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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N54 Turbo Engine / Drivetrain / Exhaust Modifications - 335i > Sooo...added this thing called JB4!



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      02-15-2013, 09:31 AM   #1
avol3xo
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Sooo...added this thing called JB4!

I just bought my 2011 E92 6MT 4 weeks ago. Upgrading from a 2004 Accord Cpe 6MT, it was a huge increase in power and overall drivability. I read some of the horror stories you guys told about codes being thrown, cars in limp mode, and shattered charge pipes but I decided to pull the trigger on a JB4 Stage 2 and BMS Intake.

Let me just say, I can't believe how easy it was to install. I am by no means a mechanic, I can do a few basic things but I don't get my hands too dirty. Took me about 45min to install on my first try and I started at 8pm in the dark. Using only my flashlight on my iPhone I was able to get everything hooked up, turned on the car with no codes, put everything back together and cruised around for some fun. I couldn't be any happier with the way the car feels and sounds now!! So amazing that my car could just wake up like that.

I am 100% happy so far with my JB4 and shoutout to Terry at BMS for his support throughout.

Other mods so far:

Blacked out reflectors
M3 CF rear spoiler

Up next:

Springs or Coilovers
?? DP
BMW PE

Happy modding fellas!
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      02-15-2013, 09:44 AM   #2
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grats and welcome to the tuned club
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      02-15-2013, 09:49 AM   #3
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Can JB4 be removed easy enough if you are under warranty and need to take it to the dealer? Curious about installing my JB4 that is uninstalled currently....
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      02-15-2013, 09:53 AM   #4
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Quote:
Originally Posted by ericfox11 View Post
Can JB4 be removed easy enough if you are under warranty and need to take it to the dealer? Curious about installing my JB4 that is uninstalled currently....
It can be removed as easily as it was installed. Probably more easily, I guess - since you will not be doing it for the first time. That said, it still does take some time and depending on location, taking it out for a dealer visit in the dead of winter may not be a fun proposition.

edit. I now see you are in Houston. So probably no worries about winter removal.
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      02-15-2013, 09:57 AM   #5
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Quote:
Originally Posted by ericfox11
Can JB4 be removed easy enough if you are under warranty and need to take it to the dealer? Curious about installing my JB4 that is uninstalled currently....
Yeah, I imagine it's easier to take off, the most time consuming part is taking off the dang cabin filter thing up by the windshield to access the ecu.
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      02-15-2013, 09:58 AM   #6
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Originally Posted by straightcashhomie
grats and welcome to the tuned club
Thanks, it's a whole new animal now! Opened the CAN flap this morning, nice rumble at low rpms!
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      02-15-2013, 10:05 AM   #7
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Thanks for the answer. I plan to buy the extended warranty within the next week but I really would also like to mod the car some, but obviously not void the warranty I am about to pay $4000 for haha.

I plan to take it to an Indy for maintenance, and for that I would leave it on. But for any trips to the dealer for warranty work, I would want to remove the JB4, DCI, and anything else installed (charge pipe, etc). Is the DCI fairly easy to remove?

And yes, I am in Houston and while it is in the 40s right now (feels so cold as it has been 60-70 for all of December and January) I have a garage and uninstall should be no problem.
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      02-15-2013, 10:12 AM   #8
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Quote:
Originally Posted by ericfox11
Thanks for the answer. I plan to buy the extended warranty within the next week but I really would also like to mod the car some, but obviously not void the warranty I am about to pay $4000 for haha.

I plan to take it to an Indy for maintenance, and for that I would leave it on. But for any trips to the dealer for warranty work, I would want to remove the JB4, DCI, and anything else installed (charge pipe, etc). Is the DCI fairly easy to remove?

And yes, I am in Houston and while it is in the 40s right now (feels so cold as it has been 60-70 for all of December and January) I have a garage and uninstall should be no problem.
Not sure on the DCI, I have the N55 so I got the BMS intake which is just one piece but I assume anything done to the intake is easy, it all sits right there on top of the engine. Easy area to access, took me 20min to install the intake my first try.
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      02-15-2013, 10:20 AM   #9
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Really, depending on what you are bringing the car in for (warranty work wise), you may not have to worry about removing jb4. Of course, could be a case of better safe than sorry.

Though $4000 for an extended warranty sounds pretty high.... You can can do a fair bit of repairs at an Indy for that amount.... Plus, as I'm sure you know, bmw extended the factory warranty on the hpfp and turbo waste gates.

I personally found the dci to be a bit of pain to install. If you are serious about removing all your mods for warranty work, I'd probably just get a drop in filter instead of dci. Do the jb4 and call it a day. removing stuff like down pipes and intercoolers for warranty work would be real pain.

Of course, you may not even use your warranty, so the uninstall becomes a moot point.
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      02-15-2013, 10:35 AM   #10
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Quote:
Originally Posted by foghat View Post
Really, depending on what you are bringing the car in for (warranty work wise), you may not have to worry about removing jb4. Of course, could be a case of better safe than sorry.

Though $4000 for an extended warranty sounds pretty high.... You can can do a fair bit of repairs at an Indy for that amount.... Plus, as I'm sure you know, bmw extended the factory warranty on the hpfp and turbo waste gates.

I personally found the dci to be a bit of pain to install. If you are serious about removing all your mods for warranty work, I'd probably just get a drop in filter instead of dci. Do the jb4 and call it a day. removing stuff like down pipes and intercoolers for warranty work would be real pain.

Of course, you may not even use your warranty, so the uninstall becomes a moot point.
You make several good points. But, my car has Nav, HK sound, Heated Seats, Comfort Access, Backup Sensors....all things I am scared could break and end up costing several thousand to fix (especially the Nav and fiber optic audio, extremely expensive). Not to mention the twin turbos that could fail not due to wastegates too. It is $3900 for the 84M/100K Platinum warranty from BMW of Dallas...for me I think the peace of mind is worth it. I got quoted $5300 and $4600 from dealers in Houston so $3900 seems reasonable. Oh and it can also be financed. I have had two new engines in my current car and was lucky enough to talk the dealer into paying for some of it even though I was out of warranty. I don't think I can do this with a BMW, so it really is peace of mind for me.
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      02-15-2013, 11:02 AM   #11
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Quote:
Originally Posted by ericfox11 View Post
You make several good points. But, my car has Nav, HK sound, Heated Seats, Comfort Access, Backup Sensors....all things I am scared could break and end up costing several thousand to fix (especially the Nav and fiber optic audio, extremely expensive). Not to mention the twin turbos that could fail not due to wastegates too. It is $3900 for the 84M/100K Platinum warranty from BMW of Dallas...for me I think the peace of mind is worth it. I got quoted $5300 and $4600 from dealers in Houston so $3900 seems reasonable. Oh and it can also be financed. I have had two new engines in my current car and was lucky enough to talk the dealer into paying for some of it even though I was out of warranty. I don't think I can do this with a BMW, so it really is peace of mind for me.
As I'm sure you are aware, if you do finance your warranty, it just got more expensive that $3900. Do whatever will make you sleep better at night.

Me, I decided to forgo the extended warranty. Guess, I'm living on the edge. I'm only 5 months out of warranty, but so far so good - mostly. I did have to replace both of my rear tail light assemblies. Managed to find them used. Both for about $160 shipped - which would have been about the amount of the diagnostic fee my dealer would have charged (even with the warranty). Easy diy.
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      02-15-2013, 11:31 AM   #12
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      02-15-2013, 11:31 AM   #13
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Quote:
Originally Posted by foghat View Post
As I'm sure you are aware, if you do finance your warranty, it just got more expensive that $3900. Do whatever will make you sleep better at night.

Me, I decided to forgo the extended warranty. Guess, I'm living on the edge. I'm only 5 months out of warranty, but so far so good - mostly. I did have to replace both of my rear tail light assemblies. Managed to find them used. Both for about $160 shipped - which would have been about the amount of the diagnostic fee my dealer would have charged (even with the warranty). Easy diy.
They finance it at 0% actually! So it is a pretty good deal.

And just before I bought the car an injector was replaced under warranty. That and the HPFP are the only things to be replaced, but I feel like once one injector goes the others are probably on their way....and I know its not hard to DIY on the injectors but that will cost between $500-1000 depending on # of injectors.
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      02-15-2013, 05:21 PM   #14
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Congrats. Make sure to get a downpipe soon though as your EGT (exhaust gas temps) will be higher.
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      02-15-2013, 10:22 PM   #15
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Originally Posted by WhatADream
Congrats. Make sure to get a downpipe soon though as your EGT (exhaust gas temps) will be higher.
Thanks, it's in the works, I just worry about warranty with the DP.
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