2nd Gen Non-Engine/Transmission New to this forum. Need some advice on a good tow performance upgrade!

[NIsaacs]

So I'm just thinking about how much more I really needed before the EZ mod to now and I think the 30hp setting 2 will put me in the sweet spot for towing.

If you are happy with the added power then I would just drive it as is. You can always add the RV's at a later date, like when the power is not enough after you get used to it. I would not switch to level 2, you will be back to the tq dog. I don't know how the new units switch but the old ones you had to remove a small plate on the box and change a really small jumper, I run mine on 3 the whole time.

Nick

 

[klcammie]

So if blowing black smoke sounds like you need more air. What filter are you using? May need bigger filter like a BHAF. Or like some say bigger trubo.

 

[woodtrucker]

That's funny Snoking! And yes I have discovered I'm behind the curve for sure! I will keep it here for now and all I have is a toggle switch Nick. 20,30,65. Thanks for staying with on this thread. I'll catch up someday. Maybe...lol

 

[SnoKing]

The stock air box will do fine with the fender rubber boot removed and a few extra holes on the fender side and outter bottom side. I ran a BHAF for a few years and went back to the stock one, and could not tell the difference. Got tired of the turbo noise towing the trailer.

I ran:

4" SS exhaust
Jammer One injectors
Edge Comp WITHOUT the pump tapped(EZ mode)
PDR35-12W Turbo(a HX35-12W modified to spool quick like the OEM HY35 that the auto trucks had in 2001)

I could make it smoke with the boost set at level 5, and run it at level 3 99.99% of the time. It drove great and was a lively performer! Towed the trailer great and could average 12-12.5 with a 12,400 tall 5th wheel. It had 4:10 which are best for towing with a 24V auto. transmission was upgraded to handle the 325/650-700 output.

SNOKING

 

[woodtrucker]

I'm using stock airbox w paper filter. I think I'm gonna hold tight where I'm at until camping season and do some pulling with it where it's at. I don't think bhaf will make that much difference but I could be wrong. I might pick one of those up soon anyway. A guy may be coming to buy my bullydog module today.

 

[NIsaacs]

So if blowing black smoke sounds like you need more air. What filter are you using? May need bigger filter like a BHAF. Or like some say bigger trubo.

I am sure the OP was only talking about no/low boost conditions. At 10/15 psi and above it will run clean.

Nick

 

[RustyJC]

With the EZ "fooling" the ECM as to actual boost levels, fuel can get ahead of the boost and produce black smoke. That's one reason the stock HO feels weak below 2100 RPM - the stock ECM programming won't let fueling build fast enough to produce significant smoke. If you want it to run clean coming off idle or low boost conditions, you learn to roll into the accelerator pedal fairly slowly, especially when you go to larger injectors. If I stomped my 2002 with the EZ and DD2 injectors from a low load condition, it would lay quite a black cloud!! As Nick says, however, once boost builds, it ran clean.

Rusty

 

[woodtrucker]

Once my boost builds it cleans up too. So what your are sayign is it's more of timing thing than an overfueling thing in general? b/c I would think if I'm already cleaning up once boost builds now, that I'm already in the sweet spot until I can get more air through the system via larger turbo. Not interested in bigger turbos and making crazy horsepower. I am asking these questions because I really want to learn more about how these diesel engines work. I missed my calling. If I had it do over again, I would have gone to diesel school....

 

[SnoKing]

Larger is not always better. How quickly the turbo spools is what keeps smoke down at lower RPMs. More air/larger turbo is needed to keep EGT down when towing hard with high HP engines. The PDR35-12W I ran spooled similar to the small Hy35 on the 2001 auto's that was used to keep down this issue. So if you are in a gear that allows the engine to gain RPMs quickly then your stock HX-35 should spool quickly also. If you get on it in a higher gear and low RPM, then you are going to roll some coal!

Picking a turbo is not an easy task. It has to be matched to the conditions that you want to use the truck at "most" of the time. If you bought the RV injectors I would install them and turn the EZ down. You have to fix the injector tube leaks anyway!

SNOKING

 

[RustyJC]

So what your are saying is it's more of timing thing than an overfueling thing in general?

It's both. Stock timing is retarded because (1.) retarded timing lowers NOx emissions but (2.) retarded timing raises EGTs and supplies more energy to the turbocharger turbine, allowing it to spool up and build boost more rapidly. The Edge EZ advances timing for improved performance (and also fuel mileage, if you can keep your foot out of it) and increases fueling for more power. The net result, as Nick and I are saying, is that, with the EZ, the engine can overfuel in some low load (low boost) situations, and due to the advanced timing, not as much energy is available to spool up the turbo. Once everything stabilizes at higher load conditions, the exhaust will clean up unless you're grossly overfueled with "shower head" type injectors, in which case you don't have enough air (i.e., a large enough turbo) to burn the additional fuel. That's where larger single turbos or compound turbos come into play.

Rusty

 

[woodtrucker]

Ok. thanks a bunch Rusty. So that would mean, I would install injectors and likely not be grossly overfueled since the pattern is similar to the stock injectors but not shower head type?
I'm just concerned for two reasons on putting the injectors in. Overfueling and tearing up my clutch...
Great info. Thanks for sharing and I'm sure I'm like 10 years behind you guys but this is exciting none the less!

 

[RustyJC]

You shouldn't be overfueled with the RV275s, although you'll be able to roll some coal with the EZ if you hammer on the accelerator pedal at low load/boost - just roll into it slowly enough to let the boost catch up with the fuel, and it'll run pretty clean with the RV275s. At full load/boost, you won't have any smoke problems.

The clutch? Well, as I said earlier, maybe it'll hold, or maybe it won't. My stock clutch didn't with the EZ and DD2's, and it only had 14K miles since the truck was new.

Rusty