help

[LS1MuNkY]

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

[jimmybling31]

dunno? is it open headers?

[jimmybling31]

did you replace your o2's when you did it?

[konigandy6]

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?

[fxgs]

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?

[OnEbAdReDSS]

I think he does have the rear o2's deleted... and no tune... most common failure

[konigandy6]

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.

[Too Fast]

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.

[LS1MuNkY]

I think he does have the rear o2's deleted... and no tune... most common failure

right on the money

[0rion]

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?

[LS1MuNkY]

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

[LS1MuNkY]

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

[konigandy6]

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?

[fxgs]

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...........

[slims00ls1z28]

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.

[LS1MuNkY]

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

[konigandy6]

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.

[SeVeReDiStOrTiOn]

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...

[fxgs]

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.

[LS1MuNkY]

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