I just installed a 4.10LSD a few weeks ago in my 325is.
I love it. The car is so much more fun to drive. I think i get better gas mileage around town, probably because it takes less effort to accelerate (ie don't have to push as hard on the gas to get moving).
It revs higher on the highway. The extra engine speed/sound would only start to get annoying if you drive at 90mph all the time. 70-75mph is perfectly fine to me. I don't really notice any difference in highway gas mileage. Infact it accelerates up hills more effortlessly which probably uses less gas.
The only reason i would not do this mod is if I did more then 50% of my driving on the highway at higher then 75mph for more then 30mins at a time.
I love it. The car is so much more fun to drive. I think i get better gas mileage around town, probably because it takes less effort to accelerate (ie don't have to push as hard on the gas to get moving).
It revs higher on the highway. The extra engine speed/sound would only start to get annoying if you drive at 90mph all the time. 70-75mph is perfectly fine to me. I don't really notice any difference in highway gas mileage. Infact it accelerates up hills more effortlessly which probably uses less gas.
The only reason i would not do this mod is if I did more then 50% of my driving on the highway at higher then 75mph for more then 30mins at a time.
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