Thread: Nanocom Instruments Mode figures for D2 Td5

(for all the presented figures +/- 5% is acceptable)

MAF(air flow) = 55-60 at idle growing with revs up to 600 or above at 3000+rpm... to not exceed 680 then it cuts out

AAP(ambient pressure) = real ambient pressure on barometer in kPa, around 100 must drop up to 2-3 units to 3000+rpm, more decreasing of that value related to the acceleration should indicate that the air beyond the filter is less than required.

AAT(ambient temp) -only Eu3/15-16P engines = real ambient temp on thermometer

MAP(manifold absoolute prssure) = with AAP at idle growing to 230 at full load ... TURBO PRESSURE = 1.3 at max load

CYLINDER BALANCE = +/- 4 is good

IAT(inlet air temp) = AAT + 10 to 30 depending on outside temp, engine coolant temp and boost(meaured with the car's coolant gauge at middle)...also it can be much higher if non-cooled EGR is still fitted

COOLANT TEMP = 70 - 115 gauge stays at the midddle, the gauge will go to red zone only at 120 and the electric cooling(aircon) fan kicks in at 110 and stops at 105... normal operating condition around 90

FUEL TEMP = around 10 less than coolant temp

THROTTLE
ACCEL. WAY 1 - about 0.3 - 0.8V with the pedal released, about 4.7V with pedal to the maximum position
ACCEL. WAY 2 - about 4.7V with the pedal released, about 0.3V with pedal to the maximum position
ACCEL. WAY 3 ? this track must have values very near to the second track.(only 15P-16P engines)
ACCEL. SUPPLY ? this value must stay between 4.9 a 5.1

IDLE ESPEED = 750rpm

IDLE SPEED ERROR ? This is a calculated value that shows the difference between the idle speed and the real drive demand

I only get 0.9 turbo pressure, no matter how hard I push it, and my manual Td5 D2 has never been keen to go above 2500 and gets a bit harsh above that. Smooth and reasonably grunty motor below that (most of the common mods done - TRS ECU (early D2), boost box, EGR, large intercooler, silicon hoses, straight-through exhaust, wategate rod adjusted, new turbo boost modulator etc).

Also, I can't see a MAP reading...

With nanocom you'll see MAP in ''fueling inputs'' not in instruments mode, if you have boost box that can be the reason for low turbo reading depends what kind of boost box it is but the MAP reading is vitiated by it anyway... that limited boost and rpm looks like stuck wastegate at first sight though, see the AAP reading cos failure of this sensor limits boost as well, if no faults logged and sensor readings are within limits your problem is with the fuel supply somewhere


the best would be to record a live fueling inputs log from a longer drive, convert in excell and post it on the forum cos that would be relevant.

In addition to low turbo pressure reading, I can only get MAP reading up to about 200. Interesting that you mentioned fuel supply. When I first bought the car about 8 years ago, Graeme Coopers said that it wasn't getting enough fuel and that a TRS ECU replacement would solve the problem. It definitely improved performance but not as much as I was expecting, particularly given that just about everything else has been upgraded too. There's no fuel leaks and the fuel pump is quiet and the main fuel filter has been replaced...however, I'm now wondering if the pump mesh might be blocked or I have a problem with air bleed valve, as my symptoms of struggling to go over 3000rpm are very similar to this:

http://www.aulro.com/afvb/projects-t...-tutorial.html