would 15 horsepower make a big difference in engine performance? right now my 14 liter detroit is set to 500 hp. frightliner says i can increase it to 515 hp. would that make that big of a difference in mpg and hill pulling power?
2006 freightliner classic hp question
Discussion in 'Freightliner Forum' started by bbigcnote, Sep 15, 2013.