Aprilia On The Road

I have a 2006 Strada with akrapovic exhaust end DNA filters. The TPS set to 16° and the CO is now at -20 what do you guys think what CO setting should I use?

Thanks!

between +7 and +16 had my best setting,
before I let the ECU engineered by Spiros

I was at +13 (with Mivv aftermarket), before Spiros remapping