Anyone ever compare Cobb to JB4?
07-11-2012, 06:34 AM
#1
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My Ride: 535i
Model Year: 2011
Currently running Cobb Stage 1 in my 535 but I've heard alot of good stuff about the JB4.
Only other mod is the BMS Dual Cone intake.
Just wondering if there is much difference between the two tunes. You know how it is,
always looking for more.
I'm in Socal so all I can get is 91 octane and that's why I'm running Stage 1 91 tuning.
I've heard that the JB4 pulls harder up top, not sure about down low.
I like the increased sensitivity of the Cobb at light throttle, seems to improve city driving
gas mileage too. Does the JB4 feel the same?
What do you guys think?
Only other mod is the BMS Dual Cone intake.
Just wondering if there is much difference between the two tunes. You know how it is,
always looking for more.
I'm in Socal so all I can get is 91 octane and that's why I'm running Stage 1 91 tuning.
I've heard that the JB4 pulls harder up top, not sure about down low.
I like the increased sensitivity of the Cobb at light throttle, seems to improve city driving
gas mileage too. Does the JB4 feel the same?
What do you guys think?
07-11-2012, 06:59 AM
#2
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My Ride: 2008 535i:
(8/07 Build) Metallic Bronze, Beige NASCA Leather, Ventilated Seats, Sport Pkg, Cold Wxr Pkg, Logic-7 Sound, HUD, Night Vision, PDC, Split Rear Seats, NAV, Premium Pkg, Comfort Access, HD Radio, Sport Auto Trans
Current mods: M-Aero Kit, JB4, Motorcepts 6000k HID Foglamps
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1992 Camaro RS:
Fully Restored w/Custom Interior, 5.0L V8, T-tops, OEM Z28 Foglamps, Inst Cluster, & Spoiler, Custom Sound, Too many engine mods to list
I've been too lazy to install my HP intake so I've been running MAP 1. There is a slight to moderate increase off the line but the big difference is when you accelerate from driving speed. A slight increase on the accelerator and the car takes off.
The JB4 offers a variety of additional functions and several different MAPs depending on your setup. There is a MAP setting to integrate meth-injection as well as a user programmable MAP setting for serious tuners. Best of all its completely removable and can be reused on another x35 with the same motor.
I don't think COBB has all of these features.
The JB4 offers a variety of additional functions and several different MAPs depending on your setup. There is a MAP setting to integrate meth-injection as well as a user programmable MAP setting for serious tuners. Best of all its completely removable and can be reused on another x35 with the same motor.
I don't think COBB has all of these features.
07-11-2012, 10:11 AM
#3
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Join Date: May 2011
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My Ride: 535i
Model Year: 2011
I've been too lazy to install my HP intake so I've been running MAP 1. There is a slight to moderate increase off the line but the big difference is when you accelerate from driving speed. A slight increase on the accelerator and the car takes off.
The JB4 offers a variety of additional functions and several different MAPs depending on your setup. There is a MAP setting to integrate meth-injection as well as a user programmable MAP setting for serious tuners. Best of all its completely removable and can be reused on another x35 with the same motor.
I don't think COBB has all of these features.
The JB4 offers a variety of additional functions and several different MAPs depending on your setup. There is a MAP setting to integrate meth-injection as well as a user programmable MAP setting for serious tuners. Best of all its completely removable and can be reused on another x35 with the same motor.
I don't think COBB has all of these features.
1) Our lagfix is fairly similar. But a bit smoother than Cobb.
2) CPS is available but not really suggested unless you run poor fuel
or have large turbos. Timing is retarded vs. stock with the JB4.
Generally performance between Cobb and JB4 is fairly similar on pump
gas. The JB4 jumps way ahead on race gas, meth, E85 mixes, etc.
Best,
T
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