O.K. guys... just got back from Washington where I racked up 2430 miles over 9 days. Up in Kingston WA (near Seattle), I had time to install a fuel cooler up by the radiator which was part of the experiment that I am in the middle of and observed a 6% increase in MPG. Most of the gas bought was @ Cheveron or Union 76 stations with the exception of 1 <no-name> station which I noticed my truck running like crap pretty quickly so I filled up again w/chevron asap (post cooler fillup). On the way up it was a straight shot on I5 and on the way back it was around Olympia national park, along the WA & OR coast then trough Eugene over a 5200'peak towards Klamath Falls. I would have expected the straight shot to have better mpg's since there were no detours or sight seeing...

Here are the #'s (sorry for the column alignment... it is a DF thing wont let me use tabs)

date miles Gal MPG MPG corrected
18-Jun 218.3 17.327 12.598 13.695
19-Jun 245.3 19.074 12.860 13.979
21-Jun 241.8 19.272 12.546 13.638
23-Jun 253.6 21.350 11.878 12.912
23-Jun 122.5 9.6590 12.682 13.786
average 12.513 13.602
total fuel = 86.682

Fuel Cooler added
date miles Gal MPG MPG corrected
24-Jun 245.2 18.4 13.326 14.485
25-Jun 55.2 4.553 12.123 13.179
25-Jun 165.6 11.442 14.473 15.732
26-Jun 164.7 12.429 13.251 14.404
26-Jun 227.6 16.962 13.418 14.586
27-Jun 296.5 22.378 13.249 14.402
average 13.307 14.465
total fuel = 86.164

Speedo corr = 8.7%
Total Miles = 2430.8581
Total Fuel = 172.846
Avg MPG = 14.064
MPG delta = 1.06343


This mod put the cooler up by the radiator which is a potential hazard in the event of an accident, DO IT AT YOUR OWN RISK. Total cost was $40 for the cooler & $80 for fuel injection line & clamps. You will need approx 15' of FI line to do the install. If anyone is interested in details on how it's installed let me know and I will add more details.

The next step would have been to wrap the fuel rail to prevent heat soak, but the tape was not available where I was. I was lucky to find the FI hose.

The corrected data is what I roughly calculated as my odometer error. Three times I was radared by the roadside monitors & it indicated a -6~7 mph error in my speedo. On the trip through Oregon I decided to track how much error there was through the roadside mile markers & found a 4.3-4.4 miles error over a 50 mile stretch. So I split the difference & called it 4.35 = 8.7 over 100 miles = 8.7% error (someone can correct me if I'm wrong in my figurin').

A couple of other things to mention... I dropped off 2 of my kids when i installed the cooler so the gear & head count dropped about 300 lbs after the install. I figure in a 5500 lb truck, it won't notice it but I should mention it.

One final note... the last entery on the table of 296.5 included a stretch of 120 miles or so at speeds of 85ish (cough it wasn't me I swear man cough) since we decided to cut the trip short by 1 day & head home on Saturday night.

 

ttt (almost by request...)

 

wait steve i have a really stupid question. were was the thread for this and this is your 2001?

never mind, maybe if i pay more attention, i hope your not getting 14 mpg in your new truck

 

yeah, someone asked me about the fuel cooler and i though i'd bring this to the top in case anyone else was looking for a 6% increase in fuel milage... this was on the 2000, the 2005 is getting about 17

 

Good point about it being right in front of the truck, thats kinda sketchy in my opinion [&:] Cool mod though!

 

Wow, I must read more about this... Oh yeah steve, I still plan on buying your intake, unless you already sold it (if someone forks out the cash before me do it!). I'm in the middle of a big financial crisis and am trying to get out of it =( Will update you later about it

 

there are probably other ways to implement it but for the most effective spot it should be in the front. It is a potential hazzard!

the intake is still there, someone did ask about it though...

 

You still have that MSD kit? Whats all the stuff your selling?

 

nope, it was the 1st to go... (msd stuff)