[340MSport]

Originally Posted by riskmaker76

Yes.. been running for about a year now - MPPSK + JB4

Anything above Map 1 is get timing drops... guess what happens? The computer readjusts and so does the JB4 (I see target dropping)... Drives like crap.. inconsisten

Map 3 I have never tried since it will only be worse - and I risk throwing a code. And I do NOT want to leave any evidence. One misnomer is that the JB4 erases codes. It does not.. it remove the check engine light.. the code is stored forever.

Map 1 plus MPPSK is like running Map 2 for a stock motor. I get about 15 PSI in the winter and 16 PSI in the summer - Base target is lower in the winter for some reason (but timing is higher).

Map 1 I always hold target - rarely see timing drops... Map 2 - one day no issues another cant hold timing. What that means is one day your like holy shit! this is fast.. the other day your like - WTF where did my power go? No change in fuel, etc. Even little change in weather. No reason...(of course there is just subtle enough I dont see but enough for the motor to change parameters.)

Honestly I hate the computer in this car - its too variable.

And if Im reading this right, map2 is similar to jb+ so in your experience it may not be worth the upgrade at this time.

[High Flier]

Originally Posted by 340MSport

And if Im reading this right, map2 is similar to jb+ so in your experience it may not be worth the upgrade at this time.

He is also running MPPSK, which changes it a little.

I think JB4 would be an improvement either way. You can customize it to suit your needs, fuel quality, density altitude, etc.

[riskmaker76]

No... JB+ is dumb and doesnt know of any parameters outside boost - thus acceleration is not smooth; shifting is not smooth.

Also JB+ on the MPPSK IMO is dangerious - its far better to see whats going on then guessing... Octane, Temp, etc. all affect whether or not timing will be affected..

JB4 maps will compensate..

JB4 i would recommend over the JB+ for sure with a MPPSK

Originally Posted by 340MSport

And if Im reading this right, map2 is similar to jb+ so in your experience it may not be worth the upgrade at this time.

[340MSport]

Originally Posted by riskmaker76

No... JB+ is dumb and doesnt know of any parameters outside boost - thus acceleration is not smooth; shifting is not smooth.

Also JB+ on the MPPSK IMO is dangerious - its far better to see whats going on then guessing... Octane, Temp, etc. all affect whether or not timing will be affected..

JB4 maps will compensate..

JB4 i would recommend over the JB+ for sure with a MPPSK

Thanks. I'm stock. No mppsk for me.

[riskmaker76]

JB+ is good to start Im pretty confident over time you will wish you had the JB4.. Too many complain on drivability - its because you can see whats going on - usually too much boost for octane.

Good news is you can upgrade in the 1st year...

Originally Posted by 340MSport

Thanks. I'm stock. No mppsk for me.

[Mike@N54Tuning.com]

Originally Posted by riskmaker76

JB+ is good to start Im pretty confident over time you will wish you had the JB4.. Too many complain on drivability - its because you can see whats going on - usually too much boost for octane.

Good news is you can upgrade in the 1st year...

+1

JB+ is a pretty basic boost adder.. For the price its an amazing deal, but drivability is much better with JB4.

Mike

[dereksM3]

Originally Posted by 340MSport

There's a decent deal going on now for the jb4 so buy now and save for "later".

Wheres this deal at?

[moff]

Originally Posted by dereksM3

Wheres this deal at?

+1

[chris-c]

Originally Posted by moff

+1

+2

[Jeff@TopGearSolutions]

Originally Posted by dereksM3

Wheres this deal at?

Originally Posted by moff

+1

Originally Posted by chris-c

+2

[heusing240i]

Graduated from the JB+ to the JB4 with CAI and Catless VRSF. Tried out Map3 today on 1/2 tank of 90 EF and 1/2 100 octane. Was a big difference from the map 1. Did a second gear pull starting at 2.5k and my summer tires lit right up. Planning to put it on a dyno this year.

[anderson1137]

Originally Posted by mike@x-ph.com

Yes



We price match anyone + Free overnight shipping

Can u send me the deal? cannot get free overnight shipping on your website

[mike@x-ph.com]

Originally Posted by anderson1137

Can u send me the deal? cannot get free overnight shipping on your website