Quote:
Originally Posted by humfrz
Help me out here, if a "tune" can increase the power by say 10 HP, what is the downside(s) ....... except it messes with the warranty .... ??
If there are no downsides, why didn't the manufacturer do it ..... 
humfrz - far, far behind .....  |
As with most things these days; probably emission / MPG ratings.
The gain in HP/TQ guys are getting from just a header and tune is rediculous. Add E85 to the tune and apparently, by their words, its a different engine.