[D335I]

Im looking for simple answers i.e 20 hp, more power down low, up top etc...

In cali 91 oct., JB+, 07 MT, BMS intake, otherwise stock exhaust will come later.

Is there a big HP difference between say JB+ @75% VS JB3 MAPS that I could safely run on 91oct and intake.

1st and 2nd strong, initial throttle response flat, press more and she goes. 3rd and 4th seem a little flat would a JB3 help in this area.

Thinking about upgrading just wondering how much seat in the pants benefit ill get.

I know you guys are probably tired of this topic and I can probably put together the answer from several other post so any help is appreciated.

Thanks,

[thatsosm]

I ran a 535i with jb3 map 3, and beat him with my jb+ at 75%,
oh and thats kinda weird that 3rd is flat for you, 3rd is the funnest gear for me.

[E92murdered]

yes it will help very much!! run map 3 power stays strong. keep in mind you can upgrade to jb3. with a full refund on jb+ if it is in the right time period. I am not sure if Brad@psi can but i know Mike@n54tuning could

Originally Posted by D335I

Im looking for simple answers i.e 20 hp, more power down low, up top etc...

In cali 91 oct., JB+, 07 MT, BMS intake, otherwise stock exhaust will come later.

Is there a big HP difference between say JB+ @75% VS JB3 MAPS that I could safely run on 91oct and intake.

1st and 2nd strong, initial throttle response flat, press more and she goes. 3rd and 4th seem a little flat would a JB3 help in this area.

Thinking about upgrading just wondering how much seat in the pants benefit ill get.

I know you guys are probably tired of this topic and I can probably put together the answer from several other post so any help is appreciated.

Thanks,

[gt3fever]

you wont go back once drive jb3 car. do it.

[D335I]

Originally Posted by alexosma

I ran a 535i with jb3 map 3, and beat him with my jb+ at 75%,
oh and thats kinda weird that 3rd is flat for you, 3rd is the funnest gear for me.

" thats kinda weird that 3rd is flat "

Thats what I always thought/hear it felt stronger during the first 3 maybe 4 days after JB install it was really fun, but seems to have flattened out since.

Impressed with the product, maybe I'm getting power hungry.

[DeePeeUnBanned]

i've been running the JB+ for about a month now...getting tired of not having a JB3 Might have to upgrade once JB3 2.0 comes out...or I might go to the darkside...

[GnokGnik]

In California I think JB+ is perfect for a little conservative boost in power...specially if you aren't close to a high-octane gas station. JB3 is nice because it will adapt to your mods though.

For me, JB+ is enough. I would have gotten it even if JB3 was the same price (The pin version is only a bill more anyways). I OWN my 335i and am planning on OWNING it for a while, so the whole increase boost to 20psi on our turbos thing will prove too costly and will be too much of a headache in the long run.


+1 on JB+ on a conservative setting 50-75% for a good +40-60whp more is more than enough for any spirited driver. (Burger Tuning claims 70whp @ 100%)


Hmm... a JB+ 75% tune would give us about 325whp (assuming 270whp stock and 15% powertrain loss) ~ 380hp which I think is on the upper limit of perfect for our cars.

A JB3 full, higher-map tune would give us 270whp +(80-180whp) claimed ~ 350whp-450whp or 400-515hp which IMHO is reckless and damaging to our powertrain (no proof its does...but how can it not be?) without considerable supporting mods.


Given that you have plans to mod further, save up for a JB3 pin or plug n play.

Thankfully we have many options that is why the 335i is such a great car both for DD'ers such as myself and for tuners.

[Nutballa]

I wonder if Burger tuning will update the JB+? hmm... A remote adjustment would be cool... well I love it so far but still need to increase it to 75% or higher.

[detrick]

JB+ at 75% was a fantastic setting and I loved it very much. I recently upgraded to JB3 v1.4 from a JB+, not so much for more power, but rather for improved smoothness and refined application of power. These are my impressions - draw your own conclusions:

(1) Running maps 2/3 gives around 13 psi, which is about the same peak power as a JB+ at 90%. Map 1 is around 12 psi, so more like JB+ at 66%.

(2) Faster times with JB3 at any given psi level, as average power is higher with the JB3 along most of the RPM curve than with a JB+. For example, map 2 (13 psi) is faster than JB+ at 90% (13 psi.)

(3) Power at higher RPMs does not drop with JB3 as dramatically as JB+.

(3) With JB3, the power is more linear, so it does not stand out as much as it does with a JB+. I do miss that non-linear application of high torque of the JB+ at low RPMs - I felt it because it dropped off at higher RPMs with the JB+.

(4) There are significant refinement factors to consider as well, unless all you care about is power. For example, my throttle response is now very smooth compared to JB+. My AT shifter vibrated slightly under load with JB+ at 90% and 100% - not with my JB3. Also, no physical solenoid bypass, which made my throttle response very jumpy and aggressive. My $50K car lost its refinement with that mod - no thanks. The JB3 does it electronically and much more smoothly. All in all, the car feels like it came beefed up directly from the factory with a JB3. It is very refined and powerful now.

In the end, I guess you need to weigh the advantage of being able to quickly remove your JB+ without tools compared to 20 minutes of work to completely remove a JB3 using tools. For a completely failed car, this really boils down to having the car towed home for JB3 removal, scanning of codes and then off to the dealer. However, if you're running JB+ at 75% or higher, you better have your laptop and scanner in your car, or you will need to tow home anyways. That alone made me upgrade to JB3.

[Mike@N54Tuning.com]

All my customers that have switched from the JB+ to the JB3, even those running the JB+ at 100% have been very happy with the performance gains, even on map3. The area under the curve is much more significant with the JB3.

Mike

[D.yi]

how does the install work on the jb3's. the jb+ seems like a cake walk.

[detrick]

Originally Posted by D.yi

how does the install work on the jb3's. the jb+ seems like a cake walk.

JB+ initial install probably 20-30 minutes due to the learning curve and tight fit. Thereafter, removal and re-installations in under 3 minutes, if not quicker.

JB3 requires some removal of plastic covers and other associated plastic pieces inside the engine bay. It ended up being much easier than my original perceptions after watching the online installation video. The ECU connections look complicated, but they are actually quite simple to complete with JB3 PNP. They are idiot proof, as they only fit one way and they do click in place. The removal of the white ECU cover on the install video looks very delicate and appears that it could get dirty with fingerprints - this is actually untrue, as it is hard plastic and quite resistant to signs of handling. Initial install probably takes 90 minutes going very slowly.

I am 100% confident I can remove my JB3 in under 10 minutes now, plus another 5 minutes to reinstall the plastic covers and associated pieces. So 15 minutes total once you have gone through the initial learning curve.

[D335I]

The JB+ is such a great lil product, its cheap, easy to install/remove and effective.

The low end torque with minimal throttle input is almost to much in traffic and I find myself shooting out more than expected. Not a bad thing but could get you into trouble, kind of like a on off switch.

I have noticed the drop off at high rpm so maybe a more linier feel with a little more power across the board is what I'm looking for.

It sounds like the JB+ is a good starting point and the JB3 and others are much better overall in power and delivery etc...

JB3 Install looks easy, I'm just worried about breaking a wire or clip or something ill wear gloves and pretend its heart surgery. Are the wires and ecu parts solid, sturdy etc...

[HPFREAK]

Yes if you take your time and dont force anything it comes apart fine and the JB3 plugs in fine. No reason wires should be pulled out or damaged. It is pretty straight forward and hard to mess up. The power delivery is very smooth but still kicks hard.

Originally Posted by D335I

The JB+ is such a great lil product, its cheap, easy to install/remove and effective.

The low end torque with minimal throttle input is almost to much in traffic and I find myself shooting out more than expected. Not a bad thing but could get you into trouble, kind of like a on off switch.

I have noticed the drop off at high rpm so maybe a more linier feel with a little more power across the board is what I'm looking for.

It sounds like the JB+ is a good starting point and the JB3 and others are much better overall in power and delivery etc...

JB3 Install looks easy, I'm just worried about breaking a wire or clip or something ill wear gloves and pretend its heart surgery. Are the wires and ecu parts solid, sturdy etc...

[Mike@N54Tuning.com]

Originally Posted by D335I

The JB+ is such a great lil product, its cheap, easy to install/remove and effective.

The low end torque with minimal throttle input is almost to much in traffic and I find myself shooting out more than expected. Not a bad thing but could get you into trouble, kind of like a on off switch.

I have noticed the drop off at high rpm so maybe a more linier feel with a little more power across the board is what I'm looking for.

It sounds like the JB+ is a good starting point and the JB3 and others are much better overall in power and delivery etc...

JB3 Install looks easy, I'm just worried about breaking a wire or clip or something ill wear gloves and pretend its heart surgery. Are the wires and ecu parts solid, sturdy etc...

The JB3 is a direct PnP, no wiring tapping, no need to run power lines. Just the 4 harnesses slide into the stock ones and you are good to go It can look a little overwhelming initially but once you are in there its very easy.

Mike

[midlife]

Originally Posted by Mike@N54Tuning.com

The JB3 is a direct PnP, no wiring tapping, no need to run power lines. Just the 4 harnesses slide into the stock ones and you are good to go It can look a little overwhelming initially but once you are in there its very easy.

Mike

mike,

for a full bolt on car with methanol - how much more whp is map 3 versus map 5 ?
i know that the difference in these maps is 1 psi... is that about 10 whp ?

thanks