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Go Back   Bimmerfest - BMW Forums > BMW Model Discussions > 3 Series / 4 Series > E90/E91/E92/E93 (2006 - 2013)

E90/E91/E92/E93 (2006 - 2013)
The E9X is the 4th evolution of the BMW 3 series including a highly tuned twin turbo 335i variant pushing out 300hp and 300 ft. lbs. of torque. BMW continues to show that it sets the bar for true driving performance! -- View the E9X Wiki

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  #1  
Old 09-27-2013, 06:14 PM
XjohnnyX XjohnnyX is offline
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Question Got JB4 w/stock....What's the next mod?

I'm looking for opinions on my next mod. I've got a 2008 335xi w/33k miles stock with the JB4. What is the next best mod in terms of value and performance?

Johnny
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  #2  
Old 09-27-2013, 08:12 PM
fdriller9 fdriller9 is offline
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Downpipes.
Keep stock intake and add drop in filter.
Intercooler.
Charge pipe.
Meth injection.
E85.

Not in any particular order but I would start with DP though.
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Old 09-27-2013, 08:16 PM
XjohnnyX XjohnnyX is offline
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Kool... So any suggestions on brands of DPs. Seen quite a few and trying to get up to speed.

J
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  #4  
Old 09-27-2013, 08:41 PM
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CALWATERBOY CALWATERBOY is offline
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Quote:
Originally Posted by XjohnnyX View Post
I'm looking for opinions on my next mod. I've got a 2008 335xi w/33k miles stock with the JB4. What is the next best mod in terms of value and performance?

Limited slip differential makes a huge diff. Recommend your next mod - check Wavetrac.

One thing leads to another! You'll quickly become dissatisfied with your suspension.....much improvement beyond LSD available.

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Last edited by CALWATERBOY; 09-28-2013 at 03:41 AM.
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Old 09-29-2013, 12:33 PM
XjohnnyX XjohnnyX is offline
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CAL... If you were to suggest an upgrade..... Assuming I want to get the best value/$$$ spent... Would it be the LSD or DP's or something else?

Johnny
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Old 09-29-2013, 03:24 PM
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FMIC should be next. You can get into the very high 11/low 12 range on all stock parts with the JB4/ISO if you go with the BMS back end flash added to your JB4. No matter what you do you will need to cool the intake charge. Expect you are out of warranty so DP's should not be a problem unless you have a strict emissions testing program in IL. Don't know how you will use the car but be aware DP's smell.
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Old 09-29-2013, 05:48 PM
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CALWATERBOY CALWATERBOY is offline
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Originally Posted by XjohnnyX View Post
CAL... If you were to suggest an upgrade..... Assuming I want to get the best value/$$$ spent... Would it be the LSD or DP's or something else?

Well, I'm not really familiar with the nitty gritty of xdrive - have not heard of LSD's installed there. Some discussion re: coilovers but again, it's a diff beast than 335i.

After JB4 install, recommend you get to know it. Lots to explore - you can configure it any way you like in the user config'd map. That'll keep you busy for months!

One thing though: Deep six run-flats for Michelin PSS....
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Old 09-29-2013, 05:54 PM
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CALWATERBOY CALWATERBOY is offline
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Also, Winter's comin'. Consider a premium all-season like Conti DWS - you really, REALLY don't want Summer performance tires when <50 deg F.

And in snow? Don't. Just don't.

www.Tirerack.com
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