Quick Update, the car is faster and happier so that's good, the on boost acceleration is really all the car can handle I had a wheel spinning up in third as it came on boost !
On the down side it sometimes won't start when cold, it can take 5 min of churning, that coupled with a smell of petrol from time to time has got me wondering if there is a fuel leak. I'm thinking lift pump but am not exactly an expert on the fueling system.