12-06-2017, 09:51 AM | #1 |
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JB4 on x3 m40i - update!!!@ 400hp+ monster
I just got an answer from Burger and from my goto bmw aftermarket shop Vag in laval
Both believe the JB4 will work on the new M40i So getting this done in 2 weeks when my car arrives http://www.burgertuning.com/B58_JB4_...nce_tuner.html UPDATE !!!!! installation is done. my local shop says it was just like any jb4 on a b58 engine . my ass dyno tells me it's about 400 to 420hp and wow it moves !!! you'll need the Bluetooth connector since the dash controls don't work with a digital dash alsp get the 50$ steel case. really protects the chip Last edited by Seaz; 01-10-2018 at 06:56 PM.. |
12-06-2017, 10:43 AM | #2 | |
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12-06-2017, 10:57 AM | #3 |
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Wow, its already fast , I cant wait to see the times with an extra 60hp
your going to have to spend a lot of money at a competitor to get the same speed |
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12-06-2017, 11:32 AM | #4 |
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Since the B58 engine in the M40i is already boosted a little higher than in other G platform cars I'm not sure if JB4 will add the same increment of 60hp.
And if it will what the impact is going to be on long term reliability of the engine. |
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12-06-2017, 01:36 PM | #6 |
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I've never had JB4 in my BMW's. I had Dinan Stage 1 in my prior E92. But you have to love the cost of Burger products and I've not read of anyone that has ever had a problem. I have an F32 435i. Seems everyone has JB4 and again, I don't hear any complaints. As long as it is easy to remove before a dealer visit (and they say it is), it is the way to go in my opinion.
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12-06-2017, 02:13 PM | #7 | |
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In your case N54 motor was a little more robust than N55. And in case of the 2016 model it's too early to tell on long term implications. Certainly sounds very attractive. |
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12-06-2017, 10:41 PM | #8 |
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I remember way back in 2006-7 when Terry Burger was trying to convince everyone that the juice box was a real product. I did buy one of the early ones for my 335xi and it did seem to work. I think I still have it somewhere.
I'm with the others, where this variant of B58 is already of the higher power variety I'm skeptical about how significant the gains would be, and/or if there are any tradeoffs. |
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12-07-2017, 08:03 AM | #9 |
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I agree, I'd like to see some numbers with this exact car, also my car's not a lease so I'm deathly afraid of messing with it
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01-10-2018, 06:46 PM | #10 |
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UPDATE !!!!!
installation is done. my local shop says it was just like any jb4 on a b58 engine . my ass dyno tells me it's about 400 to 420hp and wow it moves !!! you'll need the Bluetooth connector since the dash controls don't work with a digital dash alsp get the 50$ steel case. really protects the chip Last edited by Seaz; 01-10-2018 at 06:54 PM.. |
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01-10-2018, 07:07 PM | #11 | |
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01-10-2018, 07:08 PM | #12 |
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you just turn off the chip using the iPhone app. unless they are digging real deep they won't find it
also the dealers I've dealt with don't care about it even if they do find it |
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01-11-2018, 03:22 AM | #13 |
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Dinan also has the Elite out for the B58 with MPPK, I'd imagine the M40i is using basically the same tune. You can see their baseline numbers were 378/395 and their tuned numbers are 426/463. You'd think the JB4 would probably be pretty comparable.
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01-11-2018, 09:20 AM | #15 |
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Very good news. I haven't had a JB4 and have typically stuck with flash tuning but know many people with great results using them on different models.
Really interested to see any dyno results if you get the chance.
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01-11-2018, 10:14 AM | #16 | |
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Around here, I'd have to find a shop willing to install it. I haven't a clue who would do it. |
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01-11-2018, 12:17 PM | #17 |
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I don't think I will Dyno, too expensive and ultimately I can tell the power is now where I want it to be just by my ass dyno
For the purchase and install I have a shop in Montreal that does a lot of tuning, VAG motorsports , they ordered, installed and I was out of the shop in 40 minutes. In CND it cost me 1100$ but that includes , jb4, metal case plus install time
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01-11-2018, 01:07 PM | #18 |
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I posted a few questions on the forum that Burger follows and replies to activity
http://www.n54tech.com/forums/showth...=31429&page=43
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01-11-2018, 01:32 PM | #19 | |
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01-11-2018, 01:46 PM | #20 | |
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I had a JB4 on a 435, it worked fine and is a great deal. But this time I'm gonna do Dinan to get a more stock-like response and have the warranty fallback. |
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01-11-2018, 02:53 PM | #21 | |
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But, at least looking at what Dinan did with the B58, the MPPK gets tuned to 426/463 and the standard only gets to 412/438. So something is different, especially since they sell two specific tunes.
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01-11-2018, 05:38 PM | #22 | ||
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Also require the big turbo, Downpipe etc? |
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