Here are my results from the M45 setup back when I was at 5.5 psi and then at around 8.5 to 9.0 psi from upgraded pulleys. This is all non-intercooled on E85 running an old school non-adjustable power card and RX8 injectors.



I am temporarily without forced induction since I sold the M45 and am awaiting delivery of my BEGI S6 system. While waiting I am tuning the naturally aspirated portion of my MS3 maps... I am considering doing a dyno run just for ***** and giggles after I finalize the naturally aspirated tune on E85.

Later,

Keith

 

What year car and engine? Any bolts on's currently? I'd be curious to see the NA E85 plot.

 

1999, with a 01+ header and a quick and dirty cone filter bolted directly to the throttle body and the GM air temp sensor strapped to the outside of the cone filter.

Keith

 

I actually really wanna see the N/A E85 results.

 

In for NA E85 dyno that is higher than the M45@5.5psi.

 

There was an article in grassroots a while back where they dyno ed a miata running MS with a bunch of different fuels. The E85 made power even without boost.

 

I don't anticipate anything like that, it would be nice... but not really in the cards on this engine. I could see close to low boost M45 results with some 11.5:1 compression pistons, but with the stock pistons I am not anticipating a huge number.

I am shooting for 12.5:1 A/F ratio (measured on a gasoline scaled wide band) and aggressive timing. If I do take it to the dyno, it will not be a tuning session, just blowing $85 to satisfy my curiosity.

Keith