hey i hav a 1990 rx7 turbo, i hav a few questions about it. first for some reason my car every time i start it it'll idle really bad until i give it some gas and warms up. when i drive it when i stop it'll go back to that bad idle and shut off not all the time.... maybe water in the gas i dont know?? need help because its really annoying! also i was looking into buying an upgraded turbo any suggestions on what to get . and whats some upgrades i need to do before installing it?? i hav a full racing beat exhaust and an intake... not much.

 

check for vac leaks. for an upgraded turbo you will probably need a stand alone...rtek at the very minimum for a hybrid.

 

Get if fixed first. Try turning on the AC so it doesn't stall for now.
If you have to ask what mods you'll need for an aftermarket turbo then you are far away from making it happen. Kepp reading!