yea it sounds perhaps like a fuel filter if its just something like loosing power. If the engine is missing youll know it. It will make sound. Also, since you have an e30 (and most likely unmodded correct?) you can go ahead and save yourself the money and buy 87 octane. These e30s have rediculously low compression pistons and relativly weak ignition timing and dont need high octane gas at all.
<span style='font-family:Geneva'><span style='font-size:14pt;line-height:100%'><span style='color:red'>Fox</span></span> <span style='color:gray'>the Pirate</span>
Diplomacy is saying "nice doggy" until you find a rock.</span>
I live my life one quarter mile at a time, and for those 23 or more seconds I'm free.