This is after making 11 pulls in about an hour and 15 minutes. Then we worked out a few drivability issues for the rest of the two hour session. The EMS is easy to work with. I didn't mess with too much of it before today, I wanted a wideband in the tailpipe, but you can just make changes to the fuel curve while the car's driving and grab whole groups of cells and make adjustments with two clicks.

This run was pretty heat soaked, but this was still the best and last run. The first run was 190hp. I think there's more to be had just by letting the car cool down, I'll know for sure when I go back in a few weeks to fine tune some more.

 

That curve is sweet!! Very impresive for a Supercharger!1 for AEM EMS desrves more recognition!

 

what boost are you running? What was ur air/fuel ratio?

 

Where's the baseline curve?

 

The baseline's on another sheet. I'm hosting this at home on a few forums so bandwidth is an issue. It hit 190 on the first pull with just a base map loaded onto it.

The first AF ratio was right at 14:1, A bit lean. We brought it down to 11.8:1 with about 3 runs. through most of the powerband and hp went up to 200. Then we brought it up to 12.5:1 where it is now. I played with the spark curve a bit but didn't get much. I added 2.5 degrees from 7000 on up and lost a couple hp, so I took 1 degree back and gained 3 from before we touched the timing.

The last 45 minutes we just used the dynos brake to hold the car at certain rpm and load ranges (4500rpm and less with 25% to 50% load) to get the low throttle AF ratios into the high 13 low 14 range.

Overall I'm happy. It drives well, it starts well and it's making about 25 more hp than it made after we installed the blower, and that was on a cool run. It's going back for some more tuning, but I'm happy with the first session. Plus I can get on it a little now that I know how it's running.

 

Congrats man... glad you did well on the dyno. How did you like tuning the AEM? Did you experiment with the auto-fuel mapping at all?

 

You have to have a wideband in the car for the auto mapping to work. Maybe I'll get one down the road.

Tuning the AEM is easy. I had a friend/tuner who told me where to change things, but I pretty much made all the adjustments in the software. All you do is drag over the cells you want to change, right click and choose percentage adjustment and type in the amount. It works off of 100% so typing in 97 is a 3% reduction and 103 is 3% more fuel or spark. Or you can just plug in the raw value, pulse width or duty cycle you want depending on how you've got the map set to display. The spark table is just degrees advance from the base timing setting which I've got set to stock.

To set up knock control you just datalog the knock sensor on a run where you know it's not detonating and graph about a volt higher in the knock threshold map across the entire powerband. I left the base map settings of -2 degrees and +5% fuel per volt alone.

The AEM is a fine tuners wet dream. Injector advance, accell/decel fuel, anti-lag for turbo cars. You could play with this thing for weeks. Most of it I'll probably never touch.

Edit: Here's the other chart. It just shows AF and HP. No torque. I think the dyno he's got either doesn't do more than two plots or isn't set up for it.




[Modified by newt2, 2:28 PM 1/18/2003]

 

awesome my AEM goes in in a few weeks and I cant wait to mess around with it

 

good runs......man i need to get mine tuned.....to see where im at