G Gravy69 Member Jul 6, 2018 9 2 13 North Carolina Jun 16, 2019 #1 Jun 16, 2019 #1 In a 2003 GT, if I upgrade the plenum and throttlebody. To a 75mm will I have to get a tune to to show any performancr improvement
In a 2003 GT, if I upgrade the plenum and throttlebody. To a 75mm will I have to get a tune to to show any performancr improvement
Dark04GT 10 Year Member Apr 27, 2008 758 62 59 NC Jun 16, 2019 #2 Jun 16, 2019 #2 You will get a mild bump in performance - no tune needed. If you have free tunes you could squeeze maybe a smidge more horsepower (single digit) with an new tune but it isn’t critical to tune it. Reactions: OneSick99GT and Gravy69
You will get a mild bump in performance - no tune needed. If you have free tunes you could squeeze maybe a smidge more horsepower (single digit) with an new tune but it isn’t critical to tune it.
G Gravy69 Member Jul 6, 2018 9 2 13 North Carolina Jun 16, 2019 #3 Jun 16, 2019 #3 Thanks for the info