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  #1  
Old 10-17-2007
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fitch fuel catalysts?

any one ever tried them or do you guys think they would be a good idea?
http://store.summitracing.com/egnsea...115+4294924641
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Old 10-17-2007
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Dooooont buy!
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Old 10-18-2007
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why
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Old 10-18-2007
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Hotrod TV did a before and after on an engine dyno and it showed better mpg. I don't really know "how" you check mpg on an engine dyno. I think if held at a specific rpm it can read fuel consumption.

Past that, a mod either "makes sense" or doesn't. This one never made sense to me. It's also reasonable that a TV show can be influenced by advertising dollars.
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Old 10-18-2007
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Never heard of this one but it interests me.

Here is a interesting link:
http://www.fuelsaving.info/catalysts.htm

I did do the acetone experiment. Did it for 6 months on three different cars too. I concluded that it did make a difference. However motors with electronic fuel injection saw a minimal increase *at best*. They ran no different. The only time I could tell was looknig at the cars on board instant mpg readout. In certian sitations it did show a repeatable increase. But its not enough to go through the trouble of putting in 2-3 oz at every fillup.

Although... a carburated motor will show a supprising increase. My 87 MCSS saw a solid 2.5mpg better average. No joke.. it gained in hot temps and cool temps. Idled noticably smoother too. I had to actually lower the idle speed because everytime I ran it my rpms were 100higher. I went back and forth using/not using it just to prove it to myself. Sure enough.. it does indeed work.

My thoery on it is fuel atomization. A EFI motor does this pretty well by its design. But a carbed motor leaves a lot to be desired when it comes to keeping fuel droplets suspended in the intake charge.


Oh and for what it's worth.. a friend with a 05FX4 ranger tried the acetone thing for about 5-6 tanks and saw no increase.

Rich

Last edited by wydopnthrtl; 10-18-2007 at 12:26 PM.
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Old 07-06-2008
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anyone with firsthand experience with this? am thinking of trying it
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Old 07-06-2008
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Do naphthalene moth *****. Same results as with the acetone. Works wonders on carbed motor, but not so much on EFI.
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Old 07-06-2008
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acetone doesn't help much on efi. In regards to the Fitch fuel... it's kind of a shakey thing. I've seen a few tests that prove it does help and ones that show worse. The Hot rod test was measured as gallons per minute for the RPM's. If i remember right is was like a .05 gpm difference. and in the real world, that will take for ever to pay off and by the time it does you have to buy a new canister or whatever they are.
Honestly to save fuel just read some of the tests that other have done on this sitehttp://www.ecomodder.com ireally don't like throwing other forums out there, but i've seen 1 or 2 of you there already.
You can learn alot there
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