Hi Guys.. truck is a 1999 nv4500 4x4 3/4 ton.  Virgin i just bought off original owner with 169k miles.  Stock injectors.  Only mods are gauges and a FASS pump.

 

Added Quad ADR today with iquad for android.  I HAVE NOT TAPPED THE PUMP YET and had planned to run on lvl 3 for now...

 

Got correct truck profile selected and quad app is reading all engine parameters.. went for test drive..... Valet mode (lvl 1) works.. half power limp mode lol.  

 

Turned it up to lvl 3 which should be timing and max Can bus fueling and truck is weak.  I am actually having a hard time telling if it is more powerful than level 0 (stock) ??  Definitely does not feel like a 65hp increase.

 

No smoke, and weak power delivery.  Can hardly get EGTs to 850* on a WOT run.

 

Is this normal?  I figured i'd at least get some smoke with max can bus fuel... no?  Or is wire tap going to be required?

 

 

Supporting mods;

Glow Shift Boost/fuel psi/pyro gauges

FASS pump

New stock clutch

Edited September 29, 20195 yr by gimmie11s

its ok man i just got mixed up and was trying to help out

On 9/30/2019 at 7:17 PM, comanche79p said:

Sorry about the hijack

Not trying to beat you up, just clarifying the issue. I personally would never hijack a thread. 

Edited October 13, 20195 yr by JAG1

Ha!  Good stuff guys.

 

yes, 285's on mine.  I could go bigger to "turn down" the 4.10s some, but 33" is large enough for me and since this will primarily be used as a tower, it's fine as is for now.

 

Lots of good info on this forum... seems like a good group.

@comanche79p - changed from 3.55 to 3.54 final ratio. You found out the secret. This is the narrow sized stock lighter by about 20 pounds typically.

 

@gimmie11s - changed from 4.10 to 3.95 final ratio. Could go bigger in tire. 315/75 R16 would get you to the 3.75 final ratio.

Hmmm.  Interesting.  That would be a great ratio for me.  Just dont think i want to step up to a 35.

Hence why I liked the 3.55 gears and just dropping to 245's which got me the 3.69 ratio final. 20mm narrower than stock but 1 inch shorter.

 

I like that sexy white truck. 

 

And yes with 4.10s a 35" plus tire will work well. Should see 20mp or damn close

I have. 2001 5 speed cummins. Has INtake and exhaust and just installed the iQuad a few days ago. I believe I need the fass165 titanium pump. Is that the only thing or do I need some sort of in tank pump as well ?  Thx in advanced 

FASS or an AirDog. In tank pump will need to removed and converted to a draw straw. You could do a mechanical belt driven pump too. Same thing in tank pump has to be converted too.

@Mopar1973Manokay cool so the fass 165 will come with the draw kit too right?

Should come as a complete kit. Follow the directions on the straw and cutting. Do not customize or change the cut for performance. The tip should be as close to the tank bottom as possible. FASS suggest stacking two quarters on the bottom and that is your gap. I'm running on a SINGLE quarter gap for the all this time.

Make sure to cut your straw on an empty as possible tank. Be a good idea to cut it 1/8 of an inch from bottom then make 1/8 by 1/4 wide gaps at bottom of straw so it never gets blocked by bottom of a tank. 

I personally like my draw straw5 kit it works on updated fuel modules.

No. It will fail.

 

The measurement has to be done on a empty tank. This will be the shortest distance to the tip. Diesel weighs 6.1 pounds per gallon which is 213 pounds of fuel. This will deflect the tank bottom downward giving more gap. As the fuel is consumed the tank bottom tightens to the tip allowing to draw all the fuel from the the tank. 

 

Large notches or making too much gap gives 1/4 tank issues... Tip needs to be tight to the bottom which getting empty to get all the fuel. 

 

One quarter coin gap, 1/16 notches... Less than 1 gallon left in the tank. Notice the notch still under the fuel.

Edited October 23, 20195 yr by Mopar1973Man

Thank you so much guys @Mopar1973Man @Dieselfuture for the tips. So use one coin gap from the bottom of the empty tank when setting it up correct?

Yeap what he said ^^^^^ that's what I meant, may not came out that way though. 

@Otto8335 Do you have an in tank pump?  If you have the on engine pump then there is no need to go into the tank and install a draw straw.  I installed a Fass 165 on my truck and I just used the stock pick up from the tank.  Good pressures and no issues.  I did run 1/2 line from the tank to the Fass and from the Fass to the VP (bypassed stock filter canister and eliminated all the restrictive banjo bolts). 

Personally I don't like the straw in the basket. There is the the thought of 1/2 or lower your keeping all the hot return fuel in the basket and very little cooling. Where the AirDog returns to the filler neck, the engine returns to the basket and the draw straw is no where near either. Hottest fuel temp I see typically is 135 to 140*F barely. Typically my IAT and Fuel Temp match. Being I've got 243k miles on the last VP44 not a bad setup. 

 

Fuel pressure: 14 to 20 PSI

Dual fuel filters: 3 um on the AirDog, 7um in the stock can. 

Fuel temp: <140*F

 

Wire tapped, 7 x 0.010 @ 320 bar Injectors.

 

My pickup is in the basket. It was the kit that came with my AD to replace the in tank pump, the pump and engine return both dump in the basket. I do wonder about fuel temp but I have no way to monitor mine. I cant say this is better or worse than any other set up but it has served me well. I put it in about 240k miles back and have 268k miles on this VP. Mine is filtered like @Mopar1973Man is with the AD and oe filters. I do run a good bit of bio blend thru mine, I do believe this helps the VP.

The Fass also returns to the filler neck...

 

I actually toyed around with the idea of putting in a drawstraw or sump but I havent had any issues with the set up as is so I havent put in either.  I bypassed the OEM filter because thats what the instructions from Fass said to do and I figured there were already filters on the Fass Pump so no need to keep the OEM one (and add more restricitve 90 degree connectors). 

@Mopar1973Man my buddy is selling me a brand new fass 165g but it’s the kit that just has the quick connect to the stock pump in the tank. And return goes to filler neck. So no draw straw. Will this work or should I buy the kit that comes with a draw straw. He’s selling it to me for 500$ brand new