Here's a preliminary tune of our PTUNING turbo system with our prototype 4-1 header in place. It's still being tuned on 93 octane pump gas, but this time we've added 50/50 water/methanol injection.
Things to note:
- This is just a preliminary tune. We're still working on fine tuning the midrange and chasing down an exhaust leak (likely caused by reusing a few old gaskets).
- WG is still recirculated.
- Rev Limiter increased to 7,800 rpms.
- Car was tuned at 11.5 psi with a compromise between boost, timing, and AFR to keep the engine happy. We're basically ignition timing limited at these power levels, even with the WMI. While we could run more boost and make some more power, we felt that this was a good stopping point for the current set-up on the stock compression engine.
- 93 pump gas with water methanol injection is NOT the same as E85. It's better than pump alone, but it's certainly not as good as E85 or C16/Q16, especially on this platform. Look for an E85 tune later on down the road.
- For those comparing results, keep in mind that our Dyno Dynamics dyno reads about 10-12 percent lower than a typical Dynojet, about 13-15 percent lower than a Dynapack (hub dyno), and roughly 2-3 percent lower than a Mustang dyno.
