ok i brought a 1990 supra that had bad valve seals car smoked but rann fine pull hard no problems but no after valve seals in no smoke but car starts runs drives but u get on it hits 4 grand and wont go no fether losses power i checked timing many times checked for boost leaks none from i can tell checked codes was showing 26 35 36 and few more i cant remeber can any point me in the right direction thanks