Had to take my car to the dealer today to get the smog OBDII recall fixed. This wiped out my Powerchip 91 software. I expected the dealer to put stock software in and I was already making plans to take the car back to powerchip to have it reflashed since there are close by. When I went to pick up the car, the service advisor went over everything and told me the did the fix and then put the Dinan software in. I was surprised but then as I thought about it remembered the previous owner who converted it to an S1 originally had Dinan software before he switched to powerchip. So I thought, wow, guess I get the opportunity to compare the two.
So I hop in the car. First thing I notice is that even in sport mod the throttle is less agressive and the car coasts down slower. What I mean is if I'm accelerating in 2nd gear and let off, the Dinan software would allow the car to coast faster or farther. Just slightly. The Dinan software feels more tam, more soft, easier to match revs, not quit the agressive throttle beast that powerchiped is.
Then I get on the freeway. The car is definitely slower. Now this could be because the car hasn't adapted or something. We'll have to see. But I was trying to run the car hard and kept feeling like I need to downshift to get the car moving. My guess is the torque curve is lower across the rev range. This is really noticeable in 6th gear when flooring it from 2000-2500 rpm.
I want my powerchip back! I guess I've lost maybe 30 hp at lower rpms. My car did dyno very strong with the powerchip and I imagine its just running a more normal torque curve.
Well, I'll continue to report back as any adaptation happens. Sorry, but no plans to dyno it unless someone wants to pay for it. :sad1: