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3SI Upgrade Experience
Hey folks,
I did my 3SI upgrade over the holidays and I wanted to check in on experiences that people have had with doing this upgrade. I used BMW genuine DISA valves with the MSV80_S8608441_x28i_to_x30i_NoMAF.0da tune from bimmer labs. I have a 6 speed, non-SULEV.
Now I've read varying HP upgrade amounts with 20 on the low end and 40 on the high end, with most people/places claiming 30-40 (not sure why there would be a range here).
I do feel that the car has slightly more torque, but I'm not sure I'm experiencing 30hp-40hp more. I would think I'd feel it even if it was 20hp more and I wouldn't have to be questioning am I feeling it.
Can folks who have performed this upgrade chime in?
Thank you!
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