Gillette Diesel Fuel Pressure Spring Review
 

Just put in the fuel pressure spring from Gillette Diesel Service. After getting it up to 190*, it seemed to have a little more low end, off line response. :jump: Not bad for a $20 part,

No, I do not have before and after fuel psi numbers because it was easier to install the spring before work than the gauge. Sorry.

Now for the greasy stuff. I pulled the upper Techni-cooler line off of the elbow (you may not have to with the smaller OEM tubing), I also pulled the airbox to allow more movement of said tube. The radiator hose was a pain in the rear. Ended up using a #27 Torx on a ratching 1/4" box end for the lower screw that is nearest the rad hose. Including searching for tools and trying to find a proper course of action, it took about an hour to do it all.

In short, I'm happy with it. I'll let you know what psi I am running after the gauge goes in this weekend.

:c:

What are you using for a gauge? I take it you're still using the stock fuel pump and injectors?

I bought a Glow shift mechanical to electric psi gauge. I know it's not as good as an Auto Meter, but have you priced Auto Meter in cab fuel psi gauges? :bat: OUCH! All I really want is a general idea of where I am.

I was just curious to see what you are using. Some guys go off the gauges on the regulated returns, like the ITP unit. Just trying to figure out where you are reading from. I'm guessing you have it hooked up to the test port on the fuel bowl?

I bought the gauge because it's one of the few things that my Edge won't read. I had to get a metric to NPT adapter to put it into the the filter bowl. It will be on tomorrow afternoon.

UPDATE!!

I put over 200 miles on the Souper Doody over the weekend pulling my 18 foot flat deck trailer. Before the spring swap I got 12~12.5 with the trailer unloaded. I averaged 13.6 this past weekend. :jump: (It's a long story why I wasted 200 miles with an unloaded trailer:dang:).

Procrastinated putting in the gauge. Well, not really, looking for a car, truck club meeting, beer. Didn't leave much time for wrenching. I'll get it in soon, I'm pretty curious what my psi is, too.

:c:

hmmm :humm: Have you gotten your FICM reflashed by anyone that fuel milage kinda seems pore.. I got The Juice With Att Stacked with Diablo sport tuner and Gillette spring and FICM reprogramed by PHP and with J w/A on level 2 and Diablo on 60hp and pulling my 26 foot Donahue tripple axle goosneck trailer Loaded i get 14 mpg at about 75 mph :tu:... 2006 Ford F-250 6.0L:c:

Stacking on a 6.0 = :argh::ouch:

Running either one of those tuners that have NO transmission tuning and towing a trailer will result in a scrap pile of parts for your transmission as well.

the diablosport does tune the tranny and my tranny has never slipped:humm:

How heavy is that triple loaded?