tune or no tune?

[jj1010]

Have a 2026 supra 3.0 with 4k miles. Bought it new originally from a dealer thats offering lifetime powertrain warrenty with no grey lines. As long as oil change is done by recomended intervals I get the full lifetime powertrain warrenty. Currently have only bolt ons (which I already called and verified won't void warrenty). AA catted GESI DP, Dinan CAI, Dinan Catback exhuast. Wondering if I should part these out and go with catless DP and stock exhuast for a potential tune . Car sounds great as is. Also wondering what a stock exhuast and catless DP would sound like along with a tune.

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[jmikes]

any kind of tuning, even through a piggyback like JB4, can be detected when the car is serviced and thus could void powertrain warranties. Just worth keeping that in mind before you tune. This includes if you flash the ECU to stock settings or remove the piggyback, they can still see that the ECU and its settings were tampered with.

This video compares most combos of exhausts/downpipes; 8:37 seems to be where some catless DP + stock exhaust clips come in. That's what I run and it sound good to me, though I wish the exhaust was a little bit louder because I can't hear the car at all when highway cruising unless I full throttle at a decent RPM.


Intake and Exhaust does not matter at all for tunes unless you're chasing huge horsepower on an upgraded turbo, so I wouldn't bother going back to stock exhaust unless you prefer the tone or want something possibly quieter. Catless DP will add more power than catted, but not an overwhelming amount more.

 

[omfgzilla]

If you are worried about warranty........... you've bought the wrong platform.

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