ECU reflash for E63 W212
05-27-2010, 02:44 PM
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E63 P30, CL500 Sport
ECU reflash alone, although fun, won't give you that much additional power (maybe 20 to 25 if you custom tune it). The best jump in power comes from long-tube headers combined with a good custom tune: 40 to 50 rwhp.
Check out RennTech, they've been doing great stuff for the 63
Check out RennTech, they've been doing great stuff for the 63
