Please move this question to the appropriate sub-forum, if I've misplaced this post.
My circumstances:
I'm considering buying a 2015 Mustang, with a 6-speed manual transmission. My only disappointment in my current 6-speed, is that 6th gear runs at 3000 rpm at 75mph, instead of being closer to 2500 rpm or even 2000rpm at 75mph. I'd love a little more fuel efficiency when I'm just cruising in high way traffic, with enough drafting to feel as though I'm just wasting power. I'm loading the engine less in highway traffic at 75mph than when I'm driving 50mph with no one in front of me. I'd love to be able to up-shift to 6th in highway traffic for better mpg on commutes and longer trips, and still enjoy sporty driving in 1st through 5th gears.
My Questions:
1. Roughly how expensive would it be to have someone modify my final drive ratio, or just 6th gear, to bring me closer to 2000rpm at 75mph in 6th gear?
2. Which of the various engine options offered for the 2015 Mustang would suffer the least if I'm not vigilant about downshifting, so I wind up lugging the engine sometimes, with too much load at too low an rpm?
3. Are there other drawbacks to this modification, beyond lugging the engine or causing accelerated engine wear, that I haven't considered?
Thank you,
-Slappy72
My circumstances:
I'm considering buying a 2015 Mustang, with a 6-speed manual transmission. My only disappointment in my current 6-speed, is that 6th gear runs at 3000 rpm at 75mph, instead of being closer to 2500 rpm or even 2000rpm at 75mph. I'd love a little more fuel efficiency when I'm just cruising in high way traffic, with enough drafting to feel as though I'm just wasting power. I'm loading the engine less in highway traffic at 75mph than when I'm driving 50mph with no one in front of me. I'd love to be able to up-shift to 6th in highway traffic for better mpg on commutes and longer trips, and still enjoy sporty driving in 1st through 5th gears.
My Questions:
1. Roughly how expensive would it be to have someone modify my final drive ratio, or just 6th gear, to bring me closer to 2000rpm at 75mph in 6th gear?
2. Which of the various engine options offered for the 2015 Mustang would suffer the least if I'm not vigilant about downshifting, so I wind up lugging the engine sometimes, with too much load at too low an rpm?
3. Are there other drawbacks to this modification, beyond lugging the engine or causing accelerated engine wear, that I haven't considered?
Thank you,
-Slappy72