I been reading alot of post, and seen where some of you guys/girls are making 380 to 425 hp and getting 20 miles to the gallon. I am getting only about 12 mpg my setup is 302 b303, gt40p heads, gt40 intake, 70mm tb, 19lb injecters, fms headers into h -pipe, underdrive pullys, cold air, ac delete, smog delete and 373 gear, is there something I've done wrong? or need to change!
Thanks for any info.
Thanks for any info.