Good info, Jeremy. The rough idle that Jody mentioned is probably from what I posted earlier, from the higher pressure causing fuel to leak into the cylinders prematurely. Your setup where pressure doesn't increase till it's useable will be nifty, for sure (fashodo?! ).

When do you think you'll give this a go?

PS - Guess what, brown box arrived via UPS from Jody today! stock, 40, 80, 120, and a specialty prog. for some fun. Talked to Patti and she said the valve body shipped today, so probably won't get here till next week. I'm going to a wedding this weekend and would like to have the chip in to show off the 5th program a little, and frankly I can't stand having this chip sitting here staring me in the face goading me, so I think I'll install the chip this evening and go very easy on the throttle until I get the valve body in. Just a little FYI, cause I'm happy and excited and the world must know.

 

If it stops raining, I'll probably do it tonight. I think I've got an extra piece of hose that's the right size. It shouldn't take me but about 5 minutes to do it.

Care to enlighten us on what this special 5th setting is?

 

Got it done. Simple for me to do. I ran a small piece of hose from the intake manifold to the boost reference port. The spot on the intake manifold was where my wastegate lines used to hook up to, I just had it capped off.

Since it's been raining, I couldn't really get on it, but I did get boost up a bit over 15 psi. I started with 65 psi of fuel pressure at idle, and it ran right up to the high side of 80 psi when I was on it. It was tough to tell if it ran stronger as I kept it in the stock setting, but from what I remember the stock setting to feel like, it did seem to pull a bit harder once the boost and fuel pressure came up.

I was suprised by how responsive the change in fuel pressure is too. It seemed to be not far behind boost at all. If it dries out over the next few days (that's questionable), I'll give it another go. I kind of expect the stock fuel pump to level off at some point though. That shouldn't happen with any kind of good aftermarket pump.

Here's a picture of what I did:

 

Jeremy, I still have not gotten around to work on my regulated return but was thinking about trying this. The fuel pressure should follow the boost pressure exactly. With every 1 lb of boost pressure added to the spring pressure in the regulator, the outlet fuel pressure will increase 1 lb. ; 30 lbs boost will increase your fuel pressure by 30 lbs or until you hit the max pressure the fuel pump can deliver .

Keep us posted how it works when things dry out!

 

Pretty darn cool, Jeremy. It would be cool to dyno the truck without this setup, then hook up the hose and see if you get a significant change.

Oh, got the chip in! Love it so far. The 5th setting isn't as super secret as I made it sound, I was just excited and felt like being... clandestine... it's a Smoke program. It's basically the 120 with more fuel and less air via opening the wastegate. At idle I can rev it and it puts it out pretty good... and just cruising through my neighborhood, if I just goose it the slightest, POOF! LOL.... For me this is pretty darn cool because previously the truck just had an SCMT 1700, some old discontinued POS, and the only time I saw smoke was a small puff of grey once when I floored it after misjudging a small pickup I should've yielded too. To have a cloud of black at my command is pretty fun stuff.

I went easy on my test drive as I don't have the valve body yet... supposed to get here early next week. I really like how I can be on the freeway, and tap the breaks, and the RPMs don't take a dive down to practically idle, unless I'm down near 40 mph or so. Very nice and I'm happy w/ the shift timing so far. Going to a cousin's wedding this weekend, and golfing the day of, before the wedding, with all the family. Plan to pull up next to my brother in his little car and give him some black stuff LMAO.

(yikes, hijack over! )

 

That's a great idea, let us know how it does when it quits raining.

 

Hey Jeremy. My regulator is identical to yours (at least it looks like it) and was part of the kit I got from ITP. The instructions in my kit identified that port on the regulator as a safety release valve. It stated that in the unlikely event of the regulator failing, it would discharge diesel out that port. The kit even came with tubing to run it down to the frame rail and away from the engine/heat etc. Maybe I need to call Dennis and ask him about it. If it is a boost port then I want to play too...

 

I would most definately be checking with Dennis. I know ITP used to "modify" their regulators before they developed their pressure bleed system, but I think you had one of the early versions of the pressure bleed system - the part that broke on you - so your regulator should be unmodified. ITP does indeed call that port a safety release port, but if you read through Aeromotive's stuff, it is strictly called a boost reference port. Also, Aeromotive only makes one regulator that looks like that, their others are different shapes, colors, sizes, etc... You have the same one I do. You can play too.

 

roll alot of duct tape over your air filter. you will never see so much smoke. ryaneverk2 you do not have PMR's right? i am assuming they are adding more fuel by increasing pulse width, mainly advancing injection timing. that KILLS pmr's, if you have them be careful.

 

Thanks for the tip, Kris. I was actually thinking of sticking a trash bag over the air filter, and taping it tight against it, and just driving around the neighborhood... I was giggling like mad last night just revving her up and seeing the smoke flow out, as it was a first for me.

Nope, got Forged I'm pretty sure. Haven't visually verified or anything, but build date via the valve cover is Jan 05 2000 so I think I'm safe to assume they're forged.

I'm not 100% sure on exactly how Jody's doing the Smoke Program. I didn't think that increasing injector pulsewidth would hurt things, though. I thought that that just ensured that the injectors got emptied of ALL the fuel they had in them. Either way, I think it'll be okay with the forged rods, and also that the smoke setting is actually less powerful than the 120, since it dumps a lot of air via the wastegate. I haven't made any hard runs or anything yet since I don't have the valve body in yet (due this Mon or Tues) but once I do, maybe I'll do a couple runs from 40-80 with the 120 and then with the smoke program, just to compare them.

 

Man good stuff Jeremey - I take off for a long weekend (without a computer) and you guys are doing all kinds of fun stuff!! I gotta stop being away from FTE for a week at a time!! Now I really want a Reg. Return system... I need a 3rd job!!!

 

C'mon Ryan, don't be a girlie man. (That's a Cal Governator thing) Get out there and get on that sucker and post the smilies that go with it. A couple of hard runs shouldn't toast that tranny, and if it does, needs to go anyway.

Sorry Jeremy, I know it's your thread. BTW, what's the latest news? I see you've plumbed it where it will do all it can. Still raining?

 

No more rain. Dried out enough, and I just came back from a test drive. Got on it hard, boost shot up to about 27 psi and fuel pressure promptly shot up to 90 psi. That's right about where it should be!! I started with 65 psi at no boost, so the 90 psi at full boost is on the money!! SOTP feel is hard to tell, as the truck just tends to pull hard anyway. But, at least I know the injectors aren't starving for fuel.

On a worse note, when I shut the truck off, I heard some turbo blades hitting a housing right as is spooled down. I had to start it again just to make sure I wasn't hearing things, turbo sounded fine while it was running, but when I shut it off again, and I listened hard for the noise, it made the exact same sound again - the definite 'ting' of turbo blades. Looks like I'll be changing a turbo this weekend. At least I've still got the other turbo. Hope it's not raining, since I've got to leave for BTS on Monday.

 

Shi-ite man . Good thing you've amassed some parts there. What gives with that? Don't see anything you've done causing that. What do you think?

 

Only two things I can think of. The van turbo I bought is worn out and it just took some time on it to loosen the bearings back up. Or, I didn't get the compressor wheel all the way tight when I swapped them. Either way, the truck turbo is going back on with it's 1.15 housing. If it is just the compressor wheel that's loose, I'd prefer to take the turbo off to tighten it. And if the turbo's already off, I may as well put the one that I know is good back on. Better safe than sorry. Who knows though. I may pull the intake, see a loose wheel, and just decide to drop the downpipe and tighten it. Knowing me though, that's not what will happen.

Man, this thread is all over the place. Fuel pressure, chips, turbos....oh well.