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Performance parts = horsepower

This is a discussion on Performance parts = horsepower within the External Engine forums, part of the LSx Technical Help Section category; i don't ever seem to hear much about people talking about the K&N induction system on here, which i was ...

  1. #41
    Don't Listen to Me NE98LS1's Avatar
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    i don't ever seem to hear much about people talking about the K&N induction system on here, which i was looking into getting along with a magnaflow catback. are the K&Ns just not worth the money?

  2. #42
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    You wont see many people with the K&N fipk because its expensive. Especially compared to a lid. I picked up an fipk for cheap and have been very happy with it. Just remember not to soak the filter in the oil...otherwise it will harm the MAF.

    For the cost of things, a lid is better for your buck.

  3. #43
    member since may 2000 nhraformula's Avatar
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    the kn is over rated. a lid will make the same power.
    2000 nhra edition formula
    a few bolt ons, 379 rwhp
    11.96 @113.25

  4. #44
    Modding is an Addiction bww3588's Avatar
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    Quote Originally Posted by 01mmmz28
    you will not net 60+ hp on those mods.

    Lid----------5-7 hp
    LT headers--15-20hp
    TB----------7-10hp
    maf---------2-5hp
    catback(FM)-7-10hp

    I did most of the mods you listed, exept I have mac mid lenth header, mac catted y pipe, SLP loudmouth, Zo6 maf, SLP lid, K&N filter, and now my cam. stock dyno was 301 rwhp, after just the bolt-ons I did 349.9rwhp sae corrected. so basically I gained 48 hp. I just dont see 60+ hp out of what you listed. If you like the sound of the blowmaster exhaust, go w/ it, it's your car man, if you want better numbers go w/ a different catback.....Loudmouth, magnaflow, borla, TSP rumbler, hooker,........there are alot to choose from. I have yet to dyno after the cam swap.
    thats because you have an '01. 01's have redesigned exhaust manifolds that flow better than 98-00 and your macs dont flow hardly any better than the stock mainfolds. if you did long tubes you would see 60 more hp over stock

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    Grand Imperial Wizard Sarge's Avatar
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    This may be of some value....
    The complete bolt on list....

  6. #46
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    Got the thing on the Dyno after Supermaxx LT install. Before 325hp/335tq, After 342hp/357tq
    '73 Plain Jane Camaro, Gen III, T56
    '02 WS6, M6
    All gone but not forgotten

  7. #47
    used and abused at wot ibanez7's Avatar
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    1. Flowmaster catback will fhoke out the car on future big mods like headers/cam/heads. Flowmaster sound great but unless you also install a cutout, dont bother. About 9-15 hp, depending on other mods
    I have hooker headers, cutout and flowmaster, great sound and great flow when I open the dump.


    2. Long tube headers SLPs hang low and are not good for lowered cars but you can expect any where from 17 to 30hp depending on other mods.

    3. y pipe only get a y-pipe when you install headers.

    4. LS6 Intake excellent upgrade 10 to 20hp depending on other mods

    5. 80mm Throttle body dont buy, the stock 75mm is good for up to 600hp. Just port your own, and do the bumpstop mod

    6. 85mm MAF sensor some people have problems some dont, I bought one and it worked great!

    7. Lid SLPs lid works great about 12hp

    8. 3.73 gears depends on if you have an A4 or M6, m6 will be a slight notice, A4 you will notice more once you install a stall converter

    What kind of horsepower gains am I looking at?

    for doing a complete intake and exhaust, if planned right and you buy the right parts, I would say 30hp to 60hp with the matching torque, depending on how your computer responds.

  8. #48
    Story of My Life!! BIG D's SS's Avatar
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    Well I have a Flowmaster C/B and when I had it dynoed it really hurt me. I need a better free flowing catback. I love the sound but they are only good for about 280 rwhp and we are well over that.
    3 inch Chambered Catback.

  9. #49
    member since may 2000 nhraformula's Avatar
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    Quote Originally Posted by delinquent543
    define crap?
    reminds me of a garbage truck

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    I accept that flowmaster is not that good in the performance part.

    If I had pace setter Long Tube Headers, pace setter y-pipe, and a 80 series Flowmaster muffler how will sound and perform? Keep in mind that I want to keep the Flowmaster no matter what.
    Last edited by blk_jaws; 12-22-2005 at 04:51 PM.

  11. #51
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    I have that same setup. Personally, I love the way it sounds but of course it doesnt perform as well as other similar setups.

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    Man.. you will love the sound still with your LT Y pipe and a diff. muffler. its a v8 man, with a good exaust system it will always sound good. and if you plan on any other high horse power mods that Flowmaster is gonna hurt you.

  13. #53
    Member blk_jaws's Avatar
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    If I go with the pace setter Long Tube Headers and pace setter y-pipe with just a muffler (no catback) what will I need to do about the catalytic converter?

  14. #54
    Member 01mmmz28's Avatar
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    Quote Originally Posted by bww3588
    thats because you have an '01. 01's have redesigned exhaust manifolds that flow better than 98-00 and your macs dont flow hardly any better than the stock mainfolds. if you did long tubes you would see 60 more hp over stock
    dont even speak, if you dont know what youir talking about. I gained just as much as those w/ LT's, just not as much TQ.

  15. #55
    Member 98ls1blackbird's Avatar
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    If sound is important, you will not be disapaointed with a Hooker cat back system. I have one on a LT1 camaro and the sound is awesome. They flow pretty good too. See ya.
    John

  16. #56
    Don't Listen to Me NE98LS1's Avatar
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    Quote Originally Posted by goose_von
    I accept that flowmaster is not that good in the performance part.

    If I had pace setter Long Tube Headers, pace setter y-pipe, and a 80 series Flowmaster muffler how will sound and perform? Keep in mind that I want to keep the Flowmaster no matter what.
    i believe someone above mentioned cut outs, which is exactly what i'm planning on doing with my 80 series. gotta love the flowmaster sound, and when you go the track, cut outs should be better than almost any exhaust system!

  17. #57
    Member blk_jaws's Avatar
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    I have seen Hedman Hedders around. They make a set for 98-2002 LS1 cars, but I can't seem to find a y pipe to go with it. They sell one to go with the headers but it say's for the catback only. I dont want the catback. Any suggestions

  18. #58
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    Custom y-pipe.

  19. #59
    Member blk_jaws's Avatar
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    can the muffler shop make me one?

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    They should be able to. Ask them.

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