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help

This is a discussion on help within the General Help forums, part of the LSx Technical Help Section category; just installed my headers not to long ago now the car is running like crap. theres no get up and ...

  1. #1
    Member LS1MuNkY's Avatar
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    help

    just installed my headers not to long ago now the car is running like crap. theres no get up and go is it just a tuning thing or im i screwed

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    let the F-Bodies roll jimmybling31's Avatar
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    dunno? is it open headers?

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    let the F-Bodies roll jimmybling31's Avatar
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    did you replace your o2's when you did it?

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    Your dealership guy konigandy6's Avatar
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    More information would be appreciated. What do you mean by drives like crap? Is your engine light on? Did you keep the same cats? Did you hook up all the necessary fittings (egr and air)? Did you pull out a spark plug wire when installing? Did someone pee in your gas tank?

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    Member fxgs's Avatar
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    Quote Originally Posted by konigandy6 View Post
    More information would be appreciated. What do you mean by drives like crap? Is your engine light on? Did you keep the same cats? Did you hook up all the necessary fittings (egr and air)? Did you pull out a spark plug wire when installing? Did someone pee in your gas tank?
    Exhaust leak?

  6. #6
    Senior Member OnEbAdReDSS's Avatar
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    I think he does have the rear o2's deleted... and no tune... most common failure

  7. #7
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by fxgs View Post
    Exhaust leak?
    Well even an exhaust leak wouldn't cause it to run THAT crappy.

    I had my rear O2's hanging out of the exhaust for 2 weeks before I got sims, and my car ran perfect, minus the SES light.

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    Senior Member Too Fast's Avatar
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    Sounds like the plug wires are not on all the way. I have read a few people here after a header install where they have said almos the same thing, denied having a spark plug wire loose, then had to come back on and post several days later that it was indeed a plug wire issue. If it was running fine before the headers, then now it does not, 99.9% chance you did something wrong during the install. After my Hooker LT and ORY, car ran perfect and I have not had it tuned. I do have a Service Engine, but that is because my EGR, AIR and rear O2s are not tuned out. I picked up almost 2 MPG highway.

  9. #9
    Member LS1MuNkY's Avatar
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    Quote Originally Posted by 2000SuperSportMaro View Post
    I think he does have the rear o2's deleted... and no tune... most common failure
    right on the money

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    Veteran 0rion's Avatar
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    no ses light on? A tune could be the culprit but I would also look for burned wires by the headers, it's very very easy to toast a wire on the header. I would also look at the plug wires and make sure none are cracked or melted. Does the car have any hesitation to it or miss? It could be un-related to the headers also. Any other mods on the car and what exactly are your symptoms?

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    Member LS1MuNkY's Avatar
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    ses light is on i didnt see any burnt wires. if i get on it it it has no get up and go lol feels like shit. it just feels slow im taking it to get tuned soon tho and i havent been driving it so i hope thats what it is

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    Member LS1MuNkY's Avatar
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    got a tune and still feels like shit. my guy tells me its the front o2's ive replaced them twice and still nothing. any suggestions. thanx

  13. #13
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by LS1MuNkY View Post
    got a tune and still feels like shit. my guy tells me its the front o2's ive replaced them twice and still nothing. any suggestions. thanx
    Do you still have cats on it? Is the SES light still on?

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    Member fxgs's Avatar
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    Quote Originally Posted by LS1MuNkY View Post
    got a tune and still feels like shit. my guy tells me its the front o2's ive replaced them twice and still nothing. any suggestions. thanx
    What type of tune and who was the tuner(?).................a competent tuner should of been able to diagnose the problem...........

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    Senior Member slims00ls1z28's Avatar
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    Break the water temp sensor or a plug? both of those are common. I broke both on my install and car ran like total shit until I put a scanner and found 100+ misfires on #8. Would be odd that a tuner could not spot either of those though.

  16. #16
    Member LS1MuNkY's Avatar
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    well he spotted two misfires on #3 and #5 which i fixed and he deleted the rear 02's i fixed all that but he said my front 02's werent giving a reading. no cats the ses light is still on

  17. #17
    Your dealership guy konigandy6's Avatar
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    Quote Originally Posted by LS1MuNkY View Post
    well he spotted two misfires on #3 and #5 which i fixed and he deleted the rear 02's i fixed all that but he said my front 02's werent giving a reading. no cats the ses light is still on
    what code is it giving you? Check all plugs and plug wires. If those are good check your coils.

  18. #18
    Senior Member SeVeReDiStOrTiOn's Avatar
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    Quote Originally Posted by LS1MuNkY View Post
    well he spotted two misfires on #3 and #5 which i fixed and he deleted the rear 02's i fixed all that but he said my front 02's werent giving a reading. no cats the ses light is still on
    Have you checked the front o2 harnesses? Might've fried 'em...

  19. #19
    Member fxgs's Avatar
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    Quote Originally Posted by fxgs View Post
    What type of tune and who was the tuner(?).................a competent tuner should of been able to diagnose the problem...........
    Did he ever give a reason as to why he could not get the car running properly and what tuning program did he use?

    When I got my car dyno tuned recently, the tuner spent about three hours on the dyno getting everything dialed in and then we took the car out and drove it on the street, under varying conditions, with the HP Tuner equipment still hooked up, to make sure everything was correct under real driving conditions.

  20. #20
    Member LS1MuNkY's Avatar
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    all he said was the front 02's werent reading i think it might be the harness. he does a street tune. similar to your guy he has me drive while he tunes it from his laptop

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