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					Originally Posted by  classicauto
					 
				 
				how much power do you want to make? The GT40 with a decent exhaust housing can support 500whp at or over 20psi. 
			
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 i am going to control it about 15 psi-ish, but i don't want to run out of steam in the top end. when you push a turbo too hard, you are just blowing hot air into the engine. like i said, i just want to build once and be done. i don't want to keep building over and over.