HC,<br><br>How are those 275s for towing? Are they all you really need?

 

Anyone just running 275s? I would like to hear from you. What have been your experience with them ...how are they working ...are you satisfied?

 

Richard, I actually lost about .5 mpg with the 275's. I was pretty disappointed cause they advertise an increase. My computer says I increased 2 mpg but I think that is because it takes less throttle than before. <br><br>Unfortunately, I haven't done any long hauls yet since install but several short tows. Definitely more available power but won't know the true advantage until I pull a long grade which I haven't done yet.

 

I ran just my 275's for about 2 weeks as I sold the EZ. IMO they make the truck more fun to drive but are far from spectacular. I don't know what gains you have in mind, but if you want a bit more pep, they will be a good option. I also ran the EZ alone and it has quite a bit more seat-o-the-pants power. I also have an auto trans and was having problems accelerating in O.D @ 70. To be honest it was doggy. The Ez helped a ton by itself. The 275's did very little to help the situation by themselves, but together they were great.<br>If you think you will be happy with 40ish H.P then by all means get the 275's. They are about half the price of a box. But the reality side of it is the box is a much better deal.

 

jec3,<br><br>Yeah, I would be disappointed also. I thought the 275s were supposed to be better matched and therefore more efficient.<br>

 

Spark Chaser,<br><br>Thanks for the feedback. I question why you sold your EZ if it worked so well with the 275s.<br><br>My situation is that I want a little more performance but really don't want to add anything that is going to force costly transmission work.

 

I sold the EZ because I wanted an adjustable box for future mods. I plan on doing a DTT trans this spring then up the HP to the 450ish range. So, after consulting with a very helpful vendor, I bought the PM3 ;D<br>If you are thinking about spending 250-300 on 275's, I would up it a bit and get a box. Trust me, you won't be sorry

 

On an ETC my order of preferance would be the Comp, then the EZ, then injectors. The TST is a great box, but the Comp does every it does, and adds the timing of the EZ to boot.<br><br>There are benefits that boxes have over injectors. They alter the fueling curve which makes for faster spoolup and power deeper in the curve. They're much easier to install and remove - minutes vs. a couple of hours. Their reliability is a mute point, especially considering Edge's and TST's customer service.

 

[quote author=Ruralmedic link=board=7;threadid=8563;start=0#83275 date=1040503418]<br>I understand the Edge EZ and RV275 hp injectors compliment each other. The injectors kick in their performance at higher R'sPM, above 2000, whereas the box is increasing performance in the lower ranges. Together they're a team.<br>[/quote]<br><br>Yep, the two do compliment one another, however its in the other direction. The larger injectors will tend to beef up the bottom end, until the box starts taking effect at 1600 RPM.<br><br>I personally recommend a timing/fueling box (either Edge EZ if you plan on taking it easy, or the TST line if you plan on going semi- or full- crazy in the future ;D) as a first step. The box will move your torque peak down to the 1750-1850 RPM range, and then flatten it out until around 2700 RPM. What it does is gives you better drivability and a more useful torque range for towing and city driving. Then stuff some injectors into the mix to improve the bottom end response.<br><br>On the failure/reliability factor: We've had about a 1 in 150 failure rate on Edge boxes, and a 0 failure rate on TST boxes (we just picked up the TST line, so we haven't gathered any meaningful numbers). We've never had a failed injector, but look at it this way: If the box messes up, you unplug it and continue on your way. An injector install goes awry, and your truck is stuck on the side of the road waiting for a tow.<br><br>Rod

 

[quote author=rshelton88 link=board=7;threadid=8563;start=15#83519 date=1040579984]<br>My situation is that I want a little more performance but really don't want to add anything that is going to force costly transmission work.<br>[/quote]<br><br>An general rule of thumb here, and keep in mind there are exceptions to every rule: If your transmission is going to have problems, its likely going to have problems with the 275s as well. The lower end fueling boxes add 50 - 60 HP/150 - 180 torque at 1700 - 1800 RPM, but only 35 - 40 HP at 2200 RPM. The 275s will give you your same 40/150 gain at 1700 RPM as they will at 2200 RPM. So slippage issues are about the same between the two...<br><br>Rod

 

I really appreciate everyones feedback. It greatly helps in the decision making process for someone fairly new to the CDT arena.<br><br>Push Rod - Very informative. Thanks a lot.<br>By the way what's the significance of your sheep? Do you own sheep or just sort of like them? Cute sheep.<br>

 

[quote author=rshelton88 link=board=7;threadid=8563;start=15#83826 date=1040644698]<br>By the way what's the significance of your sheep? Do you own sheep or just sort of like them? Cute sheep.<br>[/quote]<br><br>The whole sheep story is here:<br>http://www.dodge-diesel.org/yabbse/i...;threadid=5060<br><br>I personally hate sheep with a passion. Stinking, smellin', fence crawlin' little beggars. But its in the name of high performance. The sacrifices we make.<br><br>Rod

 

(warning - long &amp; rambling discussion for those still trying to decide &quot;what next?&quot<br><br>Bull Dog,<br>I'm running 275's now with no box. I don't tow, but have a friend with an 2001 HO +275's, towing an 8000# trailer around the Ozarks, who is very happy with that set-up. Bear in mind; our roads are so curvy that pulling at 65 uphill is generally not possible and would be 10 over the legal limit. He's still got his stock airbox and exhaust, and I worry a bit because he doesn't have an EGT gage. His experience was VA w/o injectors, then injectors with out the box. He liked the injectors better, and says he's very satisfied now.<br>I'm VERY happy with just the injectors, but I am probably not &quot;normal&quot; among CTD owners. I bought the truck for mpg and reliability, not heavy towing. I tried boxes because I drive enough miles per year that even a 1 or 2 mpg improvement would have paid for the box in about two years.<br>The truck has so much more power than my previous rigs that I'm was completely satisfied with the stock power (until I tried the boxes). With my &quot;light loads&quot; and easy driving style, the boxes just didn't improve the mpg, while the injectors did help just a bit. The boxes also created more smoke at initial take-off, but I'd be the first to say that once the boost builds in the smoke disappears again. I've gone to &quot;no box, just injectors&quot; because I don't like leaving clouds when I take off and because that combination gives me the best mpg. I miss the extra power of the box, but I can still be happy even without it.<br><br>I have never seen a post from someone who put in RV275's, regretted it and want to go back to stock. Some do wish they had gone immediately to DDII's or other &quot;larger&quot; injectors. I agree the perceived &quot;kick&quot; from a box seems more than from the injectors.<br><br>I think those who are really wanting more power will likely end up with a box. But I would say, don't kid yourself about how easy it is to remove the box and &quot;fool&quot; the dealer; there is enough information stored in the computer that they can tell the box was there. Same is probably true for injectors. Be prepared to &quot;own&quot; the drivetrain warranty. Is that a bad thing? Probably not - the engine is bombproof anyway (no pun intended), and tranny's can be rebuilt. It doesn't make sense to be unhappy with your power for 100k just to keep a warranty in effect, especially when so many who have done NOTHING report having claims denied by DC for the smallest of perceived infringements (one guy changed his own oil filter, and used a &quot;Fleetguard&quot; filter that didn't say &quot;Mopar&quot; on the side). (Yes, I know they were &quot;wrong&quot;, yes I know they &quot;can't do that&quot;, but last I heard the battle was two months old and he was still without a truck.)<br><br>I would argue for &quot;injectors first&quot;, then add the box if still not satisfied. But once you get both, you'll probably be looking for some other upgrades too, either transmission or clutch. Also, my experience is based on manual transmission, 2001 HO. Vendors like Rod can tell you what folks with other types of rigs have reported to them; it would be wrong to assume that someone with an ETC, auto, would reach exactly the same conclusions I did.<br><br>Personally, I have gradually decided that I am happiest for now with injectors only. But boxes do have an advantage: A 30 or 60 day trial period during which you can change your mind and send it back if not 100% satisfied.

 

I have both the 275's and the EZ. After Christmas I will be pulling the EZ's out. I lost over 2 mpg with the injectors. Tried running with and without the EZ, no mpg difference. I think I bought a set of bad injectors but can't prove it. There is a power increase with the injectors alone, but plug in the EZ and you can sure tell the difference. I probably will end up buying a new set of 275's in a couple of months. It only takes about 1 1/2 hours to do a swap over. I want to check my milage with just the EZ and see what it does.

 

From everything I'm hearing the EZ will throw off the mpg reading on the overhead mpg computer reading. It reads higher mpg than actual mpg.<br><br>Can anyone that is running only RV275 injectors who has an overhead MPG computer tell me if the readout is accurate when running the 275s? This is a convienient feature if in deed it can be relied upon.