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      11-26-2012, 04:42 PM   #52
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Jeff@TopGearSolutions's Avatar

Drives: C6 Z06, 09 335i, 10 335xi
Join Date: Dec 2008

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Originally Posted by benzy89 View Post
You can Google & read for yourself, but the piggys & flash function in 2 completely different ways (specific example: target boost differently). There won't be any power differences with an 335is, 1M or "normal" 135/335, so you can search the forum for any dyno comparisons of the COBB & JB4.

My greatest recommendation would be for you to see if there are any people near you that have the tunes installed on their car (JB4/COBB, similar mods to what you might do) and ask if you could go for a ride. Power isn't everything & I can promise you if the drivability is poor that you'll want to shoot yourself anytime you're not going WOT.

I will stand behind the COBB & point out that there is a reason why Terry (BMS) offers specific COBB Maps that work with the JB4 when people start running FBO/E85/Upgraded Turbos on their N54s. While the piggys can manage meth & hijack the gauges, they cannot alter fueling tables or engine timing (which IMO is much more important).

To each's own though, I should be posting some dynos & my PTF review by the end of the week after I hit the dyno tomorrow, so keep your eyes open
Great post. I agree 100% that power is great but the drivability of the tune makes the difference night and day, and everyone has a different preference and sensitivity on how the drivability should be.

We used to say back in the tune war days, try them all and see which you will like.
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