Attention: TDR Forum Junkies 
A few weeks ago I mounted 12 air-tabs across the top of the cab about 6 inches forward from the rear edge. First thing I noticed was that the rolling affect in the bed (what little there was before) is now non existent.
Last night I mounted an additional 14 of them across the hood of the truck. They are centered with 7 per side. They set back 20 inches form the transition line of the nose piece to the hood. I also mounted one on each side on the door down at the rocker panel. These are to check out the air flow patterns as the truck gets dirty.
The reason for the experiment is that the acrylic but deflector while nice looking, did not work real well. At 60 mph the bugs would get through and when using the windshield washer, the water would blow everywhere in the tumbling back currents of the airflow produced by the bug deflector. Also, Oregon is notorious for using gravel on the road that will rip up a windshield with big stars and cracks. So we are trying to see if we can eliminate rock damage along with the bugs.
Results so far Oo. Encouraging to say the least.
The airtabs mounted on top have a little over 2,000 miles on them now. The rear window does not get dirty nor does it mist over while driving in rain. Mileage wise, I'm still watching for an improvment. I won't really know untill my next long trip over to Idaho. My last tank came it at 21. 22 mpg.
The ones on the hood have proven interesting in the few hours they have been mounted. I did a 16 mile run at 60 miles an hour. First thing I noticed was that the windshield washers will now put the water all the way to the top of the windshield without any distortion in the spray pattern. I'ts like your standing still when they are turned on. So the airtabs are definately kicking the air up over the wind shield. Next thing I notices was no bug hits!
I did have two bugs that came in on the driver side that were deflected outward away from the windshield at about 30 degree angle. Encourgaing to say the least.
Today on my lunch hour, I took the truck down and had it washed down real good so I have a base line for dirt patterns and bug splats to go on. I would like to attach pictures, but it appears that I would need to have my own web site to do so, if I understand the directions in the TDR site.
I spent Saturday with John Holmes down at the Canby Fair Grounds. He gave a great lecture on the (Why we own Diesels). There were about a dozen people there. I was able to give a couple of them a ride in my rig to show them the difference between a boosted truck and one that was stock by turning the EZ-Comp completely off and then back on. I was unable to attend today as I have to work, but will see him again tonight after work and show him the affect since yesterday. So this messages is sent out in a moment of hooky from the job. As I put on more mileage and the rainy season comes in this next month, I will let everyone know what the results are. So far I'm happy.
One other note; it might be my imagination and then again maybe not. The truck does not seem to drift from side to side like it did. More to come on this subject later.
Oo.
Last night I mounted an additional 14 of them across the hood of the truck. They are centered with 7 per side. They set back 20 inches form the transition line of the nose piece to the hood. I also mounted one on each side on the door down at the rocker panel. These are to check out the air flow patterns as the truck gets dirty.
The reason for the experiment is that the acrylic but deflector while nice looking, did not work real well. At 60 mph the bugs would get through and when using the windshield washer, the water would blow everywhere in the tumbling back currents of the airflow produced by the bug deflector. Also, Oregon is notorious for using gravel on the road that will rip up a windshield with big stars and cracks. So we are trying to see if we can eliminate rock damage along with the bugs.
Results so far Oo. Encouraging to say the least.
The airtabs mounted on top have a little over 2,000 miles on them now. The rear window does not get dirty nor does it mist over while driving in rain. Mileage wise, I'm still watching for an improvment. I won't really know untill my next long trip over to Idaho. My last tank came it at 21. 22 mpg.
The ones on the hood have proven interesting in the few hours they have been mounted. I did a 16 mile run at 60 miles an hour. First thing I noticed was that the windshield washers will now put the water all the way to the top of the windshield without any distortion in the spray pattern. I'ts like your standing still when they are turned on. So the airtabs are definately kicking the air up over the wind shield. Next thing I notices was no bug hits!
I did have two bugs that came in on the driver side that were deflected outward away from the windshield at about 30 degree angle. Encourgaing to say the least. Today on my lunch hour, I took the truck down and had it washed down real good so I have a base line for dirt patterns and bug splats to go on. I would like to attach pictures, but it appears that I would need to have my own web site to do so, if I understand the directions in the TDR site.
I spent Saturday with John Holmes down at the Canby Fair Grounds. He gave a great lecture on the (Why we own Diesels). There were about a dozen people there. I was able to give a couple of them a ride in my rig to show them the difference between a boosted truck and one that was stock by turning the EZ-Comp completely off and then back on. I was unable to attend today as I have to work, but will see him again tonight after work and show him the affect since yesterday. So this messages is sent out in a moment of hooky from the job. As I put on more mileage and the rainy season comes in this next month, I will let everyone know what the results are. So far I'm happy.
One other note; it might be my imagination and then again maybe not. The truck does not seem to drift from side to side like it did. More to come on this subject later.
Oo.
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Yes sir, these are in fact the same tabs that are used on the big rigs. I'm a direct dealer. (I guess I'm allowed to say that on the forum). As I understand it, I'm not allowed to discuss price on the forum, with that said though my email is -- email address removed -- - or - -- email address removed --. I will be happy to tell you how much via those two routs or through the forum private mail line. I'm going down to Canby tonight after work to see John Holmes before he head back to his ranch and let him have a look see at what I'm doing. He is the one who wrote the article in TDR on these. 
not quite the way I had hoped for. You will recall that they are mounted 20 inches back from the nose of the truck. You can see the water being thrown up out of the tabs to a height of about 7 to 8 inches and it winds up depositing the water at about chin level to the driver. This is at a speed of 60 mph. Bug pattern is that nothing big seems to get through. Small ones how ever, coming in just above the hood line seem to be dispersed in an even pattern across the entire windshield. So I'm happy that the big ones don't seem to make it through but some what disappointed about the little ones and the rain. 
