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Unread 07-14-2007, 08:23 AM   #16
collkid
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Quote:
Originally Posted by gearheadjlm
I'm wondering if this engine properly built with a turbo would do better....

Turbo is only going to make things worse trust me....

Forcing more air into the engine will force more Gas to be used and burned.

There is no way a turbo can help your MPG

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Unread 07-18-2007, 09:39 PM   #17
michiganmaveric
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Here's a good article to read about gas milage. It basically says all the mod's are not worth it. Read the entire article. The tests were done in a TJ or XJ model Jeep. Very interesting stuff.


http://www.omninerd.com/2006/07/16/articles/57
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Unread 07-18-2007, 09:45 PM   #18
michiganmaveric
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Quote:
Originally Posted by collkid
Turbo is only going to make things worse trust me....

Forcing more air into the engine will force more Gas to be used and burned.

There is no way a turbo can help your MPG

I believe that turbo's do help in the gas milage department, but it would take years and years to recoupe the $3,000-$4,000 cost of modifing your engine.
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Unread 07-19-2007, 10:03 AM   #19
Happy Joe
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No matter what you do you are going to have to be able to at least modify the oxygen sensor output to the computer. If not it will readjust the engine back as close to the factory settings as possible or it will go into poor mileage limp home mode.
Once you get a box that will let you lean out the engine; your options expand, water, steam and vapor injection are proven to increase mileage and are relatively easy to home brew at little cost. (I got a 24% improvement (daily driving) with simple water injection (think large hookah) during the last gasoline hoax (shortage) but I had to remember to refill the water reservoir every time that I got gasoline (It would not run without the water). Resign yourself to building/experimenting yourself, most if not all of the mileage increasing devices on the market are overpriced frauds, IMO.
BTW, all mods of this kind are illegal and will cause your engine to fail at least the visual portions of a pollution test.
Enjoy!
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Unread 07-19-2007, 10:35 AM   #20
ryan89crx
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Quote:
Originally Posted by michiganmaveric
I believe that turbo's do help in the gas milage department, but it would take years and years to recoupe the $3,000-$4,000 cost of modifing your engine.
I believe you are thinking Supercharger. Most guys the run SC'd Hondas see 1-2mpg better mileage due to the fact that you have more power to get you going and there isnt so much load on the motor.

Personally, I lost about 2-3mpg city driving and 3-4mpg highway driving after turbocharging my Honda. And that was with a fully programmable ECU and custom tuning to lean out the partial throttle cruising. I don't see that being any different with any sort of chassis, but real world results speak louder than assumptions.
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