Quote:
Originally Posted by Emory39
I Know that the 3.0engine on this X are not the best for the weight ratio.
I was planning an intake exhaust and tuning. That’s about how much I was thinking on spending in the X. on the exhaust I am not going to put BMW specific because they want crazy $$$$$. I was thinking of removing the resonator and putting an X-pipe in its place a changing the muffler with others
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In your case the X pipe will change the sound more than anything else. The performance benefit is extraction but I don't think you could measure the difference on a dyno with the lower restriction exhaust. It won't hurt so if you waited until you did the rest of the mods and didn't like the sound you could add it later. The Xpipe tends to raise the octave and make it sound a little raspy. The tune is the key to getting the most out of your plan. Torque gets you going, horsepower keeps you going. Compare HP/TQ curves of available tunes, I think the best choice for 0-60 improvement will be a tune where torque ramps to peak at the lowest rpms. I think your plan is a good value for the results you will achieve.