So Im debating on changing my exhaust housing to a .63. Right now I have a .48 on a 60-1 on my s2000. I'm making 340whp on 9psi with a 2.5 exhaust and DP. Just wondering if my .48 is killing me that much that i should change? should i go bigger than .63?

 

yes the .48a/r is killing you and so is the 2.5in exhaust

 

The exhaust has been changed to a 3in already. Mase came too early and i had no time for the exhaust to be done right so I tuned with what i had. Now i want to retune but i want to get it right before hand. how much is it holding me back? I dont want to change the turbo for another 20 hourses...

 

i wouldn't be suprized if you could pull another hundred horses or more out of it with a .63 exhaust side & 3in exhaust