I'm curious if running the 88-89 integra ecu (PG7) will make a noticable difference between the stock si ecu (pm6). Wondering if the PG7 is really that much more agressive than the PM6. thanks

 

Yes. A huge difference. Think about it.

The D16A6 is a single cam engine. The Integra's engine is a twin cam engine, similar to the ZC.

Which ECU is gonna supply more fuel?

You also get a higher rev limiter.

 

yeah well i kinda figured that of course the pg7 ecu is gonna supply more fuel, which probably means a noticable difference in performance.

 

yes
PG7 will make a difference
specially since the Fuel maps are more agressive...
higher rev limit and no it doesnt have a speed limiter!