Fuel Economy, Hypermiling, EcoModding News and Forum - EcoModder.com - View Single Post - 1997 Civic CX to HX engine/VX trans swap! 63 MPG @ 62 MPH

MakitaDiesel · 03-27-2013, 06:13 AM

$400 is a bit high for my budget minded build, but if it eliminates the $ O2 sensor & $ EGR AND increases MPG then it may well be worth it. I'm running an Ultragauge so that function I would have to go back to a basic vacuum gauge or some other OBD-1 friendly instant readout. I'm new to tuned ECUs & am curious how one can delete these 2 important sensors & return better driving & mileage, my guess is at the expense of emissions.

Do you leave the 5-wire O2 in the bung or swap it for a simpler 1-4 wire?

Did the power/response increase as well?

I'm also curious if running a tuned ECU for a long period of time would affect engine longevity otherwise everyone looking for mpg gains would be after it...

Thanks for the info

Mak

03-27-2013, 06:13 AM	#122 (permalink)
MakitaDiesel The Practical Modder Join Date: Aug 2012 Location: Winston Salem, NC Posts: 38 Thunder - '85 Honda CRX Si 90 day: 44.84 mpg (US) Lightning - '89 Honda CRX HF Last 3: 46.25 mpg (US) The Darkness - '97 Honda Civic DX 90 day: 41.84 mpg (US) Thanks: 0 Thanked 6 Times in 4 Posts	$400 is a bit high for my budget minded build, but if it eliminates the $ O2 sensor & $ EGR AND increases MPG then it may well be worth it. I'm running an Ultragauge so that function I would have to go back to a basic vacuum gauge or some other OBD-1 friendly instant readout. I'm new to tuned ECUs & am curious how one can delete these 2 important sensors & return better driving & mileage, my guess is at the expense of emissions. Do you leave the 5-wire O2 in the bung or swap it for a simpler 1-4 wire? Did the power/response increase as well? I'm also curious if running a tuned ECU for a long period of time would affect engine longevity otherwise everyone looking for mpg gains would be after it... Thanks for the info Mak