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Took my car to get on the rollers today, did 6 runs, 3 on 91 octane and 3 on E25-E30. 90 degrees outside and hood closed. I have a stage 1 tune by V Tech, stock intakes, only a second cat delete and muffler delete. Car only gained 3WHP on ethanol, the blue line is the first pull on 91, green is the second pull, and red is the second pull on e30. All pulls were in 4th, we tried a 5th gear pull but hit the dyno limiter.
Mercedes SLR McLaren 722 S Is Extremely Rare Example Modified by McLaren
Slideshow: A one-of-one U.S.-spec Mercedes-Benz SLR McLaren Roadster became even rarer after a factory-backed transformation at McLaren's headquarters.
