[Matts435coupe]

As the title says I am looking for a jb4. Just got my 435, and coming from a 335is I feel it lacks a little power and yes I know one is an N54 and the other is an N55, but I think the tune is just what I need. So who has them the cheapest?

Thanks!

[tdizzle]

Pretty sure they're almost identically priced everywhere. I'd probably go with BMS directly because they'll ship it immediately and you'll be ready to install it in about 2 days after you place your order.

[auf Deutsch]

I'd first check the classified section on this forum.

[becker800]

They are the same, just go with BMS unless you can find a used one.

As a 435i owner with it, You wont regret the $500 decision

[Matts435coupe]

Originally Posted by becker800

They are the same, just go with BMS unless you can find a used one.

As a 435i owner with it, You wont regret the $500 decision

Spoke to Terry, he told me the jb4 stage 2 stock is only good for 30-40hp. Is that your experience? I am thinking if it only gets that kind of power maybe play it safe and go for the BMW PPE at 35hp. As someone with the tune, what are your thoughts? Is it that big a difference?

[tdizzle]

Originally Posted by Matts435coupe

Spoke to Terry, he told me the jb4 stage 2 stock is only good for 30-40hp. Is that your experience? I am thinking if it only gets that kind of power maybe play it safe and go for the BMW PPE at 35hp. As someone with the tune, what are your thoughts? Is it that big a difference?

Terry is the man and knows what he's talking about. If you're keeping your car stock, you probably could just as well go with Stage 1 and save a bit of money.

But yes, his estimations are about right. You obviously get a lot more if you add a DP and other goodies as you can use other maps the stage 2 offers.

It's probably 10whp or so more than the PPK for half the price (or less than that actually). So you're getting about 50% more power than the PPK for 50% of the price. Warranty concerns or not wanting to get your hands dirty/worrying about uninstalling it for dealership visits are the only real reason to go with PPK given it's substantial price for its output.

To each their own though.

Yes you can feel the difference, you're adding 10-15% more HP to your car. Is it going to turn it into a M5 engine's output? No.

[auf Deutsch]

BMS needs to change their initial statement on the JB4 page. It states a COMPLETELY STOCK CAR can gain up to 60whp/80 crank. To get those numbers you need a DP (with 93 on map 2). Am I misreading this or what?

[tdizzle]

Originally Posted by auf Deutsche

BMS needs to change their initial statement on the JB4 page. It states a COMPLETELY STOCK CAR can gain up to 60whp/80 crank. To get those numbers you need a DP (with 93 on map 2). Am I misreading this or what?

Maybe they're thinking using E85 is stock as it's just fuel and requires some extra wires they sell for cheap. That'll hit about 60whp over stock.

[2blu]

Originally Posted by auf Deutsche

BMS needs to change their initial statement on the JB4 page. It states a COMPLETELY STOCK CAR can gain up to 60whp/80 crank. To get those numbers you need a DP (with 93 on map 2). Am I misreading this or what?

Completely stock with 93 + map 2 will get you somewhere around those gains. DP are recommended, but a few other members and myself have run map 2 + 93 octane with an otherwise stock car with no issues.

I can't speak for everyone (as I was actually running on 94 octane since it's what we have here in Montreal) but I only ran stock for about 14 days before I got had my ER DP installed.

These statements are obviously for cars equipped with the pneumatic waste gate (so 2012 - mid 2013 F30 N55). Where as the 435i (and mid 2013+ 335i) is equipped with the electronic waste gate.

Have a look at the n54tech forums, there is a lot of info over there with a few people posting dynos with various mods, that helps to get an idea of real world hp/tq values. They are usually pretty even with what the guys at BMS are claiming.

[auf Deutsch]

Ok, this electronic waste gate is obviously hindering drivers with late production N55. 1.5 psi makes a substantial difference in performance with the I6.

[Mike@N54Tuning.com]

All vendors are contractually obligated to sell BMS products at the the same price.

For the 435 since it has an electronic boost solenoid gains are a bit less than earlier F series models with the pnumatic solenoid. You are capped around 12.5psi. Given the pneumatic solenoid I know on good pump gas the N55 JB4 can easily add 60whp if the conditions are right. With downpipes, E85, intake, etc, I've seen them gain as much as 100whp on the N55 motor. Until electronic solenoid control is added though 30-40whp sounds about right to me.

Mike

[AgentCircus]

If you're planning on staying at Stage 1 I would absolutely go MPPK. Read about the limp modes some users are experiencing on the 2014 models. Yes, the MPPK is more than double the price but it's also a more sophisticated tune. In fact it actually is a full tune and ECU update, as opposed to a box that tricks the BMW into making more power. It makes sense that it costs more than double. If any aftermarket tuner is able to crack this ECU, a full tune is going to cost at least $800. You can get an MPPK for $1250 - think of it as a $450 premium for OEM quality and warranty coverage.

On the other hand, if you're planning on adding a downpipe and other bolt-ons then the MPPK can't touch a JB4 Stage 2 in terms of performance. The numbers some of the Stage 2 guys are posting is insane. Just be aware of the risks (and rewards for that matter) associated with going this route. If I had a local tuner I could go to for troubleshooting I'd feel better about going aftermarket, that wasn't an option for me so I went with BMW.

Someone mentioned in another thread that he has just sticking with MPPK and MPE, and if he needed more power he would just get an M3/M4. It makes sense, and it's a fairly good philosophy. Why mess with the BMW engineering you just paid thousands of dollars for?

[mike@x-ph.com]

Originally Posted by tdizzle

Pretty sure they're almost identically priced everywhere. I'd probably go with BMS directly because they'll ship it immediately and you'll be ready to install it in about 2 days after you place your order.

BMS charges Shipping, some vendors do not

[mike@x-ph.com]

Originally Posted by Mike@N54Tuning.com

All vendors are contractually obligated to sell BMS products at the the same price.



Mike

+1

[carzaddict]

get a used one. same product, cheaper price

[becker800]

Originally Posted by Matts435coupe

Spoke to Terry, he told me the jb4 stage 2 stock is only good for 30-40hp. Is that your experience? I am thinking if it only gets that kind of power maybe play it safe and go for the BMW PPE at 35hp. As someone with the tune, what are your thoughts? Is it that big a difference?

I cant really comment on the # of HP as I havent dyno'd at all.
As easy as it is to install the Stage 1, I wouldnt ever choose BMW PPK that cost 3-4 times the price of the Stage 1. It takes less then 5 minutes to install and is simply 2 plugs. Once you know the location its just a matter of minutes to install/uninstall.

I noticed a pretty significant difference with JB4 and so did my gf. Is there a huge difference between Stage 1 ad JB4, probably not until they get the electronic solenoid issue fixed. For $150 difference, and the possibility of getting another 10-30 hp once its resolved, it was a no brainer for me, even with the added install difficulty. If you are fine with 30-35 HP, then go with Stage 1 over PPK, its so easy to remove if need be. Whether Stage 1 clears codes automatically like JB4 does, I am not 100% sure on that.

[mike@x-ph.com]

Originally Posted by carzaddict

get a used one. same product, cheaper price

Burger Tuning do not give support if you are having a problem with a product that you bought used or from an unauthorized vendor.