I've read numerous times that the si's don't have return fuel lines...that's why you need a wet shot when using nitrous...

I have a friend who says if you're car is fuel injected you need a return fuel line...
something about stabalizing pressure or something...so unless you're carburated you have a return fuel line...

can someone clarify exactly how the fuel system works on the si's?

 

There is no return line for the rsx or the new si.

 

Extra pressure is relessed at the fuel pump in the tank (or maybe fuel pressure is controled by the amount of volts sent to the pump...I just read a artical about this in a issuse of Honda tuning, I love that mag) It is a new thing in cars not to have return lines. It was first seen in the focus. The idea behind it is that with a return line the fuel gets sent the engine bay and some of that fuel gets dumped back in to the tank but it is hotter now then it was before because of heat from the engine, so if there is no return line the fuel will stay cooler so you will get more power and have less smog, witch means that it will pass new smog laws.

 

Thanks for all the help...Time to go prove someone wrong...