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Camaro V8 LS3 / L99 Engine, Exhaust, and Bolt-Ons Bolt-Ons | Intakes | Exhaust

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Old 01-02-2012, 05:26 PM   #1
cslee0811
 
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I WANT THE TRUTH!!!

hello everyone! just wondering if any body actually installed LT headers and never got a tune... i know that it really isnt effective especially without a tune... but i know there are some out there that never got a tune... and if you didnt, was there even a significant difference in performance?
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Old 01-02-2012, 05:33 PM   #2
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Besides leaving considerable power on the table you will also get a CEL either immediately or eventually. My advice is to not get headers without a tune and do not get a tune until you are ready to kiss your warranty goodbye. Do these kinds of things properly and you will save yourself a lot of headaches and be much happier with the results.
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Old 01-02-2012, 05:35 PM   #3
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Lets say I have YET to get a tune. I have LTs and HFCs. I now have a bit of a flat spot during hard accelleration and near constant Check Engine Light (CEL) for the lack of effeciency of the High Flow Cats. I have to clear the code about weekly. Could the flat spot indicate a lean condition? It feels like its lean. The thing sounds so much better its unreal. I am close to ordering a tune from Jannetty.
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Old 01-02-2012, 05:37 PM   #4
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dont cheap out on a 35,000 dollar car. just not worth it. LTs and tunes go hand in hand.
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Old 01-02-2012, 05:47 PM   #5
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dont cheap out on a 35,000 dollar car. just not worth it. LTs and tunes go hand in hand.
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Old 01-02-2012, 05:53 PM   #6
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I'll answer your question if no body else will. Yes they have... and yes they had nice power gains.

Edit: and here's a post for you... http://www.camaro5.com/forums/showpo...&postcount=496
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Old 01-02-2012, 05:54 PM   #7
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"YOU CAN'T HANDLE THE TRUTH!"

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Old 01-02-2012, 06:03 PM   #8
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Get a tune.
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Old 01-02-2012, 06:03 PM   #9
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I drove my 2005 GTO for 5 years with AR long tube headers and no tune. Only time a tuner touched my car was to shut the 02's off that flagged my CEL to come on. Never put it on a dyno, and never had any issues. I just wanted it more for the exhaust note and really couldn't care less for performance. With that said I can tell you that the Camaro is fully tuned. And yes, it makes one hell of a difference!
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Old 01-02-2012, 06:12 PM   #10
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Old 01-02-2012, 06:19 PM   #11
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yes people have... no it is not recomended
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Old 01-02-2012, 06:35 PM   #12
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Get a tune.
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Old 01-02-2012, 07:26 PM   #13
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I didn't tune my car when I installed headers. The reason being I was going to do more upgrades and then do one all-inclusive tune. The headers alone woke the car up. I cannot imagine what a tune would have added but it would have been spectacular. My CEL came on the day after I put them on and stayed on until dismantled the car.
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Old 01-02-2012, 07:47 PM   #14
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I had a before and after check once my headers and cats were installed. For me my power and torque didn't change much. The only thing that needed minor tweaking was my timing due to some knocking. I know with my setup a tune wasn't necessary for more power, but definitely to eliminate the knocking issue.
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Old 01-02-2012, 07:57 PM   #15
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I had my headers on for 2 months before I got a tune. With long tubes ONLY it went 12.8x at the track.
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Old 01-02-2012, 10:00 PM   #16
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Been running my LT's untuned for 5-6 months now. Made a big difference from stock even without a tune. I do have a CEL which came on 3-4 days after I installed the headers. I'm considering getting it tuned soon since I just added a ported TB, but we'll see. Aside from smelling rich at idle, it runs fine.
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Old 01-02-2012, 10:03 PM   #17
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"YOU CAN'T HANDLE THE TRUTH!"

Sorry but I couldn't resist.
Nor could I.

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Old 01-02-2012, 10:07 PM   #18
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Nor could I.

you all beat me to it, thought of it as soon as i seen the title....
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Old 01-02-2012, 11:40 PM   #19
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I have longtubes with highflow cats, no tune, no engine light. I can feel a power difference for shure. I used o2 extension pipes to fool the ecm into thinking the cats are working, ben that way for 9 months and it just passed an obd2 inspection. There is no garantee my engine light won't come on tomorrow but for now, untill I want to void my warranty it works.
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Old 01-03-2012, 01:40 AM   #20
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HAHAHAHAHA had it coming...
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Old 01-03-2012, 01:09 PM   #21
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Quote:
Originally Posted by greenmachinedriver View Post
I have longtubes with highflow cats, no tune, no engine light. I can feel a power difference for shure. I used o2 extension pipes to fool the ecm into thinking the cats are working, ben that way for 9 months and it just passed an obd2 inspection. There is no garantee my engine light won't come on tomorrow but for now, untill I want to void my warranty it works.
Too Late

Truth is if you show up at a dealer with your mods and you broke a drivetrain part they will deny you warranty if they believe it is at all related to the extra power.

I suspect the OP has other mods besides the LT headers, I could be wrong, but the Flat spot could indeed be a lean tip in condition.

Ted.
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Old 01-03-2012, 01:28 PM   #22
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I have stainless works long tubes and high flow cats but they were on the car when i bought it. I get a check engine light occassionally (so i assume that means the car isnt tuned). Car seems fine. very powerful.
Just wondering though. If i tuned the car, would i be able to pick up some MPG that im losing somewhere because i have no tune for the headers and such?
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Old 01-03-2012, 01:34 PM   #23
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I have the Kooks LTs high flow cats and a 3" cat back.... got tired of it feeling a little sluggish mid rpm range in 3rd and 4th. Not to mention the CEL... dropped it off for a tune today....
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Old 01-03-2012, 01:57 PM   #24
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No tune yet. It's been a month or so. Installed the LT's in the driveway and just haven't had time to tune with the holidays. Likely will this month though. I'm definitely tired of the CEL.

I still can't make up my mind between a JRE remote tune and a local shop, though.
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Old 01-03-2012, 02:07 PM   #25
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No tune yet. It's been a month or so. Installed the LT's in the driveway and just haven't had time to tune with the holidays. Likely will this month though. I'm definitely tired of the CEL.

I still can't make up my mind between a JRE remote tune and a local shop, though.
How about if I offer you a Money Back Guarantee
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