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LT Myth or not?

This is a discussion on LT Myth or not? within the External Engine forums, part of the LSx Technical Help Section category; Alot of people say their car "feels" slower after installing long tube headers. Is this a myth or do the ...

  1. #1

    LT Myth or not?

    Alot of people say their car "feels" slower after installing long tube headers. Is this a myth or do the LT's really loose a bit of torque down low but raise the power band?

  2. #2
    You've Seen The Butcher GoldenFlame's Avatar
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    Hell no, my car really woke up!.. but then again I had my mail order tune from Frost done at the same time.

  3. #3
    Member DaddysZ28's Avatar
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    I just installed a set of LT's and a true dual exhaust, haven't had my frost tune yet, but my car already pulls alot harder. Go get those LTs............have fun with the install on those too.....lol.

  4. #4
    Yeah I just come accross alot of threads where people are complaining of loosing torque.

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    Quote Originally Posted by GoldenFlame View Post
    Hell no, my car really woke up!.. but then again I had my mail order tune from Frost done at the same time.
    exactly! youll gain as much or more from the tune as the header swap, they work hand in hand. mpg increase , runs cooler, shifts better, all round better driver! Do the lt install and get it tuned. you wont regret it!!

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    BANGIN GEARS>STAB N STEER BLK2KSS's Avatar
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    I wish I could find the person who started this bs rumor and
    LTs are one of the best bang for your buck mods you can do to your car. Some civic driver probably told his v8 friends who didnt know dick about cars this in order to stop him from buying them and raping him even worse!

  7. #7
    Quote Originally Posted by BLK2KSS View Post
    I wish I could find the person who started this bs rumor and
    LTs are one of the best bang for your buck mods you can do to your car. Some civic driver probably told his v8 friends who didnt know dick about cars this in order to stop him from buying them and raping him even worse!
    hahah k cool. glad its not true.

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    Member 02fbody35th's Avatar
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    it is posible to go with too big of a header and in that case you would loose some torque. for a stock to mild modified engine a 1 3/4 header would be best. anything more like a wild cam good flowing heads or bigger cubes i would probably run a 1 7/8 header.

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    Just me Y2KPewterSS's Avatar
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    Myth

  10. #10
    NY Representative basballny2's Avatar
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    i have lts exhaust and cai.....370 rwtq.....i hope that answers ur question

  11. #11
    Visualize°Design°Create SSwt00SS's Avatar
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    you lose some power down low but you make up for it in the mid to high end of the powerband.

  12. #12
    Senior Member tatertot91's Avatar
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    Sunset Orange Metalic
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    My myth is your car sounds louder/meaner and you think it should be going faster than it is but in reality its faster than you started with

  13. #13
    Member Speed_kills_WS6's Avatar
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    I put longtubes on and it freed up some hp, made it sound better, throttle response improved, but really making it faster? Not really...

  14. #14
    Quote Originally Posted by Speed_kills_WS6 View Post
    I put longtubes on and it freed up some hp, made it sound better, throttle response improved, but really making it faster? Not really...
    What do you mean you ran the same times as before the LT's??

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    Member zmg00camaross's Avatar
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    I bought the Texas speed 1 7/8 Headers and felt a good seat of the pants pick up. who cares about low bottom down torque i dont race down there. My mid range is fine and strong and top end is great.

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    Quote Originally Posted by Speed_kills_WS6 View Post
    I put longtubes on and it freed up some hp, made it sound better, throttle response improved, but really making it faster? Not really...
    really? you freed up some hp but didnt make it faster? was is tuned with the header swap? i dont understand

  17. #17
    NY Representative basballny2's Avatar
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    this thread is full of lulz

  18. #18
    Member bryceslu's Avatar
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    Wow.....

    You will gain power throughout the entire rpm range. argument ended.

    The only way that people might think otherwise is if they dont get their car tuned for it. After putting on LT's the car will not run the same as with manifolds. period.
    Most people end up running real rich on a stock tune with LT's.

    And I wish I could find it but at one point I saw 2 dyno graphs of before and after with the torque curve of the post install above that of the pre intstall across the entire range.

    Oh and you will pick up more power, or a higher amount of increase, in the higher rpm range than the lower. this can also contribute to some claims of losing power down low.

  19. #19
    Member Speed_kills_WS6's Avatar
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    My 1/8th E.T. didn't change after long tube install. I did notice a 1 mph difference in speed. Tuning freed up 6 hp. My fastest time ever is still with the stock manifolds & street radials.

  20. #20
    Quote Originally Posted by Speed_kills_WS6 View Post
    My 1/8th E.T. didn't change after long tube install. I did notice a 1 mph difference in speed. Tuning freed up 6 hp. My fastest time ever is still with the stock manifolds & street radials.
    hmmm thats strange

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