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      06-28-2012, 10:13 PM   #22
AJG1137's Avatar

Drives: 2011 335i e93
Join Date: Jun 2011
Location: Bloomfield Hills, MI

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Originally Posted by jtuds
Originally Posted by Alan l. View Post
^^ what is the expected HP increase with the PPK? In the past the gains are only up to 335is specs which is only 320hp.

Turner is willing to do $1500 for the Hartge tune when i emailed them. Still a lot of money for a piggyback system but looks like the only option at this point.

You can NOT compare JB to Hartge. Hartge is in a completely different league as a Bmw tuner in Europe

What impact do these piggyback tunes have on fuel efficiency and the different drive modes?
In my experience, fuel economy is unchanged. Although, having the tune makes it much more tempting to be more aggressive with the throttle, which in turn will decrease fuel economy.
Current: 2017 F36 430i GC
Retired: 2011 E93 335i; Retired: 2013 F10 528i
Retired: 2011 E90 335i; Retired: 2008 E90 328i
Retired: 2003 E39 530i; Retired: 1997 E36 328i