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

[Mad Bomber]

HP

Originally posted by 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.

Just ask Sixpack about a E-Z and 275's on the day not 10 min. after install he spun his DEE ETH. The trick is to keep RPM's up.

 

[Sixpack]

Dana,

just make sure you keep your rpm's up when your foot is in it and you shouldn't have any problems. As stated above, low rpm's and a heavy foot is murder on the clutch, especially if your clutch is borderline already. I know, I've been there!



Phil

 

[Sixpack]

Eric, you beat me to the punch!

 

[Mad Bomber]

HP

Phil, I guess my DSL helps are you still on dail up. And my hunt and peck typing is a little faster.

 

[Sixpack]

I'm on DSL, must be the spell check!

 

[Mad Bomber]

Hp

Spell check what's that?LOL

 

[DDT]

Eric,

Thanks for the tip. When pulling I usally keep the rpm above 2K anyway. Any guesses on HP the old girl will be putting out?

 

[Mad Bomber]

HP

DDT, Read 6packs sig

 

[WadePatton]

Want to test a clutch? PUNCH it at 1600--if it holds there, then you've got a dandy. Odds are it won't.



Marginal clutch. DON'T punch it anywhere under 2000. Voice of experience.

 

[DDT]

Read 6packs sig





WOW, If I would learn to read every thing I would be better off.

I might turn the EZ down a bit. His 340 sounds strong. know wonder you can smoke a stock clutch

 

[Bob Wagner]

dyno numbers vary greatly

 

[Sixpack]

Originally posted by Bob Wagner

dyno numbers vary greatly

I know Bob, but it's the only #'s I have now!

 

[RustyJC]

We just got back from our first outing towing our 13,500 lb 36' 5th wheel after installing the Con OFE - this trip was made with the EZ hooked up on position #2 and the DD2's. Plenty of power, and the maximum pre-turbo EGT I saw was 1225 degF. This was at around 1500-2000 ft above sea level with ambient temperatures of 60-70 degF.



The only hitch I noticed in towing with the DD2's and EZ is the excessive gain in the governor circuit that makes low speed maneuvering kinda tricky. At first, I thought I was seeing clutch chatter when letting out the clutch at idle in reverse, but it was actually the computer trying to overcompensate to hold speed and getting into the "romp-romp" mode that would cause bucking of the truck and 5ver. Giving the truck a little fuel with the accelerator helped this situation.



All in all, though, the extra horsepower with the DD2's is a pretty good offset for the somewhat tempermental low speed behavior.



Rusty

 

[MCherry]

RustyJC



If you were only going to make one change - Edge or DD 2's - which would you do and why?



My truck is still stock, but I'm trying to decide between DD 2's (or maybe the Bully Dog equivalent), versus Edge.



Martin

 

[WadePatton]

I'm no Rusty, but



Injectors first, clutch should hold them. Only problem is you'll need a boost fooler--which is then worthless when you get the box.

 

[RustyJC]

The DD2's with a boost fooler (I was using the EZ with the data link cable disconnected) and boost elbow deliver a powerband very much like the stock ETH, just stronger across the engine's rev range. This combo also produced controllable exhaust temperatures (I never saw over 1100 degF pre-turbo EGT towing in this configuration). The stock clutch never slipped while towing with the DD2's and "boost fooler", and smoke was not a problem.



The EZ with stock injectors never slipped the stock clutch, either and (again using the boost elbow) never exceeded 1100 degF pre-turbo EGT when towing. Compared to the DD2's alone, the EZ with stock injectors gave a strong torque "hit" from 1400 up to around 2400 RPM, but fell off quickly after 2700 RPM - I think this was related to the maximum flow capacity of the stock injectors.



To try to answer your question, the EZ probably gave the biggest change to the "SOP" dyno, but the DD2's should put the most power to the pavement. Based on my experience, however, if you do both, you'd better be prepared to buy a clutch. The hard "hit" of the EZ at lower RPMS combined with the higher torque of the DD2's could overpower my truck's stock clutch at 1900 RPM and below in 5th and 6th gears.



Rusty

 

[RowJ]

Klaybus

Didn't see an answer to your question (11/30) about HP on an ETC w/ EZ & DD2's. MY 02 dynoed at 300 hp (Dynojet 248c) with a DDT transmission. Definitly too much fuel for the available air. Have since gone with bigger Turbo - picked up 20 hp!

 

[Midnite]

Originally posted by RustyJC

The hard "hit" of the EZ at lower RPMS combined with the higher torque of the DD2's could overpower my truck's stock clutch at 1900 RPM and below in 5th and 6th gears.



Rusty

Rusty, would it slip your clutch while towing only, or would it do it empty as well?



Thanks,

Mike

 

[RustyJC]

Empty. Because of that, I never even tried towing with the EZ fully hooked up and the DD2's until I got the Con OFE clutch installed.



Rusty

 

[Hohn]

IT goes to show how much variance there are among 5600 clutches from the factory. Rusty's didn't hold the EZ and 2s, and he has 4. 10s. Mine is holding just fine (and has for over 13K of abuse) and I have the 3. 54s.



It's worth noting that I always start in 1st gear (even empty) and have only towed twice-- once 6K across country, the other time 10K for about 12 hrs.



I am NOT expecting much more life from the clutch, but it's showing no signs of slippage-- no chatter or shifting issues, etc.



Since I was expecting instant clutch damage, the strength of the OEM unit has been a pleasant surprise.



I am still planning on a Con FE soon-- I am going a little higher with the HP and a Con OFE might be outgrown



Justin