Recent content by apcconstructions

I cant see any difference - DPF with core or delete pipe without core - the only sensors used are pressure differential sensors, temp sensor and O2 sensor. The ECU can not tell if there is a core in there or not!! I think they replaced the pipe when the car was in regen mode and it had not...

Yea just made a like a 21/4 inch hole straight through the middle - same as the exhaust pipe diameter so it is essentially a straight through exhaust now. to try and remove the complete biscuit will be a nightmare and will prob achieve nothing anyway??

Yea there have been a few guys with not much up top talking about fuel economy.The DPF models deffinately chewed the juice compared to the previous model and by at least 50% more fuel - driving habits have nothing to do with it. I have a farm 250km away and my 2007 model always got 10 - 10.5...

I unbolted the dpf and then used a 25mm dia masonry drill bit with a drill ( only cause I had a nice long one handy - about 450mm lng) I then drilled out the core from both sides and then just used a star picked to help widen out the hole( it is like a honeycomb structure and the material is...

when the regen happens the dashboard light should show up ( looks like a puff of smoke on the top r/h corner) that tells you when a regen is happening. make sure that all the sensors are still in place and it is critical that the O2 sensor ( biggest sensor on the rear just behind the DPF) is...

There is a lot of theries currently going on regarding the DPF. I myself was posting a lot regarding DPF and trying to work out theries on what is going on but I now feel that I am very confident n what is going on. 1. On navara's fittted with DPF nissan is using DENSO technology where there...

2010 stx auto with DPF ( DPF hollwed out with star picket) 15L per/100km before star picket 13L per 100km after star picket Just had ECU remapped to delete DPF functions and sensors and remapped fuel for economy and low down torque.

read this article - it explains why navs with dpf's use so much fuel. Post injection to keep NOx down and retarded injection (injection ATDC) to raise exhaust temps for DPF(but loose economy and torque). Even when DPF is hollowed out we all still use 30-40% more fuel than non DPF Navs. Only fix...

I am looking at doing the same thing - you can buy a spare ecu from wrecker, send the spare away to get re-mapped then plug it in - when you go for a service then just plug your original back in with no warranty issues ( I'm pretty sure the manufacturer has security in place to tell if the ecu...

The extra injection is not there to service the DPF it is there to act as a reductant for the cat and keep the o2 down in the exhaust for nox emission control. The dpf is only there to trap excess particles and its regen is initiated by the differential pressure sensors and the temp sensors...

not in my case - however if you plug the sensor back in and do the ECM reset procedure this clears all codes and CEL turns off and it operates as normal. If you plug the sensor back in without clearing the codes the CEL "may" go out after some time ( the ECM does constant checks and if the...

I have just done another tank with the o2 sensor unplugged and got 11.2L/100km again. Did another tank with the o2 sensor plugged back in and went up to 13.5L/100. O2 senor unplugged saves you about 2L/100km. does throw a cel but so far I have done 1000km and no limp mode. Cant see limp mode...

love those spell checkers !!

I think the main point is a diesel engine is a lean burn engine and you cant really control the richness of the combustion as there is no throttle body - If you inject more fuel to try and make the engine run rich the engine just goes faster so a O2 sensor in the exhaust manifold is useless. -...

Don't bother with the O2 sensor simulator form the US. These sensors are for petrol engines and the O2 sensor works in a totally different manor to the ones used in the Nissan diesel. Also the ECM does monitor the Sensor output and if it is not right then it will still throw an error code. In...