I will try keep it short, I have a 5efte running an eBay td05 16g turbo at about 16psi. im having turbo rebuilt as blades are bit nackered and I want to run about 20-22 psi as I would like to get close to 350hp. My question is I'm having a billet wheel put in and an uprated bearing but the person building my turbo has asked if I want the 18g turbine put in, is it worth it ? How bad will the lag be compared to leaving out ? Any insight would be brilliant cheers