Originally Posted by speedninja
Ok so i have a 328xi coupe and i want my car to feel more sporty in the throttle or feel more powerful. Im in the works of adding the BMW Performance Exhaust but wanna know if i should add one or both of these products to get some more gain or just feel a little boost. help :confused:
I'd recommend that you check out the BMS Power Box Performance Tuner BMW for the N52 Engine
. The Power Box shows power gains from 8-10 horsepower and 8-10 Ft./Lbs. of torque
at the rear wheels on a dyno. The BMS Power Box remaps the throttle mapping for better throttle response, and an increase in horsepower and torque. The Power Box features easy installation and removal, and gas pedal switching between 7 performance maps.
Map 0 - Disables BMS Power Box, all signals pass through
Map 1 - 30% throttle remapping, performance tuning on
Map 2 - 60% throttle remapping, performance tuning on
Map 3 - 100% throttle remapping, performance tuning on
Map 4 - 30% throttle remapping, performance tuning off
Map 5 - 60% throttle remapping, performance tuning off
Map 6 -100% throttle remapping, performance tuning off
Map 7 - throttle remapping disabled, performance tuning on
In addition to the BMW Performance Exhaust (which is a great choice BTW), I'd recommend that you also look into getting an intake system on the car. An intake will be a great compliment to the tune and the exhaust system. It'll allow your engine to breath better by improving airflow and the exhaust will allow the car to exhale better by releasing back pressure.
One of the most popular choices is the aFe Stage 2 Si Intake for the BMW 328
. This intake features aFe's sealed intake design. This design provides for less intake noise while still providing all of the great benefits of an aftermarket intake system. The intake performs to provide peak gains of 12 horsepower and 15 Ft./Lbs of torque
with no other modifications required.
Originally Posted by aybarra408
I actually have a 07 335i MT and was looking into this sprint booster but Im not sure if I should get it with the JB+ tuner or will the tuner be more than enough needed. I hate that throttle response lag and im trying to get rid of it. I also heard that theres an unlock valve made by Bavarian thats suppose to help with switching from 1st to 2nd. Anyone know anything about this?
The JB+ is actually very conservative and you can definitely make a ton more power going with some alternative choices. One of the most popular tunes available is the Cobb AccessPORT for your N54 335i
. It provides very consistent power gains and is pretty much the most user friendly tune out there.
The Cobb AccessPORT ECU Flash simply replaces conservative factory settings with more aggressive calibrations that result in impressive gains in torque and horsepower while still maintaining a high degree of safety for your N54 engine. The tuning is extremely flexible and allows you to choose on the fly one of the performance maps that are loaded onto the AccessPORT. Typical performance gains from the Cobb AccessPORT Stage 1 flash are increases of 30% peak horsepower and an amazing 38% increase in peak torque. The stage 1 map is meant to be used on a stock car with no other mods. This tune is an ECU flash, not a piggy-back tuner, there will be no added devices to your vehicle's ECU.
You will get a whole lot more functionality and accessibility with the COBB AP. You do get free software and map updates for life that be downloaded straight from the COBB AP Manager software. Not to mention that the COBB AP does allows for you to do live data logging, trouble shoot, and scan & clear codes. You get free updates for life and depending on what mods you have on your car, you'll be able to run the various maps that are available (for different power gains).
They also allow you to choose between stock throttle (AT) or linear throttle (MT) maps which gives you more control of how you'd like your car to feel. Each stage is also available with both sport (91 octane) and aggressive (93 octane) maps depending on the octane of fuel you have access to. Definitely worth it to try it out, we have a 30 day money back guarantee on the product as well!