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redpoint5 · 08-09-2010, 01:18 PM

I drive a 2006 Acura TSX 6-speed manual, and the car has among the lowest Cd I've seen (.27). When I bought the car, I was thinking that with 6 gears, the top gear would be very tall and good for highway travel. The reality is that it's geared very low and has close ratios. At 70mph, I'm doing 3000RPM, which seems a bit high.

Is it possible to swap out only my 6th gear so that I can accelerate quickly in the first 5 if I wanted to, but shift into 6th to cruise efficiently? If it's possible, how difficult would the job likely be?

At 70mph, what RPM are you running?

08-09-2010, 01:18 PM	#1 (permalink)
redpoint5 Human Environmentalist Join Date: Aug 2010 Location: Oregon Posts: 12,819 Acura TSX - '06 Acura TSX 90 day: 24.19 mpg (US) Lafawnda - CBR600 - '01 Honda CBR600 F4i 90 day: 47.32 mpg (US) Big Yeller - Dodge/Cummins - '98 Dodge Ram 2500 base 90 day: 21.82 mpg (US) Chevy ZR-2 - '03 Chevrolet S10 ZR2 90 day: 17.14 mpg (US) Model Y - '24 Tesla Y LR AWD Pacifica Hybrid - '21 Chrysler Pacifica Hybrid 90 day: 43.3 mpg (US) Thanks: 4,327 Thanked 4,480 Times in 3,445 Posts	6th gear swap? I drive a 2006 Acura TSX 6-speed manual, and the car has among the lowest Cd I've seen (.27). When I bought the car, I was thinking that with 6 gears, the top gear would be very tall and good for highway travel. The reality is that it's geared very low and has close ratios. At 70mph, I'm doing 3000RPM, which seems a bit high. Is it possible to swap out only my 6th gear so that I can accelerate quickly in the first 5 if I wanted to, but shift into 6th to cruise efficiently? If it's possible, how difficult would the job likely be? At 70mph, what RPM are you running? __________________ Gas and Electric Vehicle Cost of Ownership Calculator Give me absolute safety, or give me death!