what is the best bolt ons for the ecotec i have a k&n drop in and a flowmaster .

i/h/e (intake, header, exhaust)

motor mounts, transmission mounts, short throw shifter/b+m shiftplus

from there start doing some research in this forum to find out where you might wanna go with the car.

if your plans include boost for the future don't waste your money on the header as you'll need a different one for boost.

id say to start, intake, header, exhaust
intake: i have heard these guys are good http://cosmoracing.com/productinfo.asp?cid=130&pid=1026
header (make sure you dont say headers, we only have one): http://www.car-stuff.com/carparts/chevroletcavalier19822005pacesetterp4072c136056436.html
exhaust: depends are you going to boost it or keep in N/A. For boost ive read 2.5inch pipes, for N/A 2.25 is plenty. Just dont get crush bent pipes

also search is a good tool

Im still a noob so if anyone thinks i messed up with the info let me know.

dan

thanks i almost got the sunfire paid off ,so now i want just a few things done . Im going to stay n/a. so full exhaust and intake ok cool . would a tune help mpg ... or just power .

also whats the best bang for the buck exhaust ? i would love a turbo but i have 116,000 miles would the ecotec take it ?

miles really arent the only thing to consider.. how well has the engine/transmission been taken car of? how much boost?
i read on here that the LSJ 'balt exhaust flows the same as magnaflow, but is less than half as loud
http://youtube.ca/watch?v=OTIGe7IJgcY

http://www.j-body.org/forums/read.php?f=2&i=452463&t=452463

when i got the sunfire it was new and has had mobile 1 in it and hasn't had any problems.