[Eat.Sleep.Race]

Nice!!!!

[musc]

Pretty good 1/4 trap for your 1/8 trap being that low.

[BQTuning]

As I mentioned before I prematurely failed something in the driveline when launching the car at the track.

I brought the car in to have the driveline checked at my dedicate shop Foreign Affairs Motorsports to see where the clanking sound was coming from. The tech drove the car felt the vibration but didnt here the clanking sound.

So I asked him, did you turn the Sport button on, he looks at me and says no. I at him and said well that is why, you were in baby mode

So we agreed to take the car out one more time to see if we could produce the sound. I said to him, do you guys know if a driveshaft is available before we do this, cause I think if I go WOT again im going to break something, so no one knew if the part was available and I was getting impatient staying there.

I said oh what the hell if its going to break let it break now while im near the shop. The tech jumps in and he asked how much you putting down, I said Im putting out 550 wtq. He kinda had that look like "yea right" cause one of the shop managers has the same car.

I put the car in Sport On, and one press of the TC button also while in M-Mode. Highway comes up no cars were on the Guadalupe Express Way , I said, your ready, hes said yea, and I said ok here we go.

First WOT no clanking , and no vibration so I am like wtf while homes has a grip lock on the oh shnit bars trying to figure out what just happened.

I said one more time, this time he really holds on tight, car squats deep in the rear and front end just lift up until we hit 5k RPM I felt something disconnect , and an immediate loss of power and I immediately let go of the gass pedal

Something broke for sure, pulled over to the side and heard a turning grinding sound, that sound I knew very well, and that sound was I perm broke something in the driveshaft.

Car wouldnt move, and just heard something spining,a nd said nope time for towe truck....lol it was two blocks away. Two blocks away here in florida can make up more than a mile

We got back to the shop and sure enough the driveshaft broke in the same exact place like the last 2 times prior. The DS connection input to the differential broke





New driveshaft was ordered which is coming from Germany that will be here within 7 business days. Yup that one visit to the track ended with a premature RIP for my DS

Doing rolls is fine, Ive done 30-40 rolls no issues during all my R&D and races with other bimmer. Its just this one time at the track is what ended it all, and then I just added more fuel to the fire today

Hijacking the wife's Mini Cooper for a week till the Q is back up and running again for more dyno runs.

[nyt]

Why don't you get a proper driveshaft built?

[BQTuning]

Originally Posted by nyt

Why don't you get a proper driveshaft built?

A CF DS from DSS in the planings along with VAC's LSD pumpkin for DCT cars and DSS halfshafts. Its best that I did it this way so others can be aware of the limitations of the driveline on this car since it has no torque converter like the 6AT cars do

[335xiRT1]

Is this tune that much of a upgrade coming from JB4 + bb flash with FbO running e70.
And driving a manual or is it mostly for DCT guys.

Debating if I should pick up a cobb and try this out.

[WedgePerformance]

Originally Posted by 335xiRT1

Is this tune that much of a upgrade coming from JB4 + bb flash with FbO running e70.
And driving a manual or is it mostly for DCT guys.

Debating if I should pick up a cobb and try this out.

Although everyone who has tried the flash has indicated it has more power. Every car is different and you would need to experience it yourself. MT, AT or DCT, doesn't matter.

[dx1541]

Originally Posted by BuraQ

A CF DS from DSS in the planings along with VAC's LSD pumpkin for DCT cars and DSS halfshafts. Its best that I did it this way so others can be aware of the limitations of the driveline on this car since it has no torque converter like the 6AT cars do

Hi dimitri

Is your whp at 426 being something that is not able to go up with relation to your very high torque or ? Care to elaborate here. Trying to understand more here cause it seems that you could easily make way more than that.

Thanks

Dixon

[musc]

I am kind of a glad I haven't hooked well at he track. These driveshafts are definitely a weak point with a hard launch.

Originally Posted by dx1541

Hi dimitri

Is your whp at 426 being something that is not able to go up with relation to your very high torque or ? Care to elaborate here. Trying to understand more here cause it seems that you could easily make way more than that.

Thanks

Dixon

I am pretty sure he was on a Mustang dyno which read low hp compared to the dynojet. Even on the mustang dyno I think he could hit high 430s/low 440 with a 5th gear pull which is more optimal for DCT cars.

[BQTuning]

Originally Posted by dx1541

Hi dimitri

Is your whp at 426 being something that is not able to go up with relation to your very high torque or ? Care to elaborate here. Trying to understand more here cause it seems that you could easily make way more than that.

Thanks

Dixon

It may be dyno related since I was on a Mustang dyno with default settings. I have added more power from since those dyno numbers, I might have to venture out when I get the car back for a DJ that has adequate fans with good air flow

[marconi118]

Maybe a swap to the M3 LSD pumpkin, it has an homo joint to the shaft, far stronger than the 335i


and half shafts beefier too

[dx1541]

Originally Posted by BuraQ

It may be dyno related since I was on a Mustang dyno with default settings. I have added more power from since those dyno numbers, I might have to venture out when I get the car back for a DJ that has adequate fans with good air flow

Ok man, that sounds more reasonable, I keep forgetting you guys quote load dyno figures rather than dj.

Thanks

[BQTuning]

Originally Posted by dx1541

Ok man, that sounds more reasonable, I keep forgetting you guys quote load dyno figures rather than dj.

Thanks

FYI, as I dial things up on "my own car" FIRST you will be given the option for updating your current map, at the same time you have full control over your own map.

Ive dialed the tables in to make adding/decreasing Boost, or Torque extremely easy on your side. So when the time comes and you wish to DIY Ken or myself will direct you. We can put together also a How To Guide

I have new torque calibrations, but I havent tested them fully yet for the N54B30TO nor the N54B30 . When I get my car back it will be going on the dyno to see if my translation of the tables to actual power comes out as expected. The new calibration will be going on Ken's car this week. I have to be more wary though with the DCT as we have not torque converters

[N3m3sis]

Did you break the driveshaft or axle? I came out of a turn to hot a few months ago and snapped and axle ��

[BQTuning]

Originally Posted by N3m3sis

Did you break the driveshaft or axle? I came out of a turn to hot a few months ago and snapped and axle ��

The driveshaft input to the differential broke. 3rd time this happened in the same place so I am going on DS # 4

Gonna turn the old one into a shop to see if I can get a custom one made to handle launching from the dig. Rolls are fine.

[nyt]

There's a local place that's been making built 335i xdrive parts, sure they could handle non xdrive.

www.supershafts.com

[proTUNING Freaks]

Originally Posted by BuraQ

The driveshaft input to the differential broke. 3rd time this happened in the same place so I am going on DS # 4

Gonna turn the old one into a shop to see if I can get a custom one made to handle launching from the dig. Rolls are fine.

BuraQ, you'll keep breaking it with that tall gear ratio in the DCT final drive. Its a 2.56 and it puts a ton more load on the driveshaft/pinion area than a 3.08 or a 3.46 would. If you're willing to try my suggestion to you would be to try a 3.08. It'd shorten up your gearing but load on that part of the driveline would be less and I suspect it wouldn't break. When we swapped the 2.56 Quaife on our shop's 6MT the same situation happened with a few launches. Countless launches before that on the 3.08 were fine as well as after the 2.56. I never went back to that gear ratio in the final drive.

Dzenno@PTF

[BQTuning]

Originally Posted by nyt

There's a local place that's been making built 335i xdrive parts, sure they could handle non xdrive.

www.supershafts.com

Thanks

Originally Posted by proTUNING Freaks

BuraQ, you'll keep breaking it with that tall gear ratio in the DCT final drive. Its a 2.56 and it puts a ton more load on the driveshaft/pinion area than a 3.08 or a 3.46 would. If you're willing to try my suggestion to you would be to try a 3.08. It'd shorten up your gearing but load on that part of the driveline would be less and I suspect it wouldn't break. When we swapped the 2.56 Quaife on our shop's 6MT the same situation happened with a few launches. Countless launches before that on the 3.08 were fine as well as after the 2.56. I never went back to that gear ratio in the final drive.

Dzenno@PTF

Well noted, got no other choice at this point but to try it since I love to drage race.

Thanks for the suggestion

[marconi118]

Originally Posted by BuraQ

The driveshaft input to the differential broke. 3rd time this happened in the same place so I am going on DS # 4

Gonna turn the old one into a shop to see if I can get a custom one made to handle launching from the dig. Rolls are fine.

The M3 driveshaft input to the differential is different than the 335i
it has a beefier constant velocity joint, much more strong than the 335i joint

[LMB335IS]

Wow! Just f'ing wow! I'm impressed. My car pulled really hard before but this is a whole new level. The DCT just snaps now. I'll get you some logs tomorrow on my way home from work.

[dx1541]

Haven't got a chance to do the first logging yet but just wondering if as it is am running the 20 psi as Ken mentioned earlier, is the timing wound down on this first map?

Pretty sure I won't be tinkering my own map as I am already darned impress with the shifting. Never new our DCT boxes could shift this way lol!!

Will await your results on your new found settings...

Originally Posted by BuraQ

FYI, as I dial things up on "my own car" FIRST you will be given the option for updating your current map, at the same time you have full control over your own map.

Ive dialed the tables in to make adding/decreasing Boost, or Torque extremely easy on your side. So when the time comes and you wish to DIY Ken or myself will direct you. We can put together also a How To Guide

I have new torque calibrations, but I havent tested them fully yet for the N54B30TO nor the N54B30 . When I get my car back it will be going on the dyno to see if my translation of the tables to actual power comes out as expected. The new calibration will be going on Ken's car this week. I have to be more wary though with the DCT as we have not torque converters

[dx1541]

Originally Posted by LMB335IS

Wow! Just f'ing wow! I'm impressed. My car pulled really hard before but this is a whole new level. The DCT just snaps now. I'll get you some logs tomorrow on my way home from work.

that was what I was trying to tell everyone earlier!