high rpms...help!

[white325i]

so my 92 325i in 5th gear doing 55 my rpms are at 3200...now that seems pretty high or is that how the car is suppose to be, done to it is chip, m3 exhaust, and intake...also i noticed when it idles, it idles around 500-600 rpms and it feels like its cammed but when i go to go it doesnt stutter or bog or anything its smooth, whats could cause the high rpms and the 500-600 idle

aslo a guy from bimmer forums said "Wrong diff ... sounds like you might have a 3.91 (from an automatic car) instead of the 3.15 it's supposed to have ..."

whatdo you guys think?

[witeshark]

I think they may well be right.

[white325i]

really? damn....

[white325i]

where can i get a differential? like what websites?

[witeshark]

On this search I'm not ahead of you at all. But I'd have a look at local pick and pull breaker yards.

[johnnyBgood]

BMW 325i E36 limited slip differential 3.15 lsd M3 : eBay Motors (item 220601023348 end time May-12-10 19:55:09 PDT)


BMW DRIVETRAIN Differential

[white325i]

ok so..today, i was driving and doing 55 in 5th it was around 2900-3000 rpms, maybe i was wrong ebfore didnt really pay attention but isnt that still a little high?

[BumbleBimmer]

maybe try uninstalling the chip, sometimes these alter your rev

[theluis]

i have a 95 325i with a manual and my 65 mph is around 2900 sooo i would tell what kind of diff i have but i dont know where it says

[Torque]

Originally Posted by BumbleBimmer

maybe try uninstalling the chip, sometimes these alter your rev

Please don't post things like that; it just misleads people.

A chip can not affect how high the car is revving while being driven -- it is purely gearing.

[theluis]

your not telling me are you?????
i didnt say crap about chips

[Torque]

Originally Posted by theluis

your not telling me are you?????
i didnt say crap about chips

No, I was talking to the guy whose post I quoted.

[theluis]

oo sorry

[k.sidlosky]

Wow, what happened to all the nice people? I would look into a different differential. Maybe the stock one got swapped out for a limited slip. Lucky you have half shafts and don't have to get a whole rear end.

[ncktuley1]

look around on craigslist for parts cars. you would be surprised for what comes up on the e36. but it does sound like you have a different differential?