When I first started to read DTR daily in January of '04, a new product called TAG was introduced. Some members were skeptical of it, and others praised it.

I was wondering if in the last few months any owners could update their opinions about it? Did it work as claimed? Was it worth it, and would you buy it again? If yes, some explanations would be appriciated.

Thanks again,

Procrastinator

 

Try this one

https://www.dieseltruckresource.com/...ferrerid=24381

 

I'd really like to know if somebody has installed a TAG on the secondary turbo of a twin setup. When I look at the average twin setup I can imagine that the air could be quite turbulent there.
Maybe even a back to back test with drive pressures and boost curves...

AlpineRAM

 

That would be an interesting test Alpine. Now get to work on it for us.

 

John Holmes one of the writers for The Turbo Diesel Register (TDR) wrote this about the TAG in issue 44 on page 111, under testing new stuff.

"In the last issue, on page 158 in the TDRelease section, Robert introduced you to the Turbo Air Guide (TAG). Dave Meheen, of Diesel Power Products in Pasco, WA, sent one down to Carson Dodge for me to test. I selected our ‘02 because it is fully instrumented for testing such products. The installation was about the easiest of any aftermarket product I’ve ever tested. Just snap it in the rubber boot that feeds the turbo inlet.

It was interesting to see what happened from this simple honeycomb looking piece of metal. Whether it be Airtabs or Turbo Air Guides, the study of air flow is fascinating. This gadget is basically an air straightener. The air coming through the flexible boot is curving and bouncing around over the "ribs" in the tubing. The TAG gets the air flow straightened out and feeds it into the compressor of the turbo so that it doesn’t "fight" the turbo in doing its job. This cuts drag and noise while decreasing turbo spool up time, plus it increases engine performance/efficiency.

I didn’t get quite the dramatic results that are cited in Meheen’s technical literature, however, that may be due to our altitude...we’re sucking in less dense air. We have a 6% grade close to our ranch that I used for the "pulling" part of the test. It was a calm, 42 degree day. I made three runs each way across a five mile flat and then up a two mile grade, first stock to establish my base line, and then with the TAG.

As predicted, I found only a slight improvement in the flats at 70 MPH. I averaged about one pound reduction in boost, around 25 degrees in EGT and surprisingly ½ pound increase in fuel pressure. With such light loading I was showing only 500 degrees and eight pounds boost at 1825 RPM without the TAG.

When working the engine harder, I got more dramatic results. On the grade, at 65 MPH, I saw a drop of 75 degrees in EGT, three pounds of boost and a full pound increase in fuel pressure. I might point out that on the grade I still wasn’t working this truck very hard. Without the TAG, I was showing 20 lbs and 700 degrees. With a loaded trailer I would have been at 30 lbs and 1000 degrees. Note that the increase in fuel pressure with the TAG shows the engine wasn’t working as hard as without it.

I noticed quicker turbo spool up, not just by the seat of the pants, but also in how quickly the boost gauge jumped up. The thing that really got my attention was the noise reduction. Our ‘02 has always had the noisiest turbo of any of our five Rams. Not only did the TAG greatly reduce the whine of the turbo at high levels of boost, but it almost completely eliminated turbo "stall" or "surge"....that loud sneeze/snort sound you get when you come off the throttle quickly after having your foot in it. For that alone I’d buy the thing!"

Brian Rogers, another writer for the TDR posted another article in issue 44, page 150 complete with dyno runs and observations. I hope this helps answer your question.

 

Car_nut57: I read the last thread with you quoting the favourable articles about the tag and can accept it because you are a vendor and want to harp about the benefits of your product. But when I do ask a specific question on a forum I do expect the standard range of answers from the normal users, butt very precise and correct answers from the declared vendors.
When I ask for results on a twin setup in a certain position it annoys me to read the same article that is quoted by the tag fans all day and night. If you as a vendor have the experience with a situation as stated by me then feel free to publish results, but don't think that I ever asked you for a thinly disguised TAG commercial.

Thanks a lot

AlpineRAM

 

AlpineRAM,

My post was responding to the original thread only. I cannot respond to the twins situation as we have not tested the TAG at all on any twin setup. If you have a twins set up or know some one who is doing one who would like to test the TAG with twins, please let us know and I will be happy to work with you or them.

 

Does the TAG have much effect on the 2004.5 600? "baffle in the pipe from the factory" from Scotty DTR

 

Scotty put one in his truck and he said it worked. It's in the 3rd gen high po forum.

 

Those who are using the TAG on the 04.5 trucks have reported pretty much the same results as the 03-04 trucks, but results do very some from truck to truck.

 

How much do one of these things cost? I must have missed the thread on it because this is the first I have heard of it.
Thanks
DM01

 

Check them out here- http://www.dieselpowerproducts.com/tag
I wouldn't be without a TAG. It doesn't seem like much difference when you put one in but if you have it in for awhile then remove it the difference is amazing. Almost seems like something is wrong with your engine without it.
The TAG may not change numbers much but the engine just feels snappier (for lack of a better word)

 

Where have you been DM01? In a hole?

 

Sorry if I sounded a little snappy- no offense intended.
I'm not working on a classical twin setup at the moment.

AlpineRAM

 

I am interested too, wonder when they will go on sale . I would give one a try. Rick