LS1TECH - View Single Post - Will I notice a difference between 3" and 4" intercooler piping?

pmbmax · 03-30-2009, 09:13 AM

A 90 mm is 4 inch on the od not the id and a 105 is closer to the 4 inch ID . If you run a 4 inch up to a 90mm a 4 inch hose works perfect for a conection but the tb is smaller . I think that a larger pipe makes the car respond off boost better. I would run it if there is room.

03-30-2009, 09:13 AM	#13
pmbmax 8 Second Club Trader Rating: 0 Join Date: May 2004 Location: Savannah, TN Posts: 374	A 90 mm is 4 inch on the od not the id and a 105 is closer to the 4 inch ID . If you run a 4 inch up to a 90mm a 4 inch hose works perfect for a conection but the tb is smaller . I think that a larger pipe makes the car respond off boost better. I would run it if there is room. __________________ 2004 Pump gas drags most consistent 10.512 10.519 10.513 2006 Pump Gas drags top ten (6th place)