All dynos read differently so that number won't compare directly unless both cars were run on the same dyno. Likely the car detecting a loss of traction because of the rollers spinning at slightly different speeds is what is causing the MR's to get inaccurate numbers.

 

Those guys from D-Sport dynoed a stock GSR at 271.4 whp. The article evens states the Evo X made 40-50 more whp than the Ralliart.

There really needs to be more of a standard between all these dynos. I'm wondering if I owned a tuning shop with a dyno that read higher than the guy down the street if I'd get more business just because some people put so much faith in these numbers.

 

what did the IX MR's do on your dynojet?

 

An auto trans chews up more power than a manual..
With an 8.x AFR however, you're not gonna make good power with anything. Factories tend to set AFR's lean in the low rpm, where they're tested by the gov'ment, and set them fat on top, so there's not a snow-ball's chance in h*ll of warranty claims from holed pistons.
Easy enough to rememdy...