TPMLE
Newbie
I recently did an intake manifold replacement on my 98 454 CCLB SRW, 4.10 rear. Also replaced the fuel injectors with 5-0 Motorsport Bosch injectors. Finally got a chance to do some Highway non towing trips and was averaging about 13 mpg at 70-75 mph. Usually saw about 10 mpg with the old stock injectors at same speeds. Towing my 7500 lb travel trailer getting about 8.5 mpg which is about the same as with the old injectors.
