no164ford
Registered User
I have a 1990 T-bird SC when I bought it it was getting about 12.5-13 lbs of boost. Then I installed a 10% OD K&N cold air intake and underdrives my boost was 14-14.5 then. A few years later I blew the head gaskets so when I did the heads I did a major port and polish, resurfaced the heads, valve job with 01 mustang MLS head gaskets Arp studs, mid length knooks coated headers no cats no rez and flowmaster mufflers and a dubble I/C. My boost then droped to 9.75 tops and it seemed to loose bottem end power but yet it seemed to be faster. So the next thing I did was get a mass air out of a 94 SC then I cut out the post and installed it, It brang my boost up to 10.25-10.5 lb. Now the last thing I did was ported a 89-93 blower (a diffrent blower not the one in the car) to some what look like the the new MPIII without the wings also custom built plemum (made out of a stock 89-93) and a 3/4 top with 42lb injectors. And now I am lucky if I can get 12lbs of boost. The car does run a s%#! pile better then stock, but why is my boost so low???