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Old 06-19-2009, 09:57 AM   #1
dbworld4k
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Any 5spd owners with a 3.38 or 3.46 diff?

Anyone with the above setup, how is your fuel economy during highway driving - do you find the revs to be very high @ 120km/h? Most importantly, do you regret doing this diff swap in your daily driven E46?
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Old 06-19-2009, 10:50 AM   #2
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i got a 3.38 on order right now...
I'll put a post about my thoughts on it after i get it installed.. maybe 2 weeks from now..
muhaha
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Old 06-19-2009, 10:52 AM   #3
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i dont think my gas will be too bad..
i usually do 130 at 3500.. i do about 50 kms of highway a day and the rest city..
i get about 600-630 km a tank..
if it drops down to 560-590 i wont care much at all..
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Old 06-19-2009, 10:59 AM   #4
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It's not so much the gas mileage I'm worried about - hell I only avg like 550/tank right now - it's more of keeping the motor at ~3500 RPM constantly on the highway.
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Old 06-19-2009, 11:54 AM   #5
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I have a 4.10 LSD and I'm swapping it for a 3.25 LSD for my S52 swap. I can't wait.
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Old 06-19-2009, 02:40 PM   #6
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got a 3.46

hey anu I got a quaife 3.46 LSD in my car and wow with boost does this make your car fun to drive (to bad I havent driven my car in 3 weeks and not untill next friday, took my body shop 1 full month to do my paint job but ill post pics up next weekend woohoo) on topic again anu get a 3.46 ratio diff but if its not a LSD it wont be nearly as fun... cant wait to track my slut!
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Old 06-19-2009, 03:05 PM   #7
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I'm going to my other 2.79 LSD, good economy days are coming!
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Old 06-19-2009, 09:45 PM   #8
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3.46 and 5 spd. No issues at all with economy or highway revs.
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Old 06-20-2009, 01:17 AM   #9
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Get a 3.62LSD .
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Old 06-20-2009, 02:30 AM   #10
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Mike: that is a terrible, terrible idea!
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Old 06-20-2009, 08:36 AM   #11
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^ really? Then throw a 6speed in it to offset it.
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Old 06-25-2009, 09:53 PM   #12
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what rpm's do you guys sit at 120? i sit at 3000rpm, and that seems a bit high no?
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Old 06-25-2009, 10:06 PM   #13
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Got a 4.27 lsd and still hitting 600km on a tank
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Old 08-13-2009, 10:02 PM   #14
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got the 3.38 in there.
at 120 i'm at about 3350-3400rpm.

i'm happy with the diff.
good difference for the cost
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