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Old 02-15-2013, 08:50 AM
ChasR ChasR is offline
Officially Welcomed to the 'Fest
Location: Atlanta
 
Join Date: Aug 2012
Posts: 140
Mein Auto: 335d, E28 M5, Clubman S
I looked at three options, being out of the warranty period. JBD, Evolve and RENNtech. I eliminated RENNtech due to cost. RENNtech has a great reputation, but so does Evolve. I chose Evolve over JBD due to Evolve's claim that their tune improves fuel economy by 10%. JBD has no positive effect on fuel economy in normal driving. If Evolve's claim proves true, it will be cheaper in the long term than JBD. There is little doubt that JBD is the most bang for the initial investment $ and there is the warranty issue with Evolve and RENNtech.
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