1G Insight - Eco Kswap
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2001 Honda Insight
Engine K20, a2block/a3 head 11.5:1 cr, ARP studs Garrett GT2554r turbo HKS cast manifold 6psi Frozenboost air to water intercooler Exedy stg1 clutch Kpro w/AEM wideband 2.25 exhaust with 2 Magnaflow mufflers Transmission 1st. 3.266 2nd. 1.769 3rd. 1.147 4th. 0.872 5th. 0.659 FD 4.105 LSD Tires Toyo Extensa HP2 185/55/16 24"diameter A/C works JL JD400/4 and 1000/1 powering two JL 10W3v3 and four Polk Audio 6.5 speaker sets Goal of this car is to have a car that gets the best MPG possible while being super quick and great sounding for drive to work, 50 miles per day |
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Some may find some of this familiar as I have been kicking the idea around for a few years, this set up was originally for Insight, then was going into civic, but since I had the time I pulled off the Insight swap after all, car is running and registered, about to install Del Sol gauge cluster, tint and alarm and get it retuned, from then on I will be racking up miles and seeing what I can actually get away with.... this is definitly about having cake and eating it too
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It's been a bit of work but I'm finally putting some miles on her....... mixed emotions as while this is a very capable car when driven aggressively the car is a bit of a bear in the normal traffic duties..... I sent my money to Evans Tuning for his expert help..... EP3/RSX K20a3 Hondata base maps have many of features turned off and the only way to do things like change speedometer is to start with the K20a2 maps, this is getting done and I also need to figure out why my scangauge2 isn't reading the ecu..... I did have to run one wire to the OBD2 port for emissions so maybe I need another....
so far on 3 consecutive tanks (longest ever) I'm averaging 33 mpg +/- 3%, meh |
I imagine you drive a lot faster than I do. I have cold weather to contend with, but the vast majority of my driving is 35-45mph. Fuel economy starts to drop above ~45-50mph.
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I have some numbers....... all with AC ON
Commuting and daily life driving with no consideration to MPGs ........ 31mpg per tank Commuting and daily driving with all considerations for MPGs without impeding traffic... 35mpg per tank Driving to LA and back 80-90mph average ........ 39 MPGs This is with in the first 3000 miles so I still have a ways before my numbers mean anything but this is not a bad start, now I hope to improve the numbers and maybe slow down a little bit too. |
Wow, 11.5:1? Is that a JDM block?
Do you have electronic wastegate control? If not opening the wastegate might get you 1mpg. You could have a manual wastegate control cable in the cabin. |
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It's only @5.5psi so the easiest way to drive no boost is by light throttle. The car can be driven fast as a civic without hitting boost. |
Were I to do it again, this is probably how I would build mine. "Downsized" K20 and a small turbo. Phenomenal. With taller gearing, I bet mid 40's is achievable at those speeds - which is nearly what a stock Insight gets when driving that fast.
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How are your intake air temps?
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