phillyphan56

ok so i have a 99 cobra with a v-2 vortech setup with the maxflow powercooler system. just had a new O2 sensor, serp. belt, ,fuel filter, and efi/injector service done. but it still hesitates/bucks me around at lower range of rpm's. has 35,800 miles. plugs are autolite not sure on wires - done in 2002 with 20k miles (put on with blower). stock maf and throttle body i believe. 42lb injectors. i plan on doing a tuneup tomorrow with bosch or ngk plugs and wires hoping it will work. if it doesnt however what could it be?

livefast1

i dont think 99s have wires, i know 2vs dont 99 and up and im pretty sure your 99 4v has coil on plugs.

jhell00

don't get bosch! go with ngk! tr6

phillyphan56

oh right right im thinking of my old 98 with the wires my bad haha ok so ill look into NGK plugs hopefully it wont need new coils

livefast1

is the setup dyno tuned?

phillyphan56

yeah itwas when the blower was installed back in 02 with the autolite plugs 42lb injectors heavy duty fuel pump a chip provided by vortech and the computer was reprogramed. since then i put a full exhaust system on it thats about all i did mechanically the rest was show stuff