GO 4LO

My EZ should be arriving in the mail tomorrow. I don't have gauges or a pusher pump yet. Would I be okay putting it on at the first level (or maybe second) and running around for awhile? I don't know if I can resist the temptation to install it with 65 hp sitting right there .
What do you guys think - will I be okay on the lower levels for a week or two before gauges and fuel system?
Chris

crobtex

I'm totally stock and ran mine with just pyro and manifold pressure gages for a while with no problems. The EGT's went up some, but nothing critical.

Shovelhead

Pusher pump would be overkill with just an EZ.

A fuel pressure gauge should be 1st on your list of "gotta-gets" though.
If you tow, a Pyro (EGT) gauge should be right up there too.
(ask DieselDude4X4 )

rattle_rattle

As far as I know, the EZ has three settings that are only changing the amount of time the system waits for the turbo to spool up before going to max fueling. All three settings go to the maximum fueling, just some settings get there sooner. I'm assuming that the EZ is going on your '98.5. Anyway, I have the EZ and the standard lift pump. I do have the larger banjos and a fuel pressure gauge.

pmtg

I, too, have the ETH but noticed my EGT's were lower when I ran the EZ versus no EZ. I believe its the extra timing that allows the truck to run cooler. But I need my pyrometer checked (look at my sig).
If in fact you have the EZ, not the Comp, then you will only have "response" jumpers located on the back. Basically, more or less smoke at low boost levels. You will not have different power levels.
But you need to get a fuel pressure gauge just to see if the lift pump is working properly in the stock condition, otherwise you don't have a prayer with the EZ. Everyone else recommends pyro and boost, and I am no different...get them. Its your cheapest insurance.
Pat

erics76

I've had my EZ on for two years with no fuel delivery modifications. I ran it for 8 months without gauges. Like everyone else says, get some gauges when you can. The EZ is fairly mild, you should be fine with stock lift pump if it's still working good. Hence the need for gauges.

HOHN

You do not "need" a pyro with just the EZ. OF course, gauges are always a good idea, but you won't enter into dangerous EGT with just the EZ and the boost elbow, assuming no boost leaks, etc.

A stock ETH will show you 1300° at only 21psi. The EZ will allow boost to come up to 26psi. The EZ cannot increase total fueling over stock-- just WHEN it's available. Thus, you're basically running stock fueling, only with 5psi more boost. Thus, you'll have LOWER EGT than stock.

As was said, if your LP is healthy, you're fine. I'd be more concerned with a FP gauge than I would with a Pyro if I was only running an EZ. FP is needed even on stock trucks.

Justin

graphitecumnz

I can hit 31 psi with my setup...

rattle_rattle

Mine will go to 38PSI on a good day.

HOHN

OK OK-- 26 psi empty.... Boost under load (towing) with JUST the EZ will be quite a bit higher.

rattle_rattle

RustyJC

I'm still running my original lift pump with the mods listed in my signature. This lift pump has over 22K miles and delivers 16+ PSIG at idle, 13-14 PSIG at 70 MPH cruise towing the heavy 5th wheel shown below, and 11-12 PSIG at WOT when towing. Obviously, with my lift pump, no pusher is needed, even with the larger DD2 injectors.

Stock, and towing a lighter 5th wheel, my truck would hit 1300 degF pre-turbo EGT @ 21 PSIG boost.

With the EZ AND THE BOOST ELBOW, I could only hit 1100 degF pre-turbo EGT @ 30 PSIG boost - this is with stock injectors and towing the same lighter 5th wheel as when the truck was stock, but also with the BHAF and 4" exhaust.

The extra boost (and resultant airflow and trapped air during combustion) is primarily responsible for the lower EGTs.

Having said all the above, I still wouldn't want to drive a BOMBed truck without at least a boost, EGT and fuel pressure gauge - add transmission temperature if it's an automatic.

Rusty

GO 4LO

Thanks for all the help, everyone. I didn't realize that the EZ doesn't change the max fueling - do you have to get a wire-piercing box to do that?
I'm hoping to install the EZ and a BHAF at the same time, and my rig is already straightpiped. What would you guess for dyno numbers? 250/550 maybe? Thanks!
Chris

Shovelhead

My '99 w/ EZ and a K&N did a best of 231 hp & 468 tq at Huffman's 2 years ago.

It's enough to run a 16.9 1/4 mile with a Q-cab dually.

GO 4LO

Thanks, Shovelhead. So I'm guessing mine will be a little below those numbers then, since mine's an HO?

Also, am I correct in assuming that since the max fueling remains unchanged with the EZ, there will be no more strain on the lift pump than there is stock? Thanks again, everybody!

Chris