JB4 vs Unlocked Tune

[_Sp1ral0ut]

I thought by buying a Supra we were all hard-core street racers

I do have a small RocketMan sticker (Fast and Furious orange Supra decal) on my side window. Pretty sure that alone makes me a hard core street racer.

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[Jakester]

I do have a small RocketMan sticker (Fast and Furious orange Supra decal) on my side window. Pretty sure that alone makes me a hard core street racer.

Yes orange sticker is certified street racer approved!

 

[Mr. Jonathan]

Will a JB4 help eliminate a what I assume is an exhaust back pressure issue from a cattless DP and cat-back exhaust or is this only related to the Bolt-on components? My supra vibrates crazy load and runs a little inconsistent (best why I know how to describe) during the factory cold start cycle. Or, do I just need to disable the cold start via Bimmercode (if I can?) all together.

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