Has Anyone Gone From Jb4 To Cobb??
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01-31-2013, 07:15 PM
Drives: 2007 335i, 2015 M3
Join Date: Dec 2008
Are you guys still arguing which is faster? lol. It all depends on the maps and settings used on each one. Both the JB4 G5 ISO and a Cobb (especially with pro tuned maps) are able to produce 400-440whp on E85 and run great track times.
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