Engine/Transmission (1998.5 - 2002) Ez & DdII ?

[Breck]

I recently sold my 95 CTD that put down around 300-330 rwhp and purchased a 2K CTD auto. As of lately I installed an EZ and I am now thinking of purchasing a set of DDII's.



My question(s): What type of rwhp will that be for a 215hp... 300-320'ish sound about right?



Second question: What type of EGT's will I be seeing (towing & empty). The reason I ask is my 95 I rarely had to worry about EGT and was hoping that I could set up the 2K the same way?



V/R



Breck



P. S. I miss the 12v!

:{ I hope that I can make the 24v make me

 

[Barry]

If your are going to take it that far, I would install a 4" exhaust turbo back. Then I don't think you would have any problem.

 

[RobbyRam]

I have an 'EZ' set on '2' and DD 2's. Mine Dynoed with the stock TC and a DTT valve body at 271 rhp, but the operator had trouble getting lock up so I think 300 is possible with that set up but BEWARE- I eventually fried my transmission and had the whole thing rebuilt by a DTT rebuilder. $$$$. $$



The difference now is like night and day. I'm going to a dyno event in Sacto in two weeks so I hope to see the higher numbers then.



As for towing, my pyro is post turbo and rarely gets above 800 degrees up a grade and around 600 degrees level ground. 500 degrees not towing.



I will say that the fuel mileage was the most pleasant surprise;

Went from avg 13 mpg's to over avg 18 mpg's at the pump with this set up.

Bob in Sacramento

 

[RADdodge]

Too Hot...

With the Edge EZ, expect a maximum of about 50HP gain. With the DD2, expect about 75 HP gain. Those will get you to the HP you’re aiming for, but you won’t be happy. The HY35 turbo on the Auto won’t supply enough air to keep the EGT’s down. You can develop the HP, but it won’t be very usable. Besides the Auto itself is going to take a hit with an increase of 100-125HP. So the EZ and DD2’s will get you in the HP range you are looking to attain, you need to consider how to keep the EGT’s in a workable range (Bigger turbo, increase air flow filter and larger exhaust), and how to keep your drive train happy putting that increased HP to the ground (DDT or ATS). (And don’t forget the gauges). Check out the DD site link and I included a graph from their site that shows the comparative HP gain of each of their injectors. Happy BOMBing.



Diesel Dynamics





#ad

 

[Breck]

Thank you for the replys; It was what I was thinking.



V/R



Breck



P. S Have to keep infront of Dad's GMC D/A combo. I honestly think with just the EZ I can out run him; at least seat of the pants towing says so?

 

[LSMITH]

Horse puckey. The EZ and DD2 combo does not need intake or exhuast mods to run reasonable EGT. If 1100 is high to you it might, but if 1300 is reasonable just plop 'em in.





300-315 is what you should expect, RWHP, out of the 2's and EZ.



The combo is more than an auto will take without constant attention on your part or a VB while towing.



In all honesty I would suggest you sell the EZ and buy a set of DD3's. Driveability is improved to me, and peak power is close if not a tad lower. EGT will be very close.

 

[SOLER]

I have the EZ and DDII's. With just the EZ, EGT's were something to keep an eye on. Then with the injectors, I could EASILY get up to and above 1300 degrees. And that was not towing, and EGT guage pre-turbo. Exhaust and bigger air filter are a must.



You will have more issues than me with your turbo and auto slush-box.



SOLER

 

[Snow man]

We have dd2's and an EZ in my dad's 01 auto,it has a BHAF,and a turnbuckled HY35,I cannot get it above 1150 preturbo without a trailer. With a 7K trailer its never got above 1300,but we havent needed full power on hills for more than a few seconds. Without the turnbuckle,and BHAF,i could hit 1300 at the top of 3rd gr empty. The BHAF and turnbuckle dropped it over 150 degrees. Lsmith,we had dd3s in his truck,the dd3s' alone will run quite a bit hotter towing,than the 2's and EZ. The ez actually lowered EGTS. The EZ adds quite a bit more low end,with just dd3's you wont get the huge torque increase in the low end/midrange. The auto will not hold the dd2's and EZ without work,we did the DTT VB,TC,and update kit on his truck,its a great performing/towing setup. If i ever dyno it,. ill post the #'s.

 

[LSMITH]

Soler, an ETH is a different aminal all together, sig info would help.



Snowman, the large torque increase in the lower RPM is precisely why I recommended the DD3's over the 2's and the EZ. It is WAY easier for an auto transmission to hold DD3's than it is the 2's and EZ, and towing power IF in the correct RPM band (1800-2600) is not a lot different. EGT in my experience is not hard to control with the DD3's while towing either, but can hit 1300. I do not think 1300 is death in an instant, 1300 for less than a couple hours is fine with me. I do NOT go over 1400 for more than a few seconds though. Stock intake and exhuast have NEVER had me over 1400, or even close, unless a wiretap box was in the equation even with DD3's.



If the budget is limited I would recommend DD3's, OR DD1's and a VA/EZ. If transmission and intake and exhuast are in the budget then go hog wild on it.

 

[Big White Beast]

EGT's were fine...........

EZ & DD2's and a heavy truck. Never a problem with the HY turbo. Switched to a PDR HX-35 and saw no appreciable gain. EGT's about the same and the only gain seemed to be up in the power band, seemed a little smoother. That was with a 4" exhaust though.



Either way the 2K's had the HX-35 anyway, I think. It was in 01 that they brought in the HY turbo.



On the 02 we got a PDR modified HY but are only installing the 275 injectors so it shouldn't be a worry anyway. I like the quick spool up of the HY and think this will be a sweet set up.



Garrett



As an after though aren't the 03's and up only carrying the HY turbo? And the HO's are supposed to be in the 300 HP range.

 

[Breck]

FWIW it is a HX 35, same as the 95. I just figured that would be alright for the power I am looking for but wanted to check with some of you that have this combo. Is there really that big of a difference between the 2's and 1's as far as egts go? How about the 275's?



I will say that this thing (the 2K) has no where near the low end grunt that the 12v had and it's transmission made it to 100K and then again to 212K (replaced the stock TQ at that time with a 7x from BD then sold the truck with 240K still running flawlessly)



Needless to say, I did the same thing to the VB on the 2k (it worked well on the 12v). One of these days I'll probably up grade the TQ to a DTT or try another 7x from BD or maybe even ATS new one; But that will be another post.



Any of you previously own a 12v and find that the 24 just aren’t the same beast? What have you done to get it to run like the 12v? I thought that the ez and DD2 would get it close to how the other truck was. I just want a truck that will pull as nice as the 95 and not have to "hawk" the egt guage.



Thank you once again for the replys..... as always nice prospectives from many of you. Probably going to keep the EZ and do injectors, which ones??? (trying to figure that one out), and build up a 4" exhaust then it will be done... ... yeah right! Honest.



V/R



Breck



P. S If anyone is trying to figure out how come I had good luck with my 95 auto transmission? I changed fluid every 15K and filter at 30K intervals. And yes... . it was used to pull (about 10K a year) sometimes grossing over 24K... . taking it easy doing so probably helped.