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      06-22-2015, 11:15 PM   #3977
bmwfast
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Drives: 335is, 6MT, JB4, DP,
Join Date: Jul 2013
Location: San Diego

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JB4 for 335is. Is it really faster ?

Quote:
Originally Posted by djlilmikeny View Post
If you don't want to spend money in the Cobb, the JB4 is perfect. Just installed it a few weeks ago with no issues and I'm loving it! Especially the Guage hacking to see boost pressure. I also have the 2 step and no lift shift which is fun.
Hi DJ,
I managed to purchase a 2012 CPO LeMans blue 6MT with 12k miles on it. I love driving it everyday and the torque is pretty impressive. I'm planning on installing a JB4 G5 ISO . Given that we both drive (and love) manual transmission and that you already installed a JB4 G5 ISO let me ask you a couple of questions:

1) Do you really notice an increase wrt to stock over-boost TQ ?
2) According to this nice video the JB4 G5 ISO doesn't provide any performance improvement wrt stock in 0-60 time:

3) Does the G5 ISO have a specific setting for 335is ?

I plan to use Map2 as I run pump fuel (91 here in California). Would I need a back-end flash like MHD to get the best gain for the buck ?

Pls understand that I don't want to want to waste my money, so I would appreciate all the suggestions/recommendations you guys can give me.

Thanks
-Roberto
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