Howdy All,

This has appeared in a couple or features in GrassRoots Motorsports magazine...

http://www.powercardtuning.com/products/cars/index.aspx

It's a piggy back tunercard which allows extra fuel injector delivery.

So far it's only offered for four cylinder cars. The six and eight cylinder models are supposed to be due soon. Assuming our injectors are not "maxed-out" as some have suggested, might be an easy way to dial in extra fuel during open-loop high load and WOT operation. It seems to work as advertised on Jap four bangers but it remains to be seen whether it can make sense out of our M-Benz V6 motor/ECU/sensor combination...

Any Thoughts...?

Cincinnati Slim

 

it may be ok for WOT but I'm not sure it will provide good linear power at say 40-75% load? you really need timing control as a function of fuel, not just fuel by itself.

 

True Enough...One of the things really killing good e.t.s on our cars (especially six-speeds) is the T.C. pulling out ignition timing when shifted hard but TOTALLY turning off the Traction Control is another whole topic...

If I "granny-shift" and then roll back into WOT I can easily tell the car is making more power and pulling harder than when I try and "speed-shift" through the gears. I don't think this is "drive-by-wire" intervention; pretty sure it's simply timing retard.

What this "PowerCard " thing does is read the injector pulse signals and "fatten-'em-up" by a user set amount. The company says the device "reads the load" and can be set to richen up the injectors by a certain amount at varying engine load demands. This is really more of a "fine tuning" device to compensate for other mods which might increase airflow to the point where the factory ECU fuel maps get too lean. I think there are three or four "load points" which can be programmed for different degrees of enrichment.

This thing is selling for less than two bills now and will probably be discounted further in the near future. If the six/eight cylinder version is similarly priced it's probably worth experimenting with.

Slim