Should I bother with another tune?

[Obsol3te]

It only took me about 500 miles to actually go and get a programmer for my '15 GT PP M6, and it was a noteable increase. Ended up going from 386whp 356wtq to 403whp 369wtq. Picked up over 20whp in the middle as well. It really perked the car up. I just recently installed my Magnaflow Competition Cat-back and im curious if I should bother getting the thing tuned again if it would at all need it. Using the SCT X4 programmer.

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[GrabberBlue5.0]

No, a catback exhaust does not require a new tune


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[Grimace427]

No you do not need a tune for a cat back exhaust as mentioned. While you said what kind of tuning device you are using, you never mentioned who actually wrote the tune.

 

[Obsol3te]

Local tuner in NC had tuned the car when it was completely stock

 

[Vile_the_Bastage]

Nope, but if you change out that stock air box or add headers (mainly catless systems) then you should get another tune.

 

[LethalPerformance]

As others mentioned a catback doesn't require a tune update. However if you're using the canned file from SCT you would definitely benefit by going with a custom tune from Lund Racing.

We picked up peak-to-peak gains of 26.7 horsepower and 24.93 lb-ft of torque. That was a while ago as well. The tunes have since evolved and should yield slightly higher gains now.

Give us a call if you have any questions and we'll be glad to assist you.

Thanks, Jared

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