| You're better off running a LOWER rated fuel then a race gas for emissions testing. If you are on the edge (or failed and need a retest)-> *check your 02 sensors for proper function, ohm test your injectors, do a power balance test. *check for coolant leaks or bubbles (if the car is over heating it will effect test results) run the tank low on fuel. roll the timing back to ~13 (the spec is 15 +/- 2, some stations will check timing prior to testing) fill w. a few gallons of 87oct take emissions test. when you pass top off the tank w. premium fuel (91 or 93 if you can get it) and reset timing to 15.
 Bernie Bilski berniebilski@cox.net 1995 Nissan 300ZX TwinTurbo in Cobalt Green 1997 Nissan 240SX SE in Ultra Red ZCCNV #390 ~ ECZA #368 |