Good Evening,

Im going to be fitting a Rotrex C38-81 supercharger soon and was wondering if anyone has any knowledge on how a very conservative base map could be created which i could use for a few days untill it is properly tuned on a dyno.
The kit should make around 430 crank hp, which is 80% higher than stock crank hp on the F20c. Now i would like to create a conservative base map for the fueling, obviously i cant just increase the fuel values on the WOT load line by 80% because ill be running 750cc RC injectors, so how much do you increase fueling by when using larger injectors? or if you change the injector size in the calibration table to 750cc does this automatically take this into account and change the fueling? Then all i would need to do is increase fueling a bit to get it down to around 10:1 AFR?
Obviously I would also retard the ign timing around 15 degrees at first aswell.
It would be easy to rustle something up if we had F22's over here as I could play around with the values from the US s2000 SC maps already on flashpro...but we have F20's

any help would be great.

 

I didn't see where you mentioned what ECU you are using. If you are using a FlashPro, then I would do a study of the different canned calibrations that are provided by Hondata, and merge the pieces together to build a base map.

They have several calibrations for larger injectors, and also for SC'ed F22C's. I doubt they have many canned calibrations for the F20C, but I think you could compare the differrence between the stock F20C and stock F22C to see how you could convert an F22C SC calibration to a "good enough" F20C SC calibration.

 

BTW, you would NOT just add 80% to the fuel tables just because you expect to make 80% more power. Since the F20C is MAP based, the biggest difference between the stock calibration and the SC calibration will be the additional load lines above 1000 mBar.

I'm not familiar with the particular SC you are talking about, but I would expect just about any SC basemap to work "okay" as long as you configure it for your injectors (cc size and dead times).