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stered555

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Any body fitted a CR power Box, deisel tuning unit to their D40, they calim good power for 5 mins fitting. 204bhp/474nm torq. very close to steinbauer unit but on a famous auction site for over 300 pounds less?
 
I have the CR box, hard to tell a difference, i think you get used to it and it is tempramental. Sometimes its great the truck will pull like a bitch on roids but otherdays its back to normal, there is a difference in fuel economy.

i.e. genuinely genuinely at 70mph on the motorway it does arround 38-41 miles to the gallon. didnt reset the trip computer and went to paris, south of france, spain, geneva with in 6 weeks and the average over the trip on the computer was arround 39 but i calculated 41.2 over 8000 miles, dad was a whitness and my girlfrend init just give em a holla.

the only really anoying thing is that the truck sometimes goes on to safe mode on any setting that makes a difference to the performance (obove 3 out of 12) when you keep on reving it over about 4000, but when it works it is great.
 
have a Spider in mine; runs like a bat outta hell. no complaints so far, cept the dealer tried to blame it for damaging the FPS. no proof it did tho
 
biggy how hard was the setup for spider. i had it b4 xmas but havnet put it in cos ive got to have it serviced and i cant imagine they would be **** happy seeing it in there..
did u have to alter the settings?
 
veteran said:
You can put a extra washer in the fuel rail pop off valve. This will stop the limp mode .
Explain more please..... :D
 
Quite Scary Productions said:
biggy how hard was the setup for spider. i had it b4 xmas but havnet put it in cos ive got to have it serviced and i cant imagine they would be **** happy seeing it in there..
did u have to alter the settings?
1) with ignition off and key removed, remove the 2 bolts on the plastic finisher. Pull forward on the finisher to remove it
2) locate the ECU connection to the fuel rail and disconnect
3) plug in the spider to the ECU connection on one side and the fuel rail on the other
4) turn ignition on for 10 secs.
5) start engine and let idle for a full 2 mins
5) van is ready for test drive

note that the engine needs to be warmed up before attempting to install the chip
 
veteran said:
As regardsto the washer, I have the info on paper and will read it tonite and post a more detailed explanation tomorrow.
That would be great vetern, thanks you!
 
mowerman said:
whats the plastic finisher?
the cover over the engine that has "NISSAN" written on it.....
 
biggy said:
mowerman said:
whats the plastic finisher?
the cover over the engine that has "NISSAN" written on it.....
Engine cover to us lot in the uk!! :lol:
 
Andy said:
veteran said:
You can put a extra washer in the fuel rail pop off valve. This will stop the limp mode .
Explain more please..... :D

Sorry I took so long to get back, but been out of town. The papers I have explain the mod procedures....
remove plastic cover and frame off engine to fully expose fuel rail,
put a magnetic tray under the aft end of the fuel rail,
take a 14 spanner and be very careful when removing the pressure control valve,
there are a number of items comprising a spring and small ball as well, note the order they come out in,
place a extra washer next to the existing one [1.5mm] thick,
replace all the parts as they came out,
prime the diesel in the rail.

That's what the instructions say. I don't have a cooking clue how to prime the diesel system .
I phoned the tech who gave me these printouts and apparently this mod is to stop the system going into limp mode.

Also of interest is the advice to place a 8k ohm resistor in the brown wire of the pressure control valve found at the front of the inter-cooler. This will up boost by 10% and get the egt's down. You will see the valve if you look through the grill on the front rhs . It has a plug with 3 wires. The middle is the brown one.

I am no tech, but the above comes from a good source. A fellow who does a lot tuning on navs. He probably has a few more secrets which he wont give out.
 
mowerman said:
Is stopping limp mode such a good idea? :? :shock:
mmmmm..... I would think it would still go into limp mode but at a higher pressure, obviously a higher pressure than the manufactures intended.
 
Paullen said:
Can anyone explain how the 8k resistor works? Normally upping boost increases EGTs (a lot).
Actually upping boost decreases egt, as you are adding more air. To be quite correct, you should add boost when you add fuel.
There is of course a safe limit to boost, before the explosion in the cylinder is so powerful as to cause catastrophic failure.
The Nav runs at 13 psi which is low boost so to speak. A 8k ohm resistor will up it to just over 14psi, thereby bringing the egt down and adding some power.

There is a boost sensor on the exit of the intercooler. This sends a voltage to the engine management which is read in boost. By adding a resistor, the voltage shown is less so the eng man system will allow the turbo to add more boost.. 10% or so.
 
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