2018 year of the drivetrain?

dyezak

Major
May 4, 2017
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Plano TX
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335is
People have been making silly power on the N54 platform for years. That's nothing new. 700, 800, 900hp is no shocker. The thing that has gotten very little attention until last year was the drive train. Putting that power down and using it effectively. I think AD and xHP both have gotten the ball rolling last year. AD has some bugs to work out on their 4l kit and xHP basically allowed the 6at to be useful.

This year MHD is bringing out their shift bog elimination and on the DCT side there's some interesting things cooking. I'm really interested to see where this goes.

Even a 3600lb car at 700hp, if you are able to cut a 1.4sec 60ft and shift decently you have a 9sec car. Not to mention if you have more hp than that or less weight. But when you have a 6at that takes .4sec to shift (with xHP stage 3) and you need to go through 3 shifts to complete a 1/4mi you have lost 1.2sec of acceleration time right there! Or the 6mt bogging after every shift...

I think enough smart people have turned their gaze over to the drive train that we will see some interesting things soon.
 
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N54QC

Corporal
Aug 17, 2017
127
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07 E90 335i
I hope this year shows some promising stuff. Amazing how much time and money is put into this platform and 9's haven't happened. The closest cars are with powerglide's and that's not realistic compromise for most people.
 

amik

Lurker
Apr 8, 2018
14
15
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2007 E92 335i
Agree that the demand is present. Whoever gets to market with a reliable solution for big power on the 6AT stands to make a lot of money. Some of it mine.
 
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Brule

Corporal
Feb 20, 2017
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335i 2007 6spd manual
Why do people still have shift bog?
Had none since 2014 on cobb ap and past 2 years on mhd.
 
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blisstik

Corporal
Mar 27, 2018
151
64
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E92 MOTIV750 (Sold)
This year MHD is bringing out their shift bog elimination

I'm out of the loop on this. Currently, MHD has a shift bog "fix" checkbox prior to flashing. Is this the same thing or there's a new-ish fix?
 

jyamona

Captain
Platinum Vendor
Nov 7, 2016
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Philly
I'm out of the loop on this. Currently, MHD has a shift bog "fix" checkbox prior to flashing. Is this the same thing or there's a new-ish fix?

The current one only seemed to mitigate it for lower powered cars. It was more of a temporary mask to the problem rather than the be all/end all cure. It will be replaced with that cure.
 
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blisstik

Corporal
Mar 27, 2018
151
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E92 MOTIV750 (Sold)
Thanks Jake. Now back to the thread... anyways what are the options for drive shafts and axles these days? DSS or some other brands?
 

bahn

Corporal
Platinum Vendor
Nov 5, 2016
207
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Iowa
It should be a very exciting year for us indeed. @jyamona is really pushing this platform forward from the DME side with the upcoming shift bog fix and hopefully 2 step. IMO suspension is the big time killer at the strip, we think of BMW's as very well handling cars. Well handling circuit cars generally have stiffer shocks, higher spring rates, lower ride heights and are rigid. Time to swap the IRS out for a solid axle, ditch the low profile tires and 19" rims for some 16-17" rims with some tires with a sidewall and get some softer shocks and possibly springs to help with weight transfer to the rear.
 

blisstik

Corporal
Mar 27, 2018
151
64
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E92 MOTIV750 (Sold)
Time to swap the IRS out for a solid axle, ditch the low profile tires and 19" rims for some 16-17" rims with some tires with a sidewall and get some softer shocks and possibly springs to help with weight transfer to the rear.

AKA the Mustang mod
 

JBacon335

Corporal
Nov 7, 2016
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Toms River, NJ
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07 335i Sedan, 1988 Mustang GT
Ford 9" and a 4 link would really change these things off the line but then it wouldn't really be as nice around town or in the twisties