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68 Suburban · 11-03-2003, 05:04 PM

15 mpg is really not to bad for driving a brick wall. HEI would help. Before you invest a lot of money. Figure out the cost and effect of the change. It really would be silly to spend $1500 to get 1 or 2 mpg better. Unless you do a LOT of driving.

11-03-2003, 05:04 PM	#4
68 Suburban Registered User Join Date: Oct 2000 Location: From Chicago, Live in Phoenix, AZ Posts: 6,802	15 mpg is really not to bad for driving a brick wall. HEI would help. Before you invest a lot of money. Figure out the cost and effect of the change. It really would be silly to spend $1500 to get 1 or 2 mpg better. Unless you do a LOT of driving.