The off-road tune is a little bit more aggressive in the fact that it just takes advantage of the fact that there aren't those restrictive primaries in place. Your best bet is to email Active and get a true, concrete answer.
I put the headers on, then immediately flashed it with the off-road tune. Normally the off-road tune has the rear o2 sensors turned off, that way it prevents the CEL from coming on. This is good for people living in states without emissions.
Hope this helps.
2007 E90 328xi l 6MT l Sparkling Graphite Metallic l ZSP l ZPP l ZCW l iDrive l Logic 7 l MMW Headers l AA Stage 2 l BMW Performance Intake l BMW Performance Exhaust l Euphoria 6K LED interior l Blacklines l V3 Mtec l VMR VB3
Last edited by MBP0202; 01-11-2013 at 10:51 PM.