Quote:
Originally Posted by Patrón
Is that on 91 oct?
Wonder what a small change in oct to 93 would do to timing and end numbers.
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That should be 91 octane, which is what we get around here unfortunately.
There is *definitely* more room on 93 octane. Ususally 91 octane doesn't achieve the timing targets completely unless the conditions are ideal, where as 93 octane does quite more frequently. From what we've logged, you can expect a couple more degrees of ignition advance running 93 over 91.
My car on the same dyno put down roughly 380 at the end of 2011 - but with an older revision of software. I suspect I'm making a bit more now.
Another thing that comes into play here (aside from the obvious variables - strap down, temperature, humidity, fuel) is the age of the spark plugs. Older plugs do not provide quality feedback to the control unit, and the car will pull back ignition timing slightly.
Here is a link from a previous dyno day in which our customer Trevor made 373WHP STD.
http://www.m3post.com/forums/showthread.php?t=743176 (Edit: looks like biggy already linked it
)
Some stock M3's dyno in the low 300's.
This is an example of a car on 98 RON (equivalent to our 93 octane) before and after:
http://www.m3post.com/forums/showpos...84&postcount=1