Engine/Transmission (1998.5 - 2002) DD2's and Edge EZ

[Mingoglia]

I have a '01 3500 5sp that I use mostly for towing. I'm running at/slightly over GCVWR. I currently have a Edge EZ and gauges... . everything else is stock.



I've spent the last few hours searching threads for this answer but I haven't found anyong that has exactly the same situation as me so I figured I'd ask. Am I going to have any problems with EGT? I live in Phoenix so I tow up several mile long 6% grades going in/out of the valley as the temperature exceeds 115 degrees. I've found that my truck runs about 300 degrees cooler with the Edge EZ than stock... but I'm sure that will change drastically with the new injectors.



How about clutch? I'm planning on replacing the stock clutch (has 38,000mi right now)... . is this something that will *have* to be done *first*? ... or can I limp along if I'm careful for a little while with this setup?



Also, the age old question, "About how much power will I be making with this configuration?" (I know this is difficult to answer.



Oh yeah, the last question... how about exhaust/air filter? Does this really make that much difference with EGT's?... or is it a small difference, like 50-75 degrees?



Mike



Oh yeah, in preperation of getting the new injectors I replaced my lift pump a couple of weekends ago... my pressure was getting down to 0 under even slight acceleration... .

 

[klaybus]

DD II's

I'm totally stock with mine so I may not be the person to answer your question but Diesel Dynamics web page says... .



ETC with DD II's = 75 HP

ETH with DD II's = 90+ HP



Add this to your EZ which I believe states it adds 85 HP that should be the equivalent to approx. 160 HP gain from stock. My 99 QC 215 HP stock engine turned 200. 6 HP at Piers Dynomania this year so I would guess you would be at about 325-350 RWHP with DD II's & an EZ?

Many here run that setup so I'm sure I will be corrected if I'm wrong. I would also love to hear from someone with that setup. The boys at DTT last summer told me that an EZ & DD II's is an awesome setup for towing and thats what I'm looking to do to my truck. I believe you would not have to swap out your turbo as long as you keep an eye on the EGT's. The DD II's will definitely generate some heat though!



Clay

 

[Mad Bomber]

H.P.

When ever you add 2 things IE box and injectors they DON'T just add the 2 HP together. The ETC likes boxes better,the ETH likes injectors.

 

[klaybus]

My BAD!

Many here run that setup so I'm sure I will be corrected if I'm wrong



I should have known Eric would have some input.



Eric,

What do yoou think DD II's & an EZ will produce combined on an ETC? Uneducated wanna-B's would like to know... .



Thanks,

Clay

 

[Mad Bomber]

H.P.

I can't give a # because 1st I don't have a ETC,and 2nd how your injection pump was set up. There can be a 40HP differance in a stock injection pump. A guess might be 275 to 325.

 

[alaterreur]

I have that set up on my ETH. It was dynoed at 349hp and over 800 pounds of torque. and yes I have to slow down for the hills due to my EGT's. The trailer weighs in about 13500. I was climbing the hills about the same without the dd2's because I did not have to slow down. It was about 115 degrees outside going to Las Vegas. And yes you will need a clutch and exhaust to help the EGT's and slippage. I am trying to find the right turbo which I can use my Jacobs Exhaust brake.

 

[WadePatton]

DD can tell you what they've seen.



Yes you can limp along. Worst case--EGT or clutch wise--you "turn off" the EZ and run on the injectors with EZ in "boost module" mode. I don't know how you turn it off, but it has been discussed here before.

 

[Mad Bomber]

HP

Wade it's called a comp you just reach down and turn it off. LOL

 

[WadePatton]

Oh no, it's called a DDUFM, that's totally different .

 

[Idaho Native]

DDII's and EZ

Mingoglia,



I've run my '99 ETC 5spd first with an EZ (nice boot in the pants) and then added the DDII's (heavy boot in the pants). See sig for other goodies. It is great for towing... I couldn't get it to 1300 degrees unless the OAT was above 95 F.



As for the clutch, the stock one took the EZ alone just fine. Only took about 500 miles with the added DDII's to make it slip badly. Acted like an automatic in 5th gear one day when I pulled out to pass someone, unloaded.



It's no quarter-miler... that's not why I bought the thing... but in 3rd gear roll-ons, it's simply amazing.



E Wagener, that's the first I've heard of that much difference between stock pumps!! It answers a question I had about how much harder mine pulled stock compared to an identical truck that belonged to a friend... I'll have to tell him about it.



Loren

 

[klaybus]

ERIC W

I can't give a # because 1st I don't have a ETC,and 2nd how your injection pump was set up. There can be a 40HP differance in a stock injection pump. A guess might be 275 to 325.



Thats what I was kinda lookin for... 275-325. I had no idea that there could be such a difference in the setup of a stock injection pump.



Thanks,

Clay

 

[Mad Bomber]

HP

Clay, Dave Smith motors took some stock new trucks all the same year and same model and put them on a dyno and found that spread. When my truck was total stock I was able to put down a 244. 1 to the pavement. My truck should have been 245 at the flywheel. I did go to Cummins NW and asked how could this have so much of a range and they said that the injection pumps have a bell curve of power most are down the center but some are high and some are low.

 

[WadePatton]

The two most similar stock set-ups to run on our local dyno turned 210/454 and 220/440 on different days. Both are rated 235/460 Flywheel.



The 210 was my 00 and the 220 was a 99... of course I've added 205 since then.



FWIW.

 

[DHatfield]

DD2's and the EZ is a great towing combination. I tow my Jeep and trailer (6,000lbs) through the Rockies 2-3 times a year and I never had too much of an EGT problem until I was going way over the speed limit. My truck is an ETH and it dynoed 358HP and 740TQ with this combo. Just watch out for smoke when towing in the mountains with this combo especially when hot out as smoke get pretty bad.

 

[Mad Bomber]

HP

Originally posted by DHatfield

Just watch out for smoke when towing in the mountains with this combo especially when hot out as smoke get pretty bad.

The smoke NEVER get bad as it smokes it just gets BETTER

 

[Hohn]

i have had the EZ/DD2 combo for about 9 months/13K miles now.



My stock clutch holds, but yours won't. The 4500 has a much smaller clutch.



Heat shouldn't be that bad at all. You can drive around it with the manual transmission. I have only been able to spike mine up to 1400 degrees, but that's at OVER 6K' elevation in hot weather.



You can band-aid the clutch by dummying the EZ and making it act as a boost fooler only. All you need to do it disconnect the Data plug connector. The MAP part of the EZ still functions. Very smooth power this way, and the engine seems a lot happier than with the EZ pounding it with so much timing clatter.



HP should be between 320 and 340. Figure 35 hp for the EZ and 75 from the injectors. There's a lot of varation from one truck to another.



For example, I drive an ETH like mine that had a Comp and stg 3 injectrs. It was not any faster than my truck with DD2s and an EZ, at least by SOP. It sure did smoke more than mine, though! With both have stock turbos, so he was running out of air for sure.



If I were you, I would step up to EDM injectors-- a Mach 1. 5 or Mach 2. Then dummy the EZ until you can do the clutch. The EDMs will run a lot better-- cooler, stronger, more efficient. I like my DD2s, but really wish i had gone with EDMs.



Justin

 

[lkuykendall]

I am running 275's and an EZ on my 6 spd. My clutch will not hold all the power I have unless I baby it. I realize you have a 5 spd and they tend to hold a little more than the 6 spd, but with DDII's, I think you will be in the same shape that I am. My clutch slipped last week pulling a 33' enclosed trailer, loaded heavy in 40+ mph winds. I had the cruise control set and when I hit the bottom of one hill and started up the next, my boost went from 10 lbs to 32 lbs in a heartbeat, which was more than my clutch could handle. I hit cancel as soon as it happened and it didn't slip again but I hate having more power than I can use! Also, my EGT's will hit 1150 pretty easy when pulling heavy on a hill (I'm running BHAF and straight exhaust). EGT's would go higher but that is my personal limit.



Len

 

[DDT]

I was under the impression that 275's & a EZ would work for a stock clutch if you were gentle while loaded. Do I have the wrong info? I just got my 275's from UPS today. My EZ had to be sent back for repair, but will be back.

 

[lkuykendall]

DDT

Your 5 speed should hold the power better than my 6 speed. I have had no problems with the clutch until all my power hit so hard and fast with the cruise control set. Unless you are pulling and run into something similar to what I did or you abuse the power at low RPM's, I think you will be fine.



Len

 

[DDT]

lkuykendall

Thanks I understand better now. When loaded heavy drive like I am hauling cattle. I feel alot better now.