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BMW 3-Series (E90 E92) Forum > BMW E90/E92/E93 3-series General Forums > Regional Forums > Australia > jb4 or flashtune?



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      09-26-2014, 02:11 AM   #1
335pm
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jb4 or flashtune?

Hi
Just wondering how safe the jb4 is compared to a tune from a perfomance shop.
Does anyone know where i can get a jb4 in melbourne?
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      09-26-2014, 03:08 AM   #2
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I believe Active Motorwerke supply and install JB4's.

I am not affiliated with them and I've never used their shop for service but their reputation on these boards is second to none for Melbourne shops.

Only reason I didn't get my JB4 from them was because I installed myself, due to living down the Peninsula (about 1 hour from them).

After getting the JB4, I would suggest getting that first over a tune. I asked the same question only months ago, and I don't regret the JB4 one bit.

I originally thought that getting a direct flash tune was legal, due to my interpretation of the vehicle standards... turns out both are illegal - only difference is that one is plug and play with no specialists tools or software, and the other is not.

Only reason I would get a custom tune over the JB4 is if you have already modified everything else and want a custom tune to take advantage of everything installed. The JB4 has a self-learning map though, so I don't know if even the flash tune would help that much.
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      09-26-2014, 03:19 AM   #3
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going to ask you a few questions first before answering that

How long have you had your car?
What are your future plans for the car?
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      09-26-2014, 03:48 AM   #4
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I just bought the car 2 weeks ago and i plan on keeping it for about 2 years. Im just abit worried about a few things, i read somewhere jb4 has no control of timing compared to a flashtune and i will hate having engine light or error codes popping up. Does this happen with jb4? I also notice alot of people complaining about missfiring with jb4?
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      09-26-2014, 04:01 AM   #5
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Future plans will be downpipes and a cold air intake. Not into meth or changing turbos or going full crazy on it.
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      09-26-2014, 04:09 AM   #6
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I have had JB4 for a few months and not had one engine light or misfire.

I replaced the coil packs and spark plugs at the same time I installed Jb4. Everything else is standard including air box.

I would get JB4 as it's cheap, reversible and provides other features not in a flash tune (code reading, safety map, gauge information etc). You can resell it if you don't like it. You can't resell a flash tune.
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      09-26-2014, 04:22 AM   #7
335pm
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True. Sounds good. I think ill be going with the jb4. Whats an average price for one? I see differnt prices everywhere
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      09-26-2014, 05:15 AM   #8
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One more thing. Ive watched videos and seen peoples dashes going crazy when they drive. Is it posible for dashes to stay normal on jb4? So the dash dosnt turn into guages?
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      09-26-2014, 07:59 AM   #9
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Quote:
Originally Posted by Scotty89
I have had JB4 for a few months and not had one engine light or misfire.

I replaced the coil packs and spark plugs at the same time I installed Jb4. Everything else is standard including air box.

I would get JB4 as it's cheap, reversible and provides other features not in a flash tune (code reading, safety map, gauge information etc). You can resell it if you don't like it. You can't resell a flash tune.
What he said. Unless you're really penny pinching or you're a proper DIY guy, just get it supplied and installed by a good workshop as it will be supported. Have owned my car for a month and got my JB4 from Active. They seem OK.
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      09-26-2014, 08:06 AM   #10
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Quote:
Originally Posted by 335pm View Post
I just bought the car 2 weeks ago and i plan on keeping it for about 2 years. Im just abit worried about a few things, i read somewhere jb4 has no control of timing compared to a flashtune and i will hate having engine light or error codes popping up. Does this happen with jb4? I also notice alot of people complaining about missfiring with jb4?
You won't be needing any timing changes with your mod list.
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      09-26-2014, 08:08 AM   #11
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I originally had a flash tune on mine when I purchased it but decided to go with JB4 because I read all the rave reviews here on the forum. Personally, I feel the car is slightly slower on the JB4 compared to the flash tune but this could also be placebo...
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      09-26-2014, 08:57 AM   #12
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Quote:
Originally Posted by 335pm View Post
One more thing. Ive watched videos and seen peoples dashes going crazy when they drive. Is it posible for dashes to stay normal on jb4? So the dash dosnt turn into guages?
Yes - Mine has gauge hijack disabled.

You can set it to always on, on when throttle is >50% (i.e. when you mash the pedal and want to see boost levels) or always off, I believe.
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      09-26-2014, 09:24 AM   #13
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JB4 without a doubt. I've been running mine for over 4 years. I've also run my car flash only and it's not as smooth as the JB4.
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      09-26-2014, 10:29 PM   #14
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I have also just bought a e92 335i couple weeks ago, I went with the JB4, for the price you cannot beat it,
installed last week, totally different car!
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      09-27-2014, 07:55 AM   #15
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Jb4 ftw! Seriously i do miss my n54! Oh well ill get it again in the future.
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      09-27-2014, 08:13 PM   #16
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I went with the Proceed Rev 3 and have had no issues at all.
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      09-28-2014, 09:33 AM   #17
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For your mods. Jb4, bang for Buck without doubt. Enjoy your car stock Then get a jb IMO.
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      09-28-2014, 12:26 PM   #18
335pm
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Ok thanx. Ill be ordering the jb4.
Is it a must to change the spark plugs and coil packs before i install the jb4?
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      09-28-2014, 06:31 PM   #19
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Quote:
Originally Posted by 335pm
Ok thanx. Ill be ordering the jb4.
Is it a must to change the spark plugs and coil packs before i install the jb4?
Not a must unless you experience misfiring. Just change your plugs every 15k.
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