02gtwhite

I have a 92 coupe thats an original 5.0.. It has fresh rebuild with the stock forged crank and pistons with new forged rods. Bottom was built for boost. Also has ported gt 40 heads, gt40 upper and lower intake, full msd ignition. bbk shorties and h pipe ran to mac dumps. I have a NX wet plate kit. its already installed with the wot switch. My question is What size injectors and mass air should i buy before i have it tuned with and without nitrous? It has 19# now with a walbro 255 fuel pump

mjr46

the mods you have don't need nor require a tune..........how big a shot??

02gtwhite

150 to 200. I am thinking of 24# with 80mm mass air.

mjr46

since it is a wet kit you should be fine as long as you have a 255 lph pump in the tank. for the nitrous tuning since you are planning on running a 150-200 shot, go one step colder on the plugs and dial back base timing 4-6 degrees to be safe and run some high test gas

02gtwhite

Ok thanks man that will save some money for some other mods..