SL55/63/65/R230 AMG: Retractable Top Question...

I say the ECU mod should be one of the first mods anyone does for a car. If they aren't satisfied with that massive increase in the peak hp, and as well as the under the curve optimization, go for the other mods as well.
If you know you want more than one RENNtech mod, I can arrage and and get you a deal, but none the less, if you arne't sure, you can always tell me later and I'll work out the same thing because we're all friends here.



