I'm pretty sure it would, since it's just a piggy back to adjust fuel/timing at different load points. Just wanted to check w/ a few others first before I start putting it up for sale for NA applications to get more potential buyers.

 

Im real interested, unfortunatly it seems none of these piggy backs connect to an early 03 harness. Any idea if this is the case here as well?

 

I would just check w/ the ECU pinouts and if you have a wire diagram of the early 03, then you should still be able to hook them up to the corresponding wire.

 

Is the SS box always controlling the ecu or just when boost kicks in? I never thought about using it on NA cars, very interestin.....

 

You could make changes to a N/A car with it . But , the stock ECU would start correcting it self back to where it suppose to run at [ A/F of 14 to 1 ] . Only at WOT would the tune be always controlled by the SS box [ closed loop or open loop ] cant remember which is which