96 HDJ81 HDFT car runs smooth when cold shutters between 1800 and 2000 rpm when warm. (1 Viewer)

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I don’t want to mess with the engine at all. I just want it to run smoothly. It has enough power for my needs

Leave the exhaust as it is then.

If you want a bit more power, 3" exhaust and a tweak of the turbo wastegate and fuel pump can improve performance.
It can also lower EGTs and improve efficiency, which helps it last longer.
 
Leave the exhaust as it is then.

If you want a bit more power, 3" exhaust and a tweak of the turbo wastegate and fuel pump can improve performance.
It can also lower EGTs and improve efficiency, which helps it last longer.
Great advice, thanks a lot. I've saved it, and when the time comes to make changes, that's what I'll refer to.
 

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