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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Technical Forums > Tracking, Autocrossing, Dragstrip, Driving Techniques > Road Atlanta 12/1



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      12-03-2017, 09:41 AM   #1
E30_335i
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Road Atlanta 12/1

Friday at Road Atlanta and a new personal best. Dropped 2.4 seconds with my new Drexel LSD over the Wavetrac.



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2011 335i Sport, M3 control arms front/rear, ECS Tuning rear trailing arms, Bilstein HD's, StopTech BBK, Drexel LSD, Dinan camber plates, FBO's with Cobb Stage 2 tune, Corsa exhaust, 18x9 D-Force, 255/35 R-S4's
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Last edited by E30_335i; 12-03-2017 at 09:57 AM.
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      12-04-2017, 06:17 PM   #2
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Do you attribute the time difference solely to the LSD swap? Not a passive aggressive question, I have no idea about the details of your lap times (years apart, other changes, whatever). Just struck me that changing LSDs would give literally seconds.
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      12-04-2017, 09:18 PM   #3
E30_335i
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Originally Posted by r4dr View Post
Do you attribute the time difference solely to the LSD swap? Not a passive aggressive question, I have no idea about the details of your lap times (years apart, other changes, whatever). Just struck me that changing LSDs would give literally seconds.
My last trip there was in March. The Wavetrac never did what I thought it should. There was only a .5 sec difference between OEM open and the Wavetrac, no other changes. I could not get the power down any different coming out of several turns. Randy Probst said the same thing with the unit installed in his 740 Volvo, his is one wheel peel mostly. So the new LSD was the difference. I was able to carry more speed, and get the power down much earlier.
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https://c1.staticflickr.com/8/7348/27630930216_573ce3d512_m.jpg
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      12-05-2017, 02:34 PM   #4
r4dr
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Quote:
Originally Posted by E30_335i View Post
My last trip there was in March. The Wavetrac never did what I thought it should. There was only a .5 sec difference between OEM open and the Wavetrac, no other changes. I could not get the power down any different coming out of several turns. Randy Probst said the same thing with the unit installed in his 740 Volvo, his is one wheel peel mostly. So the new LSD was the difference. I was able to carry more speed, and get the power down much earlier.
Interesting... thanks for the info. I would have thought all LSDs were within a stone's throw of each other, but that's clearly not the case.

Did you look at other brands before you landed on Drexel?
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      12-12-2017, 10:47 PM   #5
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Nice driving! Hitting every apex
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      12-16-2017, 10:07 PM   #6
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Really making us northerners jealous with an early December track day!! Super jealous!
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      12-18-2017, 11:47 AM   #7
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Really making us northerners jealous with an early December track day!! Super jealous!
What is the towing capacity on that x5? Let me get you a trailer
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      12-18-2017, 03:04 PM   #8
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What is the towing capacity on that x5? Let me get you a trailer
I believe 6k lbs? I have a hitch, so she's ready for tow duty. Now the only thing missing is a finished track car... just a minor detail though
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      12-18-2017, 03:07 PM   #9
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I believe 6k lbs? I have a hitch, so she's ready for tow duty. Now the only thing missing is a finished track car... just a minor detail though
Mine is ready. I just need to remove the baby seat. Let's go.
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