I posted this before and never got a chance to get back to your answers. 60 mph is max pulling in 3rd and in OD you hope for a good wind. I took the sending unit out of the tank it was clean .Also replaced fuel pump,fuel filter,new kn air filter,new vac pump. I have 5000 miles on new engine and turbo.Truck runs great and flies down road with no load .Camper has electic brakes checked ok.

soder a 10k ohm inline resistor in on the "B"wire off the MAP sensor.
this will give you more boost, more of the time.Edited by: quantum mechanic

does the truck smoke while your trying to pull with it?

does the truck smoke while your trying to pull with it? i cant see any black smoke

Well then, looks like if you really want to pull faster with this truck, you've got to do some upgrades...ie PCM/exhaust/intake etc.

Well then, looks like if you really want to pull faster with this truck, you've got to do some upgrades...ie PCM/exhaust/intake etc. I have new aftermarket 3" exhaust and bought turbo master but havent installed it .

Even if you install the turbomaster this will give you more boost potential.
http://www.dieselplace.com/forum/uploads/199_mapdiagram.jpg
The MAP sensor is on the upper intake manifold.
The middle wire coming off of it is green, the "B" wire. Cut it, soder in the resister and seal it for the ride.
http://www.dieselplace.com/forum/uploads/A67_MAPwire.JPG
The idea is that when you resist the volt signal the ECM interprets this as low boost.
this tricks the programming into allowing more boost before a trouble code.
over 25K ohms and you'll be resisting too much.

There are restrictions you can remove and modify in the intake.(airbox,snorkel,lower intake)
and the best one for me has been the removal of the CAT, muffler and refining the exhaust to a short straight run.

I'm ready for the DYNO.Edited by: quantum mechanic

I'm goin this weekened to pick up my trailer..

Just wondering.. how much boost can you run before it becomes a *bad idea*..

i've got a normal (12psi boost/spring activated) wastegate actuator i can use..

no EGT gauge yet..

-- WheatKing

Wheat 7 is max recommended for non intercooled or WMI engines as IAT really climbs and PCM will clip you also unless reflashed, above 12psi is counterproductive from backpressure in turbo, My IC I bump 15 on a really hard accel and TM hoggged down to 3/4" spring, normally I set mine to give 12peak & 5-7 cruise 1-7/8" spring.

Keymo


Lets have some more information. Do you have an EGT or Boost guage? If so what are they showing while towing at 60 and going down the road at 60. Are you setting any codes while towing, mainly related to the trottle position?


It makes no sence that your truck will run well with out the truck and only 60 with a small trailer.

Keymo,
Any intake/ehaust restriction you remove will help your pulling power but you will come to a point where
an intercooler is necessary real quick. The more fuel you burn the hotter she'll run.
TDG explains a way of advancing the optical sensor that has backed my running tempatures from 195 deg to 180-185 deg.
(I also lifted the back of my hood a little for airflow).
Intercoolers are all about air density. once you get the volume of air charge maxed out density/tempature is all that's left.

Also how much does this trailer wiegh?Edited by: quantum mechanic

Welp.. i can officially say i know your pain now..

My truck doesn't pull much better than my jeep did.. it seems way down on power

I know i need a new boost solenoid for sure.. lotsa smoke when i get on it but doesn't go anywhere..

the trailer is a 25', and 4300lbs.. so it shouldn't be hardly workin it.. my dad's Dodge with a 318 pulled it better.

couldn't hardly get it to hit 50mph goin up even moderate grades.. BLAH.. rolled ok on the flats however..

Trailer brakes weren't dragging either.. rims were cold when i stopped for some food..

Time for upgrades :)

-- WheatKing

quantum mechanic: is this the boost fooler that i have heard about? and where would you pick up one of those resistors?

This is it, a 10 K ohm "fixed" resistor wired into the signal fron the MAP sensor.
The are a few variations on this theme, but this is as basic as it gets.
Any eletrical parts store would carry these.
radio shack has them two for a dollar.

I can safly run the 10K ohm resistor without an intercooler.
With 20K ohms I have to ease into the pedal or it makes alot of heat.
Edited by: quantum mechanic

Something sounds fishy...I can easily pull at 60 in OD with my 1500 (no performance mods) and a 25' fifth wheel, even in a 'moderate' crosswind. In calm conditions and good highways I can easily make 75 in OD.





Perhaps you have the 4.10 rear end and that is slowing you down with the higher RPM's? Just a guess... Edited by: thewoz

yes i have 4.10 gears . pulled last weekend average 60 to 65 mph in od. truck didnt smoke ,but when going up hill it would down shift and the turbo was loud . is that normal? have been looking for gauges on web. thinking this might help answer some of the problems. i just like to thank everybody that replyed to my questions. this is a great web sitehttp://www.dieselplace.com/forum/smileys/Clap.gif

First thing to do before pulling anything with a Diesel is install an EGT guage and preferably a boost guage. There is no reason if all is right why you shouldn'r be able to run 75+ with that trailer and your gears.


Install the guages and then post some results. Then we can give you direction. Without the guages you run the risk of killig the engine before we can solve the problem.

howie , been looking for gauges and pillar for mounting the gauges .your right this should help or give a starting point to the problem?