I know its a search for a happy medium that is why I was going to use the wideband sensor to monitor the mixture and adjust accordingly. I only want to have it marginally on therich side to give me some piece of mind, I don't drive the balls out of it so its just wehn I do come on boost I'd like to know I'm in a relatively safer place.

Ireland isn't a great couintry for RS tuners, and I won't give my car to any ould gimp with a rolling road.

I just thought that the Adjustable FPR would let me richen it up enough for a bit of piece of mind