XI Limitations

3000GT MR · 07-15-2014, 09:04 PM

I haven't paid much attention since i didn't own a XI but who has the most powerful XI? I know there is a ST out there somewhere. What are the weak points of them? Anyone ever blow transfer cases, front axles, etc? Thank you

gtaccord · 07-15-2014, 09:20 PM

Not sure who has the strongest. I know at least one guy with vargas twins putting down ~580 hp and one with the FFTEC single putting down similar numbers.

I believe the general consensus is everything is ok as long as you don't do a lot of launches. There are a few stories out there about blown t cases but mostly it is the gear on the clutch motor that gets worn out over time. This is easy to replace.

A few guys have had to have their front diffs replaced but not due to power. Just normal BMW failures.

Most guys with xi's worry about the transmission more, particularly those with the 6AT.

3000GT MR · 07-15-2014, 10:52 PM

Quote:

Originally Posted by gtaccord

Not sure who has the strongest. I know at least one guy with vargas twins putting down ~580 hp and one with the FFTEC single putting down similar numbers.

I believe the general consensus is everything is ok as long as you don't do a lot of launches. There are a few stories out there about blown t cases but mostly it is the gear on the clutch motor that gets worn out over time. This is easy to replace.

A few guys have had to have their front diffs replaced but not due to power. Just normal BMW failures.

Most guys with xi's worry about the transmission more, particularly those with the 6AT.

Hmm interesting. I wonder if anyone has pulled front axles out to run just rwd. I'll have to look into the system. I really miss awd but I really don't miss the cost of fixing one.

pits200 · 07-15-2014, 10:54 PM

FBO, meth, e85, stock turbo XI here with about 125 drag strip launches cutting from about 1.63-1.80 60s. No problems with transfer case or any differentials. Nothing xi related have I had issues with, just typical 335 problems. Car has about 87k miles on it now with stock turbos. Best time is 11.89 at 118.4mph at Pittsburgh Raceway Park.

pits200 · 07-15-2014, 10:56 PM

Quote:

Originally Posted by 3000GT MR

Hmm interesting. I wonder if anyone has pulled front axles out to run just rwd. I'll have to look into the system. I really miss awd but I really don't miss the cost of fixing one.

People have been pulling fuses for the transfer case to make it rwd only. Problem with that is your wipers stay on, I've never done it and don't plan on it. I know people were trying to find a tuning solution to make the car rwd only.

JC335xi · 07-16-2014, 06:29 AM

Quote:

Originally Posted by pits200

People have been pulling fuses for the transfer case to make it rwd only. Problem with that is your wipers stay on, I've never done it and don't plan on it. I know people were trying to find a tuning solution to make the car rwd only.

Well, that and the one guy that pulled the front prop shaft.

Quote:

Originally Posted by peter91118

I have been getting a lot of PM's from people asking if my car is still fine with no front drive shaft. Ive done approximately 6k miles and still have no issues to report.

Ingeniator · 07-16-2014, 10:03 AM

Quote:

Originally Posted by 3000GT MR

Hmm interesting. I wonder if anyone has pulled front axles out to run just rwd. I'll have to look into the system. I really miss awd but I really don't miss the cost of fixing one.

It's on my todo list to figure out what kind of signal actuates the clutch. Unfortunately been rather busy. How is the car search going?

Kruz · 07-16-2014, 10:13 AM

Is that some sick German humor to keep the wipers going when RWD?

Ingeniator · 07-16-2014, 10:16 AM

Quote:

Originally Posted by Kruz

Is that some sick German humor to keep the wipers going when RWD?

It's not just wipers, Milage isn't recorded and a few other things. It lights the dash right up with idiot lights.

3000GT MR · 07-16-2014, 11:01 AM

Quote:

Originally Posted by Ingeniator

Quote:

Originally Posted by 3000GT MR

Hmm interesting. I wonder if anyone has pulled front axles out to run just rwd. I'll have to look into the system. I really miss awd but I really don't miss the cost of fixing one.

It's on my todo list to figure out what kind of signal actuates the clutch. Unfortunately been rather busy. How is the car search going?

It's not going the greatest. I'm a little to picky and I can find some good xi's but I want it to play nice with the ST. I don't want to invest $7k+ like my other car strengthen a system I can do with out

Ingeniator · 07-16-2014, 11:08 AM

Quote:

Originally Posted by 3000GT MR

It's not going the greatest. I'm a little to picky and I can find some good xi's but I want it to play nice with the ST. I don't want to invest $7k+ like my other car strengthen a system I can do with out

Yeah I know what you mean. You sticking sedan or switching to a coupe?

3000GT MR · 07-16-2014, 11:23 AM

Quote:

Originally Posted by Ingeniator

Quote:

Originally Posted by 3000GT MR

It's not going the greatest. I'm a little to picky and I can find some good xi's but I want it to play nice with the ST. I don't want to invest $7k+ like my other car strengthen a system I can do with out

Yeah I know what you mean. You sticking sedan or switching to a coupe?

I want a 2009-2010 m sport, premium, sport, Navi, and every other bell and whistle preferably coupe under 50k and I don't care about exterior color.

07-15-2014, 09:04 PM	#1
3000GT MR Major 267 Rep 1,392 Posts Drives: 09 335i/3000gt vr4 Join Date: Jun 2012 Location: Sav GA iTrader: (6)	XI Limitations I haven't paid much attention since i didn't own a XI but who has the most powerful XI? I know there is a ST out there somewhere. What are the weak points of them? Anyone ever blow transfer cases, front axles, etc? Thank you __________________ Have a single turbo and/or tired of burning up O2 sensors? Ask me about the new ADV O2 sensor retro kits! 335i 2010 e92 M-sport Mods: VM Top mount 6466, Aquamist HSF4 w/custom direct port. VRSF IC + Exhaust 335i 2009 e90 665RWHP VFF900 ST RIP .
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07-15-2014, 09:20 PM	#2
gtaccord Major 60 Rep 1,465 Posts Drives: 2009 BMW 335xi Join Date: Feb 2012 Location: Maryland iTrader: (7) Garage List 2009 BMW 335i xdrive [0.00]	Not sure who has the strongest. I know at least one guy with vargas twins putting down ~580 hp and one with the FFTEC single putting down similar numbers. I believe the general consensus is everything is ok as long as you don't do a lot of launches. There are a few stories out there about blown t cases but mostly it is the gear on the clutch motor that gets worn out over time. This is easy to replace. A few guys have had to have their front diffs replaced but not due to power. Just normal BMW failures. Most guys with xi's worry about the transmission more, particularly those with the 6AT.
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07-15-2014, 10:54 PM	#4
pits200 Colonel 552 Rep 2,598 Posts Drives: 09 335i X-Drive Black Sapphire Join Date: Mar 2010 Location: Pittsburgh iTrader: (1)	FBO, meth, e85, stock turbo XI here with about 125 drag strip launches cutting from about 1.63-1.80 60s. No problems with transfer case or any differentials. Nothing xi related have I had issues with, just typical 335 problems. Car has about 87k miles on it now with stock turbos. Best time is 11.89 at 118.4mph at Pittsburgh Raceway Park.
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07-16-2014, 10:13 AM	#8
Kruz Major 22 Rep 1,083 Posts Drives: 2021 M2C 6MT Join Date: Jun 2007 Location: Chicagoland iTrader: (4) Garage List My garage spot [0.00] 07/07 BMW 335xi [8.50] 2001 Honda CBR600F4i [0.00] 2007 Husqvarna SM610 [0.00] 2004 Chevy Tahoe Z71 [0.00] 2005 Harley Davidso ... [0.00] 2007.9 335xi [6.50]	Is that some sick German humor to keep the wipers going when RWD?
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