I have read that some people use spacers on the engine, does that really help? The only reason I ask is because the guy at Advance Auto told me that spacers dont work on fuel injected engines. I plan on doing the following basic mods to my 1990 Honda Accord dx coupe:

-f22a1 engine
-f22a6 camshaft
-h23a1 intake manifold and throttle body
-f22a6 ecu
-remove butterflies from h23 mani.

I already have I/H/E and cat delete. Does anyone know if this setup is even worth having tuned or will it make a difference?