Reviewed By Graham H (HILLIARD, OH) Reviewed for a 2015 Toyota 4Runner —6/11/2019 6:35 PM
Toyota 4Runner- highway and city, 1mpg improvement. Throttle response improved. Nice sound on acceleration
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Reviewed By Roger E (Wichita, KS) Reviewed for a 2014 Toyota 4Runner —2/21/2018 8:03 AM
I purchased this specifically to increase fuel efficiency in that I average right at 16.6 mpg. It has gone up to about 17.2 mpg now and not sure I would have bought it if I had known there was so little return for the investment. When accelerating to get onto the highway it makes lots of noise. Think kids that love noise emanating from their cars would love this addition, however Iam an older adult and just wanted better MPG and drive conservatively.