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Performance Question

This is a discussion on Performance Question within the External Engine forums, part of the LSx Technical Help Section category; What is the power differnce between running and off road exhaust system and running one with Cats?...

  1. #1
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    Performance Question

    What is the power differnce between running and off road exhaust system and running one with Cats?

  2. #2
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    you should get a few more hp from a off road system

  3. #3
    Just me Y2KPewterSS's Avatar
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    <10 Hp
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    Quote Originally Posted by konigandy6 View Post
    I'd rather be bi than full homo!!!!

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    member since may 2000 nhraformula's Avatar
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    black
    2000 nhra edition formula

    5-10 h.p at very most
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  5. #5
    Senior Member ss~zoso~ss's Avatar
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    SS: NBM, tan top
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    a nice smell

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    alright cool thanks for the help guys i believe i am just gonna gut the cats so that way i can pass inspection.

  7. #7
    Member 89LX's Avatar
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    SES Light?

    If you gut the cats be prepared for a SES light.

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    Cant i buy 02 sims to correct that problem?

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    Member 89LX's Avatar
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    Yip

    Yip...there is a set on EBay as we speak (type LS1/search).

  10. #10
    Member Transam388's Avatar
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    To me unless you really race at the track a lot it is not worth going without the cats. Just get some nice high flow cats and be legal. I once even had a DPS officer pull me over and ask why my car was so loud. He then stated that usually means the cats have been removed. He actually looked under the car and even tapped on the cats to see if they were hollowed out. He let me go but some do actually check for that stuff.
    98 T/A: HPE 5.3 Heads, 238/242 113 cam, Kooks 1 7/8 stepped LT headers, Custom Y pipe, Cut out, Borla, NW 90MM TB, FAST 90MM Intake, TB Bypass, Under Drive Power steering and Crank, 150 Dry NOS, Yella Terra rockers, 3400 TC, HPE tuning,

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    Quote Originally Posted by Transam388 View Post
    To me unless you really race at the track a lot it is not worth going without the cats. Just get some nice high flow cats and be legal. I once even had a DPS officer pull me over and ask why my car was so loud. He then stated that usually means the cats have been removed. He actually looked under the car and even tapped on the cats to see if they were hollowed out. He let me go but some do actually check for that stuff.
    i agree. My friend got pulled over and the cops used a mirror on a long stick to look under the car for cats.

  12. #12
    Junior Member watson023's Avatar
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    Quote Originally Posted by 99blueZ View Post
    i agree. My friend got pulled over and the cops used a mirror on a long stick to look under the car for cats.
    Checked it with a mirror on a long stick? Phh. What a dick. I don't see the big problem...just too loud?

  13. #13
    Junior Member shabysurf's Avatar
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    if you like that loud raspy sound, then go for it, but I say it's not worth the hasle.

  14. #14
    We'll be back... GatorSS's Avatar
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    Quote Originally Posted by ss~zoso~ss View Post
    a nice smell
    Ooooh, ooooh that smell! The smell that ...

  15. #15
    Member cobrahunter's Avatar
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    Yeah, around here, the cops are really starting to be dicks. Okay, so it's a little loud. Why don't they just focus on thise drivers who go around driving recklessly with their suped up cars? Just the other night, I had a cop pull me over, and started giving me the 3rd degree because my RKSport airlid didn't have any identifying marks to prove it was a legal lid (as opposed to "one of those illegal Japanese aftermarket lids" - for an LS1? Are you kidding me? I've never even heard of such a thing!).

    I guess I really took the wind out of his sails when he asked me to pop open the hood. I guess the only reason he let me go because I don't have a blower, turbos, or NOS hoses all over my engine, and it did appear to be legal. That's okay! I'm going for an all NA-engine anyway. Oh, and surprise, surprise. It's coming towards the end of the month...ticket quotas anyone?

  16. #16
    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by cobrahunter View Post
    Yeah, around here, the cops are really starting to be dicks.
    On that note I just got a fix it ticket for no front plate and tinted side windows.....i either have to pay $220 or scrap my windows and get new plates.

  17. #17
    Junior Member watson023's Avatar
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    for the plate, just screw it into the platic part under the front (ya know, the part that brings air to the radiator). I got a ticket for no front plate, but since I've done this, no problems. Looks a LOT better than putting it in the actual license plate spot. If your tint job is actually illegal, I don't know what to tell ya, but if not, I'd fight it in court.

  18. #18
    Member cobrahunter's Avatar
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    Yeah, I've been pulled over a couple of times while driving downtown at night; once for no plate. Lesson learned: I no longer drive down the main street in downtown at night.

  19. #19
    Junior Member watson023's Avatar
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    Quote Originally Posted by cobrahunter View Post
    Yeah, I've been pulled over a couple of times while driving downtown at night; once for no plate. Lesson learned: I no longer drive down the main street in downtown at night.
    Haha. Nice.

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