We have been developing emanage maps for our project turbo s2000 for the past 2 months on a daily basis. I personally have logged over 3000 miles on the car with the emanage on board and we have a learned a lot since then. Basically we are taking this drastic approach when tuning the car because of the lofty compression ratio and s2000

 

Man now I really have to get my A/F tuned after hearing that. Im running a little lean with up to 13.5:1 A/F ratio. Im not sure how much differant it would be with a SC but I thought running in the 11:1 - 12:1 was a optimal range. Thanks Terry for the info as I might switch from the V-AFC to the Emanage.

Matt

 

Good write up Terry, whenever you guys done with your turbo kit. Bring it up here to Nova. I would love to see how it does against the Vortech.

 

Are you having any problems with fouled out plugs running that rich? Many theoretical approaches to tuning suggest a 14.0 mid-throttle/load AFR and a 11.9-12.5 AFR for WOT/full load. I personally have been fouling out plugs even running at 11-12.5 AFRs on my full throttle runs. Granted, I'm using some cheapo plugs till I get things dialed in with the AEM EMS, but running 10s AFR still seems mighty rich to me...

Are you maybe having other problems with your project car, perhaps some scratches in the cylinder are retaining heat and causing detonation? Excessive intake charge temperatures?

 

Thanks Jeff, We may have to do that
No plugs have been fine, we have been checking them on a very frequent basis. In regards to the a/f ratios yes they have been extremely rich however unlike the AEM we have no ability to control timing. So the car is run on factory timing and without retarding the timing those a/f are necessary to prevent detonation on our car.
[QUOTE]Are you maybe having other problems with your project car, perhaps some scratches in the cylinder

 

To add another thing we initially planned on running the car in the 11.5-12.5 range. Also our partial throttle has been in the 12-13.0 range. We usually run our other cars in the a/f range you have mentioned since this seems to be the norm

 

Cool, thanks for the info. Really quirky that you can't change timing and have to run so rich.. Hurts the fuel economy! Not like you're worried terribly about economy at WOT.. Good luck and keep us informed.

 

[QUOTE]Cool, thanks for the info. Really quirky that you can't change timing and have to run so rich.. Hurts the fuel economy!

 

Terry, the lack of a master fuel trim can be faked out by telling the emanage you are using slightly smaller (or larger) injectors then you really are....... you know, that page that asks what stock was and what you are using then divides them for the effective ratio.....

 

The AEM is nice so far. Little bit tedious to set up, and I haven't gotten to the point where I can do some real long WOT pulls yet.. I have to set up a variety of things, knock sensor, fuel map adjustment for egt/boost/barometric pressure (I'm not actually sure the s2k has a baromatric pressure gauge heh), closed loop fuel maps, automapping to fine tune the maps, etc.. When I'm confident we are closer to what kind of fuel we'll be running then I'll use better plugs.. Until then I'm just using el cheapo plugs that foul out pretty quickly.

But all things considered, from what I've seen I've been real happy with the AEM so far.