heres the deal. here is my engine combo. LB9 engine W/ tbi injection.
Mods= edelbrock manifold,k&n open element intake,longtube headers, 3" exhaust flowmasters muffler.3.73 gears t-56 tranny. soon to be put in lt1 cam w/1.6 rr.&ported heads.

now before i get everyone telling me i know i need my chip tuned. i am reading on it but the Q is can i bandaid the ecu with a 350 chip?? till i get my chip burning down.

what other mods can i or do i need ?

 

No real reason to run the 350 chip, your not moving the extra air over stock at all RPM ranges. The 350 chip might match up better at high rpm's, but the stock 305 tune is so rich that you would probably be ok anyway. Down low the 350 chip would pretty much flood out your engine. A cam tends to richen up the bottom end since the motor doesn't run quite as well down there. So a cam and the ecm thinking there are an extra 45 cubes isn't a good combo.

Your combo will probably start up and at least run ok, if not a simple BPC change will get you running. Seriously pick up the equipment, it's only a 150$, and start practicing. It should only take you a half hour or so to be up and running unless you run into issues regarding your laptop. If you take look at the "come in for a free tune" stickie I really lay out the steps for getting started.