A lady at our barn has an 04.5 crew cab long bed 4x4 dually automatic. Unloaded she gets 13mpg on the highway. The dealership put the $1500 "economy" injector in for her and the mileage got worse. Go figure. I was looking into the rokk tech sensor for her to try and get some better mileage. She's worried about warranty but I don't know why after they told her that it "doesn't get driven hard enough and to much idle time" line. Would this mod be worth it for her? I don't really feel comfortable doing it myself since it's not my truck. I'm trying to talk her into an intake and free flowing muffler but once again, she's worried about warranty (dealership said they'd void it). I figure the rokktech sensor would be completely undetectable and if it would help mileage at all, that would be great. Thanks for the help yall.

P.S. Refresh my memory but don't the 04.5's have a full 4" exhaust at least from the down pipe back? Thanks.

 

Man I hate idiot dealerships. What a bunch of jerks. A muffler and air intake will void her warranty? I would tell them to go stuff themselves and never go back again. Do the tone ring mod for her, It's free and easy. The idiots will never know.

Yes 4" the hole way.

 

I would but I'm not comfortable doing something like that on somebody else's truck. I'd rather just buy the sensor and install it. If I could find some really good instructions, I'd do it myself.

 

BB,

Yes the system is 4" from the turbo all the way back. That really blows about her dealer saying air and exhaust would void the warranty. I think it is time she found a new dealer.

I am about to get the Rokktech sensor myself if I can ever get them to call me back. You can put it on for her, but just keep the old sensor. If there is ever a problem, just put the factory one back on.

But, like Gatf4 said.......it would be highly unlikley those idiots would ever even know.

 

Get the Rokktec, its a peice of cake to install. The instructions supplied will show a rank amateur how to do it. It worked on me!
Took me 10 min. to do and I gained 2.2 mpg omn an 03 ho. I was a little scared to do the tone ring and I'm glad I did it this way.

 

I just installed the Roktech on my '05 and it was a 10 minute job, very very easy. You will need a bit of blue Locktite and a 5mm allen wrench and that's it. The instructions come with a good picture that shows the whole enchilada. The biggest change I have seen is lower egt on the BD Outlook; I have not driven enough to test the mileage aspect yet.

 

I just installed the sensor and knowing what I know now, I would never touch the tone ring. I ordered mine and it showed up in three days and i had it on ten minutes later. Picked up a solid mile & half to two miles per gallon. I kept my old sensor and I have it with me with a 5mm allen wrench so that if it has to go to the dealer in a hurry for engine problems, I will swap it out before the tow truck gets there. It does make all the difference in the world. I also have an AFE stage I and muffler delete and the truck runs better now with 295's than it did brand new with 265's.

 

Please pardon my ignorance and this hijacking, but do the Rokktech sensor and the tone ring modification do basically the same thing, namely change injection timing? Is the Rokktech easily adjustable and its installation fully reversible? If so, that's the way to go for me. Now back to your regularly scheduled programming...

 

You've made me curious. What exactly is it that you now know that would make you "never touch the tone ring"??

I'm sure the ring tone sensor works just fine, but I didn't see the need in spending $70 to buy a new sensor when I could accomplish the same thing by enlarging a single hole in the tone ring.

 

Are you guys adjusting timing on the modified sensor by ear or do you use other tools. I've used a timing light on a gas engine before, but I'm not much for use when it comes to actually getting one to run right. Is it hard? You'd think a man with my degree would know, but I don't have much hands on when it comes to inition or systems of the like.

 

They do EXACTLY the same thing except that one is free and one will cost you $70. Both are fully reversible and the tone ring mod is easily adjustable. I don't think there's any adjustment in the Rokktech sensor but I could be wrong.

Blue, I'd do the tone ring mod on her truck and see what difference it makes. It's VERY simple to do. If it doesn't work then it takes all of 5 minutes to put it right back where it was before.

 

No other tools are necessary with the modified sensor OR the modified tone ring.

 

Correct me if I am wrong, but to do the tone ring mod, you have to enlarge a hole. My fear is that if the motor was to ever be torn down for work and "they" saw this then "they" might try to claim that whatever the problem is, you caused it. With the sensor you can remove it and reinstall the old one and no one knows. As far as adjustment, you can rotate the Rokktech sensor down towards the bottom of the motor to retard the timing. They give you all the information that you need with the sensor. I never talked to Rokktech when I ordered mine.

 

With the tone ring mod you are "enlarging" one side of a slot approximately 1/16th of an inch. The chances of anyone ever noticing that are very low in my opinion. In fact, they would probably have to have two tone rings side by side to be able to tell the difference.

Look at the pictures in THIS post. The difference is hardly noticable (and 4x4not cut out 1/8" instead of 1/16"). Also, keep in mind that we're talking about a hole with a diameter of approximately 1/4 of an inch. When you enlarge the slot it is still only about 5/16 of an inch. Those pictures are larger than the actual size.

 

I completely understand what you are saying, but when you have a brand new $7000.00 Cummins, I do not want to take any chances. For $70.00, I think it is cheap insurance. Just my 2 cents.