Re: Bar b18b in 94 civic
You HAVE to use an integra LS intake to pass BAR inspection. It cannot be modified in any way (cut, spliced, etc). Since the OEM integra intake won't fit under the hood like you've already found your choices are pretty much limited to using an aftermarket CARB aproved integra intake. I personally used a DC sports intake since it was cheap and relatively short but other types may work (ie: aem). Whatever you do though do not cut the piping or even the silicon hose as they are very thorough (at least the tech who did mine was) about verifying that the CARB stickered part hasn't been modified in any way. Good luck!