[ucsbwsr]

I always view the front drivetrain as being very fragile on these cars, especially my 4,600lb E61 (when it had AWD) but after spending a lot of time behind the wheel of my friends 6466 335xi which dailies at 26psi on R888s I am gaining faith again. On his car I purposefully limit boost in 1st and 2nd and NEVER launch or break boost, the slow spool of the big turbo also lessens the torque surge on the drivetrain.

I am curious how you were launching your car when the drivetrain went, were you limiting boost at all? If you have great results getting off the line with less power, then "surviving" 1st gear by limiting boot or modulating the throttle should get you into the clear.

Also, 600awhp is serious stuff. 99% of the dyno sheets on N54 forums are RWD and I don't think people appreciate just how much more impressive the AWD numbers are compared to RWD.

Evan

[SM335i]

I saw some videos of an E30xi that was pushing 1000hp. There are videos on youtube of him launching it and someone asked if he upgraded the drive train, he said he is running front diff from a 5 series indicating that it is stronger? Something to consider I guess

[RSTECH]

Originally Posted by Give_Em_The_DD

With rbs, FBO stock inlets, and e60 I was around 122-124mph (11.3-5ET, 1.5-1.7x 60ft).

I went to the the track on 3 separate occasions dialed up with inlets, pi 100% e85 etc- and broke the first 2 times, first pass each time lol :

3rd attempt I went, track prep was horrible, and the car was dialed down considerably, I couldn't even tell you the hp- but I think i was doing 11.7 @ 127-8

Looking forward to this beast.
Wasn't the 11.3 @ 122 with 470awhp if I'm not mistaking which is great considering the 1.7 60'

[Give_Em_The_DD]

Originally Posted by RSTECH

Looking forward to this beast.
Wasn't the 11.3 @ 122 with 470awhp if I'm not mistaking which is great considering the 1.7 60'

Yup- 11.3 was at about 470ish awhp....I kind of miss that setup, ran like a top lol.

[Give_Em_The_DD]

Originally Posted by ucsbwsr

I always view the front drivetrain as being very fragile on these cars, especially my 4,600lb E61 (when it had AWD) but after spending a lot of time behind the wheel of my friends 6466 335xi which dailies at 26psi on R888s I am gaining faith again. On his car I purposefully limit boost in 1st and 2nd and NEVER launch or break boost, the slow spool of the big turbo also lessens the torque surge on the drivetrain.

I am curious how you were launching your car when the drivetrain went, were you limiting boost at all? If you have great results getting off the line with less power, then "surviving" 1st gear by limiting boot or modulating the throttle should get you into the clear.

Also, 600awhp is serious stuff. 99% of the dyno sheets on N54 forums are RWD and I don't think people appreciate just how much more impressive the AWD numbers are compared to RWD.

Evan

Hey-

I was actually just reading up on your conversion a few days ago, very fricken cool man.

I didn't limit boost prior, that will be something I'll be messing with shortly, and you took the words out of my mouth, hopefully it holds together haha.

I totally agree with you on the lack of appreciation, awd/at is pretty much the worst setup for Dyno bragging rights

[jwebb335xi]

Originally Posted by Give_Em_The_DD

Hey-

I was actually just reading up on your conversion a few days ago, very fricken cool man.

I didn't limit boost prior, that will be something I'll be messing with shortly, and you took the words out of my mouth, hopefully it holds together haha.

I totally agree with you on the lack of appreciation, awd/at is pretty much the worst setup for Dyno bragging rights

F the dyno... I toss my car into a corner and hit the juice; and, given, the paltry awd HP numbers, you'd expect it to crawl but even my Porsche buddy acknowledges, the car grabs and goes!!!

Limiting boost/power until you're hooked up is probably a safe route! I'd bet wedge can protect you from yourself in 1 and 2.... Happy to drive you home otherwise bro... good luck! I'd love to watch you shatter 10.99, leaving the diffs intact!

P.S.... we gotta get together next month. I'd like your opinion on whether I should squeeze more out of my current set-up on pump 93 before I work on the E tune... It's pretty smooth, logs are good and - on summer tires - it hooks up all the time. Spins like hell on winter gear, which is hysterical...

[Give_Em_The_DD]

Originally Posted by jwebb335xi

F the dyno... I toss my car into a corner and hit the juice; and, given, the paltry awd HP numbers, you'd expect it to crawl but even my Porsche buddy acknowledges, the car grabs and goes!!!

Limiting boost/power until you're hooked up is probably a safe route! I'd bet wedge can protect you from yourself in 1 and 2.... Happy to drive you home otherwise bro... good luck! I'd love to watch you shatter 10.99, leaving the diffs intact!

P.S.... we gotta get together next month. I'd like your opinion on whether I should squeeze more out of my current set-up on pump 93 before I work on the E tune... It's pretty smooth, logs are good and - on summer tires - it hooks up all the time. Spins like hell on winter gear, which is hysterical...

Sounds good to me

[DailyN54]

Oh I finally know what the, DD means. Haha I think you will Crack in the 10s. Your one of the most knowledgeable guys I know.

-Vince

[LQQKOUT]

If I remember the record for the XI is 10.7 running RB turbos.

[Give_Em_The_DD]

Originally Posted by LQQKOUT

If I remember the record for the XI is 10.7 running RB turbos.

Lol- yeah from that kid that claimed he did it with a manual trans, etc and posted a random slip.

I saw that on facebook, he started getting ?s about his setup and took his post down. A friend looked at his profile I guess and saw that he just started running ethanol a few months prior- I personally didn't give it much thought, but the story doesn't add up imo, but hey, I could be wrong

[LQQKOUT]

No. This one's legit.

[djt81185]

Nice build. Out of curiosity what are your plans for tuning? I looked thru and didn't see anything posted.

Edit I see you used Wedge on the first car still going with them?

[Irishace]

Ohh damn wish I did not see this thread. I recently picked up a unicorn virgin 2008 Xi with 30,000 miles on it as my DD to save my M4 from winter use. I have just flashed MHD stage 1 but heading down the path of full bolt on stage 2+. I will keep a watchful eye on this thread, I really love this Xi it is shockingly fun to drive. Good luck with your efforts. I am cheering for you.

[flashburn]

Fellow XI'r here looking to build on a similar setup for the track (circuit, not drag). Will be following your learnings so I don't do it the hard way.

Curious for the drag strip - have you thought about skinnier tires? It seems counter-intuitive but a little slip might help keep things together.

[Torgus]

best of luck!

[Give_Em_The_DD]

Originally Posted by flashburn

Fellow XI'r here looking to build on a similar setup for the track (circuit, not drag). Will be following your learnings so I don't do it the hard way.

Curious for the drag strip - have you thought about skinnier tires? It seems counter-intuitive but a little slip might help keep things together.

Yes- I ran at the track prior "square" but will be running a staggered setup this go around.

Will also be messing with the dampening a bit more too.

[kurtcobain]

Holy shit, I almost looked outside to see if someone stole my car! Lol. 2010 XI here as well, just got it dyno's today. Great choice lol. Love this car! Got a 335xi for two reasons - turbo, and awd.

[Give_Em_The_DD]

Originally Posted by kurtcobain

Holy shit, I almost looked outside to see if someone stole my car! Lol. 2010 XI here as well, just got it dyno's today. Great choice lol. Love this car! Got a 335xi for two reasons - turbo, and awd.

Hahah you weren't kidding! Talk about clone

Beautiful car

[Irishace]

What is your mod list Kurt?

[ucsbwsr]

Originally Posted by Give_Em_The_DD

I was actually just reading up on your conversion a few days ago, very fricken cool man.

I totally agree with you on the lack of appreciation, awd/at is pretty much the worst setup for Dyno bragging rights

Thanks, I am nearing the end of the tunnel with the build, I can't wait.

Yea, no dyno love! A few months after everyone was all hot and bothered with MMP cracking 500whp on stock turbos I made 408awhp on a mustang dyno at FFTEC but people could care less.

Have you looked into retrofitting more durable drivetrain? Say X5M? I took a quick gander on RealOEM, collar nuts are the same so front axle splines should fit, the front differential seems to have a slightly larger case but you can make anything fit if you want it bad enough.

My buddy has a pretty high-HP AWD setup: manual 335xi, PTE 6466 and at 26psi I am assuming is around 600awhp, it runs R888s but boost is limited to 16psi in 1st and 22psi in 2nd, full beans from there on but I would never dare launch it as I am sure the drivetrain would eat itself.

Evan

[Give_Em_The_DD]

Some updated pics, updates etc.

Had a few things not car related pop up over the last 12-13 days that slower progress a bit, but now we are making some serious progress.

Was able to knock out a baseline Dyno, walnut blast + fresh injectors. Everything is just about ready to be tidied up, hoping to have everything back together by Saturday.

[Stucks]

Looks good , Dave.