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Tuning / Diagnostics -- engine and transmission Tune and diagnostics for engines and auto transmission.

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Old 09-18-2012, 06:27 PM   #1
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Need a tune or not

Hey guys, I currently only have a Borla S-type on my L99 and am thinking about switching. I am thinking about putting on the Kooks full racing system which is full system with LT and no cats. I also just bought a Vararam No-tune. I think that is all I am going to do to the car but I was wondering if I would need to tune it for this? I know if I do tune I would get more power and everything else but the car has under 10k miles and I would like to hold onto the warranty.

I know the ECM can handle some more flow but at what point is it too much and it going to run too lean? Any thoughts or opinions would be appreciated.
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Old 09-18-2012, 06:44 PM   #2
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Hey guys, I currently only have a Borla S-type on my L99 and am thinking about switching. I am thinking about putting on the Kooks full racing system which is full system with LT and no cats. I also just bought a Vararam No-tune. I think that is all I am going to do to the car but I was wondering if I would need to tune it for this? I know if I do tune I would get more power and everything else but the car has under 10k miles and I would like to hold onto the warranty.

I know the ECM can handle some more flow but at what point is it too much and it going to run too lean? Any thoughts or opinions would be appreciated.


Without a tune you will get a cel at somepoint. Also, without a tune you'll be leaving some rwhp on the table with the headers. I don't think it's gonna run to lean. Just the light and less power. How much I can't tell you.
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Old 09-18-2012, 06:48 PM   #3
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Is there a way to keep the CEL from coming on?
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Old 09-18-2012, 06:50 PM   #4
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Is there a way to keep the CEL from coming on?
Nope. At least not to my knowledge. If you ever find one you'll be everyone's favorite C5 member.
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Old 09-18-2012, 08:27 PM   #5
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Like SSS said,
It will be a matter of time before you throw a check engine light. That's more of a PITA of having to reset it, than an overal performance issue. You're going to have a pretty loud car with the borla's and headers and some real nice drone when your car drops to DoD mode.

You added about $2500 in bolt ons for more performance, the tune is only $300 more which will greatly enhance your modifications.

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Old 09-19-2012, 12:02 AM   #6
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It is not the price of the tune that bothers me. It is the loss of warranty. I haven't had the car that long and bought it used. I want to wait like 10k miles before I void my warranty to make sure th car is solid.

I know a lot about ECMs and communication protocols including CAN, which is what vehicles use. I'm trying to figure out a way to modify the ECM without voiding the warranty. I have a couple ideas but I need to test them out on a different ECM first.
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Old 09-19-2012, 12:44 AM   #7
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It is not the price of the tune that bothers me. It is the loss of warranty. I haven't had the car that long and bought it used. I want to wait like 10k miles before I void my warranty to make sure th car is solid.

I know a lot about ECMs and communication protocols including CAN, which is what vehicles use. I'm trying to figure out a way to modify the ECM without voiding the warranty. I have a couple ideas but I need to test them out on a different ECM first.
Long tubes mean you touch the emissions equipment which in theory will have already voided the warranty. Technically. The warranty deal is a whole other debate.:

The ECM flash counter will catch you as soon as you make a single change. You're busted right there.
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Old 09-19-2012, 01:12 AM   #8
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Definitely get the tune, you want all the rwhp, my warranty was gone with less than 100 miles when my SS went right to Jannettys and it was all well worth it
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Old 09-26-2012, 07:05 PM   #9
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Long tubes mean you touch the emissions equipment which in theory will have already voided the warranty. Technically. The warranty deal is a whole other debate.:

The ECM flash counter will catch you as soon as you make a single change. You're busted right there.
My understanding is that the Camaro does not have a counter. If GM were to pull the tune they can verify the checksum of that tune and tell if it is a stock flash or not, but they do not count each time a tune is uploaded to the car.
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Old 09-27-2012, 11:20 AM   #10
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There's a chance you will throw a p0068 (map/maf correlation code) flowing that much air with the stock tune, possibly some lean fuel trim codes, and the catalyst efficiency codes. I would bolt them on and give it a try. The only code that would really bother me would be the p0068. If your car throws this code you WILL know it. Not only does it kick the cel on but it puts the car in reduced engine power mode, but it doesn't damage anything.

May want to wait for a few more professional tuners to chime in. But I don't see how it could hurt anything leaving the stock tune file on it, as sensitive as these knock sensors are you shouldn't have to worry about engine damage due to lean conditions.

Again, I'm not a pro at tuning so you may want to ask some people who do this stuff for a living.
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Old 09-27-2012, 12:18 PM   #11
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IPF Tuning has a Tune for your Car with your mods and it does not affect the Warranty, it's undetected.

Let me know if you are interested and I will hook you up!

Thanks,

Jesse!
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Old 09-27-2012, 12:21 PM   #12
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IPF Tuning has a Tune for your Car with your mods and it does not affect the Warranty, it's undetected.

Let me know if you are interested and I will hook you up!

Thanks,

Jesse!
How do you get around the flash counter?
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Old 09-27-2012, 01:16 PM   #13
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IPF Tuning has a Tune for your Car with your mods and it does not affect the Warranty, it's undetected.

Let me know if you are interested and I will hook you up!

Thanks,

Jesse!
Are you guys willing to guarantee that your tune is undetectable by GM?
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Old 10-01-2012, 04:50 PM   #14
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Are you guys willing to guarantee that your tune is undetectable by GM?
Apparently not haha...
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*1998 Chevrolet K1500, 6' superlift, 35' pro-comp tires, cammed 355ci with forged internals, 4.56 gears, eaton locker, k&n cold air intake, shortie headers, custom tune with Hp tuning software. SOON TO BE TRADED IN TO A 2014 GMC SIERRA!
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Old 10-01-2012, 06:04 PM   #15
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Wow.to make a claim like that and can't back it up,makes me wonder about ur products.
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Old 10-01-2012, 07:02 PM   #16
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Originally Posted by IPF-Tuning View Post
IPF Tuning has a Tune for your Car with your mods and it does not affect the Warranty, it's undetected.

Let me know if you are interested and I will hook you up!

Thanks,

Jesse!
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Old 10-02-2012, 11:53 AM   #17
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Maybe he's talking about one of these

Name:  ImageUploadedByTapatalk1349196784.544372.jpg
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*2010 1SS, hennessey cold air intake, SW long tubes, catless midpipes, flowmaster catback, 3.91's, trailing arms, custom tune with HP tuning software. 12.144 @ 114MPH

*1998 Chevrolet K1500, 6' superlift, 35' pro-comp tires, cammed 355ci with forged internals, 4.56 gears, eaton locker, k&n cold air intake, shortie headers, custom tune with Hp tuning software. SOON TO BE TRADED IN TO A 2014 GMC SIERRA!
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