Header banner
Revain logoHome Page
David Plunkett photo
1 Level
1385 Review
85 Karma

Review on Fitch Permanent Fuel Catalyst F5T - Enhances Fuel Efficiency with Innovative 'Drop in Tank' Technology by David Plunkett

Revainrating 5 out of 5

Not a chemist but seems to work

I'll start by saying that I'm not a chemist, I'm not a materials expert and I'm not an engine expert. I'm just a regular user who happens to be a strength athlete, so I have some experience with snake oil claims for automotive performance enhancers. mpg boosts claims with all sorts of crazy, non-empirical miracle products that turn out to be nothing. However, I decided to give John Cooper Fitch's fuel handling a try as I am a fan of his other track and race based safety developments. Got an F5T kit and decided to test the FFC with one catalyst cage in my '00 Suzuki SV650 and another in my mother's '99 Ford Escort tank to see if either of them had any effect (recommended as in to use a motorcycle tank). and in a special mounting block for Escort). Both cars can withstand ambient temperatures of up to 90 degrees on a daily basis, so large numbers of light fuel molecules vaporize in any air that hits the fuel. Both cars run on a mix of 3/4 Oct 89 fuel and 1/4 premium grade fuel (prevents pinging in the heat at no extra cost). Both cars receive regular routine maintenance and have no other performance upgrades than they currently have (bike is fitted with fuel injectors and piping, the Escort CVH inline-four 2.0 liter engine is fully stock except for the spark plugs) . bosch). I'm not sure if it was scientific, but the only change in normal operation of each vehicle was the addition of FFC with less catalyst than recommended. With a skeptical hat, I drove both vehicles with fresh fuel and noted whether, if at all, they behaved differently until the next gas station. As always used the same station on the same pump for both. Motorcycle: My SV did 190+ miles on 3.5 gallons of fuel prior to FFC, so it wasn't bad for the economy. But I did notice that the bike was much more consistent at idle, hot or cold, and a newfound ability to pull away at idle without the expected little stumble it coughed up that I was so used to. It was unexpected and very pleasant. The first tank of FFC saw a slight improvement - about 1% or just under 3 miles from the same 3.5 gallons. It's not a win that can be directly attributed to the FFC, as for almost 200 miles it's too small not to attribute it to ambient temp/humidity or a few hard rolls. But the bike is noticeably easier to ride now and feels a little less stressful at certain rpm. Since two F5T cages are supposed to handle up to 10 gallons, logically one should handle 5, and my tank holds 4.2 gallons total. So maybe he didn't need two to do his job, but now I'm curious if one more behavior would make a difference. By the way, there are still no problems with it and the fuel filter in the vacuum valve. Car: First of all, the Escort has a filler neck bend at the junction of the neck with the tank, which prevents the F5T cage from collapsing. - so it bothers the throat and makes it difficult to pour a small amount. Teaches me to ignore mana. Recommendations! But it seems to dip into the fuel as I've noticed a change. First, the same effect as a motorcycle - the idle is smoother, quieter. I noticed a slight increase in fuel consumption, but more noticeable than that of a motorcycle. On full economy mode (no air conditioning, 55 mph in the right lane, properly inflated tires, no extra weight) he struggled to maintain 21mpg with his old SOHC 2V CVH Four. When the air conditioning was used when the time came, it dropped depressingly to teenage levels. After the FFC was added, however, I noticed a significant increase in fuel economy: I got 21mpg with the air conditioning on. In Economy mode, fuel economy was 23mpg, an 8% increase. This is with an engine (although slightly used and in fair condition) with almost 90,000. It will never be a Prius. but I get 2mpg for a one time investment of $50 any day of the week. Another cage in the filler neck is out of the question if you have a clogging problem. but now I'm really thinking about a built in kit. Something's going on, and no amount of wishful thinking is going to save you 2 mpg on traffic here. I haven't changed an OEM O2 sensor yet, which might be even more profitable. BY THE WAY. on the fourth pot since the FFC was called and the win stayed. Verdict: For a bike, the F5T kit is worth it, even if the mpg gain is minimal - you can tell how much you're compensating for uneven throttle response when you no longer need it. Not sure if a sportbike (5 gallon capacity or less) needs both cages as there have been many changes with just one unit. For the car. Even with far less catalyst than recommended and not in the ideal spot, I got a solid 2mpg. Satisfied. :)

Pros
  • Inspires confidence
Cons
  • Appearance