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BMW 3-Series (E90 E92) Forum > E90 / E92 / E93 3-series Powertrain and Drivetrain Discussions > N55 Turbo Engine Tuning and Exhaust Modifications - 335i Tuning > downside of used jb4?



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      02-23-2013, 01:55 PM   #1
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downside of used jb4?

hey guys im looking to buy a jb4 stage 2 used from someone who had a lease.... question is.. is there a down side of getting a used jb4?? benefits of used vs new? sounds silly but the price seems really good
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      02-23-2013, 04:03 PM   #2
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Not really. Just make sure you're purchasing the one that works with your car (harness type). Also, Terry can be a bit weird helping you if you purchased the JB4 used. He wants everyone to purchase a brand new shiny one and to those who do not need them just throw them in a drawer. Just depends what you need from him.
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      02-23-2013, 04:06 PM   #3
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Originally Posted by ronny214 View Post
Not really. Just make sure you're purchasing the one that works with your car (harness type). Also, Terry can be a bit weird helping you if you purchased the JB4 used. He wants everyone to purchase a brand new shiny one and to those who do not need them just throw them in a drawer. Just depends what you need from him.
yeah i figured the second part lol but anyway plenty of people know their way around with the jb4
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      02-23-2013, 04:07 PM   #4
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Originally Posted by missilewarriorz View Post
yeah i figured the second part lol but anyway plenty of people know their way around with the jb4
True, and the maps are pretty stable from all the testing/use they've had. Though I'd still recommend the Cobb AP, I know it isn't always cost efficient to get one.
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      02-23-2013, 04:12 PM   #5
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Originally Posted by ronny214 View Post
True, and the maps are pretty stable from all the testing/use they've had. Though I'd still recommend the Cobb AP, I know it isn't always cost efficient to get one.
its not the money for me but I really wanted the ap but thing is i like being able to just switch into map 0 on the fly that way i have everything running stock most of the time so my engine stays preserved lol just the way i like to think of it
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      02-23-2013, 05:15 PM   #6
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IMO their is no downside to owning a Jb4. Your car will make well over 400hp with just e85 and around 380 to the wheel. On a rwhp to bhp conversion it says my car should be making 485 bhp that as much the first gt-r and close to z06.Not say it will be as fast but . it will easily walk almost any stock v8 muscle car.I would highy recommend getting the G5 stage 3 board. Consider this if you want to stay stock you will make alot more hp and if you go modded you will make alot more hp. If you get new or used get the g5 stage 3 . Get new terry BMS will go out of his way to make sure you happy and will help you with everything.
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      02-23-2013, 05:35 PM   #7
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you will go thru back tires quicker? otherwise i dont see many downsides on getting a used one as long as it isnt missing pins or anything like that.

i also suggest getting a usb cable with it as it is very useful to do some data logging and code reading
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      02-23-2013, 05:55 PM   #8
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Originally Posted by DJB335i View Post
IMO their is no downside to owning a Jb4. Your car will make well over 400hp with just e85 and around 380 to the wheel. On a rwhp to bhp conversion it says my car should be making 485 bhp that as much the first gt-r and close to z06.Not say it will be as fast but . it will easily walk almost any stock v8 muscle car.I would highy recommend getting the G5 stage 3 board. Consider this if you want to stay stock you will make alot more hp and if you go modded you will make alot more hp. If you get new or used get the g5 stage 3 . Get new terry BMS will go out of his way to make sure you happy and will help you with everything.
i have an n55
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      02-23-2013, 05:58 PM   #9
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Originally Posted by SCSRe92 View Post
you will go thru back tires quicker? otherwise i dont see many downsides on getting a used one as long as it isnt missing pins or anything like that.

i also suggest getting a usb cable with it as it is very useful to do some data logging and code reading
yeah only thing is he isnt giving usb which i would probably get from bms .. thanks for input and lol and im x drive about the tire thing lol
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      02-23-2013, 05:58 PM   #10
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I purchased mine used from a member here and I've had 0 problems with it. You get to save some money and it works the same way a new one would. Just make sure you get the right harness and youre good to go.
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      02-23-2013, 05:59 PM   #11
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Originally Posted by kkakonn View Post
I purchased mine used from a member here and I've had 0 problems with it. You get to save some money and it works the same way a new one would. Just make sure you get the right harness and youre good to go.
pulling stronger with the jb?? enjoying it?
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      02-23-2013, 06:39 PM   #12
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Definitely, you'll notice it the second you drive it after its installed. Its probably the best performance gain you can get for the money. Dont think theres anything else that has a better power to $$ ratio.

Quote:
Originally Posted by missilewarriorz View Post
pulling stronger with the jb?? enjoying it?
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      02-23-2013, 06:41 PM   #13
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Originally Posted by kkakonn View Post
Definitely, you'll notice it the second you drive it after its installed. Its probably the best performance gain you can get for the money. Dont think theres anything else that has a better power to $$ ratio.
exactly how big of a difference lol ? im probably expecting too much.. and i like that ..power to $$ ratio..
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      02-23-2013, 07:29 PM   #14
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Quote:
Originally Posted by missilewarriorz View Post
hey guys im looking to buy a jb4 stage 2 used from someone who had a lease.... question is.. is there a down side of getting a used jb4?? benefits of used vs new? sounds silly but the price seems really good
The main difference is BMS won't provide email support for used tuners. So you'd be limited to using the support section on n54tech. But, if you know what you are doing that isn't a big deal.

Mike
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      02-24-2013, 11:40 PM   #15
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Thanks for the input guys, I didn't end up getting it since my car is still only at 13k miles....I don't wanna put a tune in now I wanna wait till I hit higher mileage
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      02-25-2013, 12:02 PM   #16
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Quote:
Originally Posted by missilewarriorz
Thanks for the input guys, I didn't end up getting it since my car is still only at 13k miles....I don't wanna put a tune in now I wanna wait till I hit higher mileage
I put one on mine at 15k, it's exceeded my expectations from ease of install, ease of use, and performance gain. Why wait, as long as you allow your oil temps to warm up and don't push it 24/7 you shouldnt have any issues, I couldnt be happier with the upgrade.
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      02-25-2013, 02:21 PM   #17
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Originally Posted by DJB335i View Post
IMO their is no downside to owning a Jb4.
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      02-25-2013, 03:55 PM   #18
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Quote:
Originally Posted by missilewarriorz View Post
its not the money for me but I really wanted the ap but thing is i like being able to just switch into map 0 on the fly that way i have everything running stock most of the time so my engine stays preserved lol just the way i like to think of it
No point to switching back and forth on maps, in fact i would advise against it. Then you car has to keep relearning the new map.

Stick with 1 map and drive it. There are no ill effects from driving on a performance map on the highway as the same amount of power is still being made to sustain highway speeds or drive around town.

The only time you are making your car work harder is when you are under heavy throttle.

Only downside to used is the potential for bent pins, broken connectors, or the wrong harness type for your vehicle. There is also limited tech support.
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      02-25-2013, 04:49 PM   #19
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Quote:
Originally Posted by Mike@N54Tuning.com
Quote:
Originally Posted by missilewarriorz View Post
hey guys im looking to buy a jb4 stage 2 used from someone who had a lease.... question is.. is there a down side of getting a used jb4?? benefits of used vs new? sounds silly but the price seems really good
The main difference is BMS won't provide email support for used tuners. So you'd be limited to using the support section on n54tech. But, if you know what you are doing that isn't a big deal.

Mike
I'm a used tuner and he replied to all my emails and he's always helped me with any issues.
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      02-26-2013, 09:02 AM   #20
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Quote:
Originally Posted by Jeff@TopGearSolutions
Quote:
Originally Posted by missilewarriorz View Post
its not the money for me but I really wanted the ap but thing is i like being able to just switch into map 0 on the fly that way i have everything running stock most of the time so my engine stays preserved lol just the way i like to think of it
No point to switching back and forth on maps, in fact i would advise against it. Then you car has to keep relearning the new map.

Stick with 1 map and drive it. There are no ill effects from driving on a performance map on the highway as the same amount of power is still being made to sustain highway speeds or drive around town.

The only time you are making your car work harder is when you are under heavy throttle.

Only downside to used is the potential for bent pins, broken connectors, or the wrong harness type for your vehicle. There is also limited tech support.
Great insight , yeah I always knew I had the wrong idea about longevity with
tunes. I just figured that the engine wouldn't last as long if it was being stressed with higher psi than stock. I'm only at like 13k so that's why I'm being over protective!!
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      03-13-2013, 09:11 PM   #21
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just ordered a 2013 e92 335 looking into jb4, whats the price range? and how hard is the install? and is it also bad to have it put in as soon as i get the car or has to be broken in? thanks
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      03-16-2013, 12:33 PM   #22
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