My car has a similar set up to yours Stephen, G56 exhaust and filter, 569 cams with roller rockers. I must admit the 569 cams and rockers were certainly not essential but, to my mind at least, they do make for a smoother power delivery and a bit more "go" through the rev range if you want it. The economy hasn't been reduced by much if any, if you drive it modestly. Not sure about the Emerald ECU that you are using but the S&S one does have a rev limiter function, usually set for a soft cut at 5500rpm as standard I think but that can be reset to 5700 soft cut and 5800 hard cut to get the full safe limits.
I am goingbto be trying an S&S ecu tuned to Stage 2 by mmc but i doubt it will able to be adjusted.
Boy did spellcheck mess this up. I have no illusions that MMC will provide and ECU that is adjustable, but since I have the AR exhaust system the base maps should be closer than the G56 ECU base map, and the G56 is adjustable. So I am going to give the MMC/S&S ECU a try to find out the difference.
Planenut, are you using the MMC ECU tuned for Stage2?
