I currently own a 03 Z w/36000 miles, I have a INJEN cat-back which sounds MEAN as hell, and just purchased a INJEN CAI. Now should I reset my ECU to get proper gains?? Now I'm Looking to do some more N/A upgrades but i read through plenty of threads and it sounds like its not worth buying a crankshaft pulley,headers,down pipe,cat, because those Z's parts are more than suitable for street racing. Minor DYNO improvement compared to stock parts. Considiring...Would a ecu flash,plenum spacer and flywheel be a smart idea for some power and would i notice the diffrence??

 

i believe your ecu will eventually learn to adjust for your mods...the ecu reset will just make that process a little quicker by forgetting what your ecu learned without the mods.

i'm guessing, you're not considering FI. ecu flash, plenum spacer, and lightened flywheel are good and you will notice the gains. if you don't want test pipes, you may want to go with high flow cats.

 

yes, big diff.

 

FI? not sure what that is...forced induction?? What type of ecu upgrade would you recommend?

 

yeah...FI is forced induction
i would recommend uprev osiris...but i'm biased since that is what i went with (and am very happy with)
browse this tuning forum for other options

 

i looked up that uprev osiris and it sounds good...is it as easy as it says to install? Just plug and play with a lab top? They also said that no chargeto reflash over if more parts are installed. Thats a sweet deal