That is correct. I would not address the speedo if you plan to do a performance tune later (i.e. CIA, S/C, etc.). You can do both then and save some money rather than getting a handheld tuner for just this change.AdamZx3 said:from what I understand you only need a retune to correct the speedometer
Was thinking (and was recommended) to get the predator as well - so shouldn't be a problem. I think stock rpms's @ 60mph is something like 1900rpm's? Anyways, I was more curious about the day-to-day 'real-world' changes from the stock settings.boss377 said:Go with the 4.10 gears, and use the Ford parts. This is the best mod you can do, regardless of whether you go with any power adders. It totally transforms the car. At 70mph in 5th, you only turn 2500 RPM. To correct the speedo, you have to own a Predator or SCT handheld anyway for these cars. Why would you want to drive around with the wrong speedo reading? It bothered me the one day I drove the car before I got around to adjusting it.
Checked my rpm's on my stock 05 today:boomn29 said:Anyways, I was more curious about the day-to-day 'real-world' changes from the stock settings.
Thanks. Stupid me, not going for the 1:1 gear. Really appreciate this. Doesn't seem like a huge difference on paper really in rpm's. All the comments I read say 'it totally transforms the car', and 'it's a blast to drive now', but nothing more!RPM said:27.2" tall tire, 60 MPH, 4th gear (1:1)