• RPI (Race Precision) customized Stage III ESS VT2 supercharged E60 M5 S85 V10 hits 576.8 wheel horsepower

      S85 V10 supercharger kits have lagged pretty far behind S65 development despite the V10 making its debut well before the V8. There are several reasons for this but the supercharged V10's are starting to come into their own. RPI refers to this setup as a Stage III and we are not exactly sure what that means. Higher boost most definitely but what else? Meth? Race gas tune? What fuel was used for the dyno runs and what boost? Why are these details missing?

      The vehicle in question has the RPI headers, RPI exhaust, and the RPI oil cooler. 576 wheel on a dyno dynamics is pretty good although this not in shootout mode and compared to other dyno dynamics numbers BimmerBoost's experience with RPI's Dyno Dynamics tells us it is corrected quite a bit. To remove any speculation we would like to see a dyno in shootout mode but since that will not present higher numbers we will not see it. This setup would yield over 600 whp on a dynojet though which we are fairly certain of especially considering a stock M5 puts out 390 whp on the RPI dyno and a stock M5 puts out around the ~420 range on a dynojet.

      That would mean a rough estimate of 621 whp on a dynojet. Not bad for what we would guess is a high boost and high octane setup on the stock motor. If the kit was using something larger like the Vortech T-trim, these results would be more impressive on the V10 especially versus T-trim E9X M3's which have cracked the 600 wheel mark.




      This article was originally published in forum thread: RPI (Race Precision) customized Stage III ESS VT2 supercharged E60 M5 S85 V10 hits 576.8 wheel horsepower started by Sticky View original post
      Comments 43 Comments
      1. stormtrooper335's Avatar
        stormtrooper335 -
        there is a twin turbo e60 m5 http://www.zerotohundred.com/newforu...mw-e60-m5.html
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by MSIZZLE Click here to enlarge
        and sticky i dont think it has anything to do with the prive because look at all these ugr gallardos that have 60-130k under the hood plus the cost of a 200k lambo!! they are pretty common for what it is now, these ams alpha 12 gtrs that are north of a 100k for the kits are starting to pop up all over the place too, or even the lesser kits that cost over 60k. So there is not one really wealth guy on the planet that has the money and happens to love the s85 and wants to show case its performance???
        I just don't think S85 guys are as hardcore.
      1. Sticky's Avatar
        Sticky -
        Click here to enlarge Originally Posted by stormtrooper335 Click here to enlarge
        Remote mounted...