any one ever tried them or do you guys think they would be a good idea?
http://store.summitracing.com/egnsea...115+4294924641

 

Dooooont buy!

 

why

 

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.

 

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

 

anyone with firsthand experience with this? am thinking of trying it

 

Do naphthalene moth *****. Same results as with the acetone. Works wonders on carbed motor, but not so much on EFI.

 

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