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Question about a tune after some mods

Posted: Sat May 20, 2017 9:03 pm
by bluethunder
I plan to rebuild my L77 later in the year, but for now would like to add a CAI and a axle back muffler
(Solo) system. Does it need a retune with those two items?? I hate to dump money into a short lived set-up as like I say the motor will be redone without the DOD set-up later this year.

Thanks

Re: Question about a tune after some mods

Posted: Sat May 20, 2017 10:05 pm
by Silversled
You will not need a tune for the axle back since everything that changes is downstream of the second O2 sensor. The CAI will most likely need a tune. Some people have gotten lucky but generally CAI's will throw a MIL.

Re: Question about a tune after some mods

Posted: Sun May 21, 2017 7:34 am
by indianajoe
you shouldn't need a tune for a CAi. I've had two and never had a problem

Re: Question about a tune after some mods

Posted: Sun May 21, 2017 8:26 am
by Silversled
indianajoe wrote:you shouldn't need a tune for a CAi. I've had two and never had a problem
indianajoe,
Have you logged fuel trims on your car after installation of a CAI and what types have you installed? Just wondering. I've seen a mixed bag and it depends on the design of the CAI and style.

Re: Question about a tune after some mods

Posted: Sun May 21, 2017 9:24 pm
by indianajoe
havent done any datalogging, but I've had a vararam and vcm otr intakes and it didn't throw a code