Wilhelm Raceworks MR2 on Autocross CoursePhoto by Andy Hodapp

Welcome to Wilhelm Raceworks

Since 2010, specializing in optimizing the MKII Toyota MR2 for road course, track day, and autocross use.  My goal is to improve the suspension, handling, and performance of the MR2 through measurement, analysis, and optimization, and to pass on these improvements to MR2 owners worldwide.  Please feel free to contact me with any questions about how I can help improve the performance of your MR2.

Check out my YouTube channel for videos of my products in action!


Recent Blog Posts:

X-Pipe Dual Exhaust Build

Dual exhaust with x-pipe for 2GR swapped MR2

Almost since I first v6 swapped on my car, I have been reading about the performance benefits of a true dual exhaust with an x-pipe compared to the y-pipe I have been running.  But I was skeptical.  How much difference could it really make?  Would I even be able to fit two pipes over the cross member?  Finally I decided to give it a try.

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2GR-FE Power Gains

2GR X-pipe vs Open Y-pipe vs Y-pipe with catalytic converter and muffler.

Toyota rates the 2GR at 269hp (at the flywheel), give or take a bit depending on the application.  My swapped MR2 initially dyno'd 280hp (at the wheels).  Assuming 17% drive train loss, that's 337hp at the flywheel, or a gain of 68hp vs stock and a specific output of 96hp per liter.   Not bad for a stock motor with intake / headers / exhaust, but that doesn't mean there isn't room for improvement!

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More blog posts...