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California98Civic · 08-06-2019, 12:13 AM

Don't cut holes in good stock equipment without total necessity and commitment. There is debate about CAI and WAI intakes. The CAI is for power (opposite of FE most of the time). The WAI usually is thought of as power *reduction* with a fuel economy increase. The increase theoretically comes from reduced pumping losses. I run a WAI that I tested and am reasonably confident works to increase FE, but my Civic has the DX/CX/LX style intake that went with the D16y7. With a VTEC-E (D16y5?) you probably do not want a WAI, unless you plan to do a lot of P&G instead of cruising in lean burn.

EDIT: I SHOULD HVE READ MORE CAREFULLY... i SEE YOU NAMED THE ENGINE YOU HAVE ... 3 STAGE IS COOL. yOU HAVE A BUILD THREAD SOMEWHERE?

08-06-2019, 12:13 AM	#2 (permalink)
California98Civic Cyborg ECU Join Date: Mar 2011 Location: Coastal Southern California Posts: 6,299 Black and Green - '98 Honda Civic DX Coupe Team Honda 90 day: 66.42 mpg (US) Black and Red - '00 Nashbar Custom built eBike 90 day: 3671.43 mpg (US) Thanks: 2,373 Thanked 2,174 Times in 1,470 Posts	Don't cut holes in good stock equipment without total necessity and commitment. There is debate about CAI and WAI intakes. The CAI is for power (opposite of FE most of the time). The WAI usually is thought of as power reduction with a fuel economy increase. The increase theoretically comes from reduced pumping losses. I run a WAI that I tested and am reasonably confident works to increase FE, but my Civic has the DX/CX/LX style intake that went with the D16y7. With a VTEC-E (D16y5?) you probably do not want a WAI, unless you plan to do a lot of P&G instead of cruising in lean burn. EDIT: I SHOULD HVE READ MORE CAREFULLY... i SEE YOU NAMED THE ENGINE YOU HAVE ... 3 STAGE IS COOL. yOU HAVE A BUILD THREAD SOMEWHERE? __________________ See my car's mod & maintenance thread and my electric bicycle's thread for ongoing projects. I will rebuild Black and Green over decades as parts die, until it becomes a different car of roughly the same shape and color. My minimum fuel economy goal is 55 mpg while averaging posted speed limits. I generally top 60 mpg. See also my Honda manual transmission specs thread.