View Single Post
      07-12-2013, 12:22 AM   #1
verbs
Captain
77
Rep
665
Posts

Drives: 2015 M235i
Join Date: Aug 2010
Location: Zona

iTrader: (0)

Installed JB4 stage 1 last night, initial thoughts...

I've only put about 80 miles on the car since install, and it's been about 100 degrees and humid (for Phoenix anyway) the entire time. Not idea weather conditions, and not ideal 91 octane gas.

Install wasn't horrible. The MAF sensor was a bit of a pain to remove, tmap was easy. People who say 2 minutes aren't being realistic for most of us. By the time you get your tools, disconnect the negative battery terminal, do the install/uninstall of the kit and reconnect the battery you're looking at close to 5-10 minutes for most people depending on skill level IMO.

Power gains really started to kick in around 3000rpms (didn't notice much under that) and the sweet spot for the gains seemed to be from 3000-5000rpms. Car seems to fall flat on it's face a bit after 5000rpms gasping for air. I think it's more pronounced with the extra midrange power from the stage 1 kit.

Not sure how much more of a difference I'll feel come cooler weather or more miles on the car, but I wouldn't say the gains are astronomical. Can definitely tell there's a bump in power.....kinda like "adds a grin to your face power the first time" ....not "adds a big smile/gaping mouth open" type of reaction.

First gear is now mostly worthless. Car is able to stick once in 2nd gear. I also felt that high gear/low rpm passing power improved a bit too. For the time/money on this it's a no brainer IMO.
Appreciate 0