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Tofuball's '94 XFi; It's all about city MPG
Topic Started: Mar 12 2011, 08:59 AM (39,420 Views)
starscream5000
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Got 70 MPG?

Don't forget to brace the intake manifold Tofu. As T3 has mentioned before, without bracing you will crack those long runners.
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Tofuball
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Strange Mechanic

I have the brace and drilled the holes for it.
What you see is a mock up. I am not using those injectors.

I am going to try using Honda Insight injectors.
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t3ragtop
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Turbo3 and Twincam Tweaker

a late response, sorry.

suprf1y had sent me pics of the ends of various suzuki camshafts and the g10 is way different than the sohc 16v making the use of the late model cam angle sensor and housing incompatible.

turbohull use a gutted g10 distributor as a cam angle sensor on his turbo3/ sequential megasquirt2extra configuration. my project uses the space where the distributor lives for the water to air intercooler charge air piping which is why i developed my cam timing gear mounted "flying magnet"/ hall effect device cas.

tofu, your engine is looking good. 8 months isn't over the top for project development like yours. i'm 24 months into my project and i'm still pushing the development of my electronics packages. the mechanical systems seem to be easier to deal with but the real majik is in the controls.
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Tofuball
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Strange Mechanic

The injectors came - they're from the first gen insight.

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And will you look at that, they fit perfectly (same height, diameter, etc and all) and I was not expecting this, but . . .

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. . . the injector clips from the stock harness fit . . . (I still have to replace the wires, but I don't have to cut any clips off any other harnii!)

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You can see in the picture above the different "fogger" style of the injector :)
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bogs
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Duct tape heals all wounds

Nice surprise :)
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Tofuball
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Strange Mechanic

The last picture with the injector pointing at the camera, you have to click "view picture" and then show at full zoom so you can see the five orifices.
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bogs
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Duct tape heals all wounds

Tofuball
Dec 2 2011, 10:12 AM
The last picture with the injector pointing at the camera, you have to click "view picture" and then show at full zoom so you can see the five orifices.
To see them better you mean. I can actually see them in the picture in post, much easier to see when the picture is larger though :thumb
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starscream5000
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Got 70 MPG?

Dude, trim those fingernails already... :zombie1
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Tofuball
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Strange Mechanic

No way. Growing them that long was hard enough.
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Coche Blanco
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Troll Certified

Looking good :rocker
Edited by Coche Blanco, Dec 3 2011, 09:45 AM.
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rmcelwee
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Tofuball, I finally got around to reading this build thread. Very nice!

One question, a while back you started getting 58 MPG highway but I am not understanding what all you did to achieve this. I've seen mods thrown in here and there during the spare engine rebuild but I just can't get my head around what I can realistically do to my daily driver to dramatically increase my MPG (short of sequential injection and MS) like you did. I sold my XFI trannied MPG test car a while back and I'm currently driving a non-xfi '94. Thanks!
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Tofuball
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Strange Mechanic

Thank you!

I'm running pretty stock XFi except taller wheels, an advanced cam (one tooth), and a non-restrictive exhaust.

The mods I'm posting are for an engine and computer that isn't in the car yet.
Edited by Tofuball, Dec 5 2011, 07:45 AM.
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rmcelwee
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Thanks!

I'm with a few other people who thought advancing the cam by a tooth would equal crappy running car. Still not sure how you are getting away with it but if it works it works. I might try it on the XFI I am getting ready to look at buying.
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starscream5000
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Got 70 MPG?

I do that too (one tooth advanced) as well as an advanced cam gear. It's doable, but you can't give it a lot of gas or it starts pinging really bad.

Basically, doing it like this forces yourself into driving the car slow, thus increasing your MPGs.
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Tofuball
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Strange Mechanic

Lol. I have no ping. You don't need as much timing advance w/ cam advanced.
Edited by Tofuball, Dec 5 2011, 02:56 PM.
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