What can be stripped ?

[Huli]

Re: What can be stripped ?

I may do that then. I really dislike that hose... its 3 feet long!

[sketchman]

It won't idle if you do that. It's piped into the intake so the VAF can see the air that's going into the engine through the IAC. I tried that first, and it wouldn't work. You CAN however totally remove the IAC and use the screw on the throttle body under a rubber plug to set the idle to clean things up a lot.

[Huli]

I was messing around with my built intake. I think I am going to move stuff around a bit later. Instead of piping the IAC into the intake tube, I am going to give it it's own push on filter mounted right to the valve body. Not for performance so much as cleaning up the engine bay.

[sketchman]

^Nice. Here's something. Guy says changing to a MAF didn't help peak too much, but did well under the curve. And he did it with a cheap hobby micro controller. I've had an Arduino that I haven't had a reason to put together and try out for a while now. Might have to pull out the soldering iron.

http://homepage.ntlworld.com/mx6-uk/massair/massair.htm

[Huli]

Re: What can be stripped ?



Pic as promised.

[Huli]

Re: What can be stripped ?

Nice link. Wish they followed up.

I swapped the VAF in my XR4Ti for MAF... that was a long time ago and it had a tuner box. I dobt want to go that route.

On another note, using 3 inch spectre couplings and some exhaust pipe; my intake is done. It rubs a little but makes a huge difference in upper end power. I popped a cell pic on the "daily" thread. Will put it here once I get my phone.

[sketchman]

Found the thread. It was iceracerdude. I wasn't quite remembering it right. He had a B6 in an Aspire running the controls that were already there, including the MAF.

http://www.fordfestiva.com/forums/showthread.php?32367-Festy-VAF-in-a-B6&p=373771&viewfull=1#post373771

[sketchman]

At the time I didn't understand what I was doing completely, so I interpreted an unstable idle as a bad IAC. Simple. Unplugged it and set it with the screws on the TB. Still wouldn't idle well, and it stumbled on accel. So I ramped up the ignition timing, adjusted the idle screws accordingly, and yanked the TPS because it appeared to do nothing and was wired weird(when compared to the repair manual I had). I knew just enough to be dangerous, literally.

The IAC being hooked up on an engine in good running condition should keep a stable idle at whatever temperature or whatever engine load, etc, and the TPS should help with accel enrichment so it doesn't bog when you stomp it. Mine was dying and I made it work however it would. Not really recommended now that I know better. But I was learning as I went.

[georgeb]

I was getting a consistent 37mpg with nearly no compression (like literally NO compression in cyl 1, and nearly none in any of the others) and doing varying speeds from 45-75 on my 40 minute commute.

If you hooked up the TPS or IAC or both, what would it do different?

[sketchman]

I'm almost positive I remember that a VAF works backwards compared to a MAF, so I doubt it would be a direct swap. However with a small hobby computer like an Arduino, I bet it's surely doable. But again, not a bolt-in affair by any means. There was someone who mentioned using the Aspire MAF, but he also was using the whole control system from it. Wire harness, PCM, etc.

[Huli]

Re: What can be stripped ?

Idle control? Weird!
Okay.... going to leave it then.
Thank you!

Is there a mass air flow meter that can be subbed in for our Vane flow?

[sketchman]

I was getting a consistent 37mpg with nearly no compression (like literally NO compression in cyl 1, and nearly none in any of the others) and doing varying speeds from 45-75 on my 40 minute commute.

[georgeb]

What is an eco robot?
Here's mine from a while ago. No CELs.
Oh, I was also running no TPS, and no IAC.

http://www.fordfestiva.com/forums/showthread.php?32712-CAI-Question

What kind of mileage do you get?

[htchbck]

Thats the idle control valve. Removing it will require capping off the intake port and manually adjusting the idle speed to where you want it. I think it also throws a CEL code but I'm not positive.

[Huli]

Re: What can be stripped ?

I want to do mine like sketchman. Just moving the VAF to in front of the valve cover.

The robot thing I am talking about is behind the engine on the drivers side of the intake manifold. The 1/2 inch tube off the intake pipe that does not go to the valve cover leads to it.