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redpoint5 · 07-29-2013, 04:33 PM

The gain probably wouldn't be more than 1%, which is undetectable with my instrumentation. I'm running a 20% under-drive on the TSX and didn't notice anything.

There is the risk of not having enough alternator output to keep up with electrical demands with the under-driven system. Here is a chart showing the measured voltage of a TSX with a 20% under-driven pulley.

Original post

07-29-2013, 04:33 PM	#4 (permalink)
redpoint5 Human Environmentalist Join Date: Aug 2010 Location: Oregon Posts: 12,442 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) Mazda CX-5 - '17 Mazda CX-5 Touring 90 day: 26.68 mpg (US) Chevy ZR-2 - '03 Chevrolet S10 ZR2 90 day: 17.14 mpg (US) Model Y - '24 Tesla Y LR AWD Thanks: 4,207 Thanked 4,388 Times in 3,362 Posts	The gain probably wouldn't be more than 1%, which is undetectable with my instrumentation. I'm running a 20% under-drive on the TSX and didn't notice anything. There is the risk of not having enough alternator output to keep up with electrical demands with the under-driven system. Here is a chart showing the measured voltage of a TSX with a 20% under-driven pulley. Original post __________________ Gas and Electric Vehicle Cost of Ownership Calculator Give me absolute safety, or give me death!