Yeah, it mine makes ok power for the turbo it has. I'd like to run at tilbrooks just to see what it is on there. I'd always like more, but meh, got other things to spend my money on ATM!
If you can, drop by and see Shaun, he's a top bloke and a decent tuner too. One thing that is for sure, the ECU is only as good as the tuner, and Shaun is good. Since its not a daily driver I'd keep the Microtech, and get the tune sorted. You already have a decent ECU, why bother swapping!
If it is running that lean, I'd take it pretty easy, you can't tell if its knocking with the Microtech, so its up to your ears to hear it
Whatisname also runs a Microtech tuned by Shaun, makes around 300rwkw also