatar
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    05 Wrangler
    00 Z28 sold :-(

    Depends on what you want...any intake lid will do, they're all pretty much the same. Here's a link to check out the diff sounds of the catbacks...with and w/o mods. http://ls1sounds.com/

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    AnToN
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    what r the emissions in cali? i live there and i want to get longtubes but run cats. will i still pass the inspection?

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    Slow'er'Ass Mr. Luos's Avatar
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    I personally recommend the Magnaflow catback.

    Not too expensive, flows well, and sounds great IMO.

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    Member SKULLZ's Avatar
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    I had the same problem here in Colorado, I asked the emissons guy, he said all he cares about is that I have all the emissions fittings and cats, ask the emissons people there, the only thing that matters is if the exhaust is clean enough

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    Senior Member mrr23's Avatar
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    dark bowling green
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    the bassani tru-duals will make more power than the borla. the bassani hooks to the factory 00-02 cats and goes over the axle to exit out the rear. so, that shuld meet all california requirements. here's the dyno i did comparing the borla and the bassani. pics of the system can be seen on my websites. just click the links in my sig.


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    2 is better than 1!!! noblesramair's Avatar
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    I personally recommend the Magnaflow catback.

    Not too expensive, flows well, and sounds great IMO.
    Yep, i second this, i have a magnaflow on my trans am and i love it!

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    member since may 2000 nhraformula's Avatar
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    im a fan of the hooker exhaust.

    long tubes in cali will fail.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

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    Boosted Foolz
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    BlAcK
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    i have loudmouth exhaust, if ur not doing headers or cats, loudmouth would be a good option...

  10. #10
    i am a smog technician here in california and yes long tubes are not legal in ca...pm and ill let u know more details..

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    Boosted Foolz
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    BlAcK
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    ^^^ man that sux, and i hate NYS for making me have a front plate in my car...

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    Pewter
    1999 Camaro Z28

    I am pretty fond of my Borla. I like it cause with the long tubes it sounds bad ass and then if ne and the old lady have to take a road trip in my car I can cap it off and sound almost stock. Then she wont bitch too much!
    99 pewter Z28 M6, SS hood, 10 spokes, Brembo rotors, lid, K&N, Ripper, CAGS, Pacesetter LT's, Borla, TSP ORY-pipe, O2 simulators, STB, SFC's, free mods. Cant forget about my hot fiance in the passenger seat!

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    LOVE my Magnaflow!

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    Junior Member Vette LS-1's Avatar
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    I enjoy the Corsa exhaust, its well made and has a raw exhaust tone.

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    Madeche Vision...soon The Scientist's Avatar
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    but is the corsa as quiet as they claim it to be while cruising at 75-80 on the interstate doing anywhere from 2500-3000 rpms???

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    Junior Member Vette LS-1's Avatar
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    honestly, ive only had the car a few weeks, but it is fairly quiet on the Highway. but sounds great at WOT and in btw shifts.

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    Member jd2002ss's Avatar
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    GMMG...ya maybe it's expensive but....

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    you shouldn't be doing 3k RPM on the freeway unless you are hauling

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    Kooks headers on with off road pipe. My SLP loudmouth was to loud and the sound was BAD real BAD. Had a Magnaflow installed sounds a hole lot better but which it was a tad louder at idle.

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    Madeche Vision...soon The Scientist's Avatar
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    Quote Originally Posted by ryan_gilson
    you shouldn't be doing 3k RPM on the freeway unless you are hauling
    Tell me if I am right A4 with 3.42 gearing runs:
    75 mph = ~2500 rpms
    90 mph = ~3000 rpms
    When the speed limit is 75 I will be doing somewhere between these two. Generally closer to 75.

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