I don’t know much about the rocket efi. But generally narrow band o2 sensors don’t work unless you are very close to stoichiometric. So the system is unable to detect when is missing the afr target. That’s what I was referring to
Understand. The ecu goes into closed loop when the target value in the Rocket AFR table is 14.5, the rpm is low and throttle steady. You can see this area in the stock tune. In the later vin maps, US R model, Penner has lowered those targets to 14.1 and enriched the fuel a bit in this area of the table. I’m not sure if closed loop remains active. I think it does. Even if it doesn’t (same as disabling closed loop and relying solely on the fuel tables), Penner’s tuning is derived from the dyno. Unless you are concerned about emissions, Penner’s tune will work fine for you assuming your bike is stock.
Funny you should ask. I saw a post, maybe on the Tuneecu Facebook site, that got heavily into this. The guy wanted to get more from his Street Triple or Daytona and went through this elaborate mathematical approach to derestricting the Torque Limits. basically increasing them well above what the motor was capable of. Simplistically, kind of scaling the whole thing up. He didn’t do it on his bike. He was concerned about how messing with it might affect other things like traction control. The ECU can’t know how much torque is actually being produced so this table must represent a relative restriction based on theory or what the engine actually put out on the bench.
