well this isn't totally stock either, it has a 4-2-1 header, a straight threw ex 2.5 inch, an intake, and I've just install turbo cam today just for the shits and gigles of it, I had the parts laying around, why not!!!! also this is just a beater car so I'm not plaining on doing some turbo or crap like that. it also has lowering springs, and stiffer struts, also some kind of engine mount upgrade, I know the thing has no wheel hop at all.. so that does all play a part.. I have a friend with a Z24 so I'll have hit him up, but I do know this I just smokes a 2000+ RS eclipse, and I know when I had my RS eclipse I raced a z24 and I had a hard time beating them, they were a littler faster, and I just took an eclipse by 1 1/2 car length, so hell I don't know..