[mpcv2000]

I have a 91 octane , 93 oct and economical tune . Most passenger cars comes set up from the factory with a standard tune for regular driving with 87 octane. With my economical tune I can use it for long haul and save gas , the 91 oct. and 93 must be use with the right gaz but has a lot more stuff done to it like , fan turning on earlier and turning off later ( keep the engine cooler ) timing , knock sensor readjusted , speedo ( if ratio is different ), alternator off under certain load , air fuel mixture , etc..


My car has more bottom end them my buddy's 04 ZX5 , each time when we tried I pull in front of him 1 1/2 car and slowly reel him if we do a 3rd gear hiway run.