Syv's N16 2.2 dCi daily-project

Yeah spot on that. Not sure why one side is more heavy though, however on the passenger side gearbox and fuel tank probably isn't enough weight to counterbalance the heavy block like it would normally for a petrol aluminium block.

We can't expect perfect balance on a family hatchback anyway ;)
.
 
probably, my driver side is in the opposite side so situation is a bit better because of the drivers weight. UK models add up even more weight on the right. Still decent stats knowing the purpose :)
 
Long waited job done, brakes derusted, calipers newly painted. Ordered yellow tint for fogs, apparently I cannot use paint because of the MOT regulations. Hope the tints will do fine.
81536543.jpg
 
Cheers, yeah splitter would definitely improve bumpers bottom, but it's a bit too low right now. Raising it 1cm or maybe 17 inch wheels could make a space fort he front lip.

So, moving to the next things. Dyno time. Everything stock, haven't cleaned egr/injectors. Bhp looks alright, but some serious torque is missing. Also find out that I'm having some sort of problem and this is where I need some advices. Dyno chart was measured in 4th gear, while going on 5th gear we experienced power cut out after 4k rpm, no management light came up or anything, obd doesn't record any errors. It is going strong till that range and than its like you lift your leg after 4k rpm. I reckon same will happen on 6th gear, on the way home I tried different variations and yeah, sometimes it cut out power at the 4th gear also, probably at the 3rd too. Dyno guys though about ecu calculations, the faster car revs the less info is processed, going on 5th takes a while and then the magic happens. Only a theory though. Any directions where should I start looking? I have replaced a suction valve some time ago (was having rough idle), maybe this is related.

k8qd.jpg
 
Mine does the same overtakibg in 4th to 5th gear hit's 2000rpm then that's it ! Take foot of the soot pedal an down again it picks up no error's stored new scv valve regulary serviced etc im not sure wither what it could be :/
 
I've reported this before. Its caused by over boost and the ECU fuel cut coming in. There are ways around it that the Navara guys do to the fuel rail. See Nissan-Navara.net.

I use my fuel cut defender (FCD) but thats part of the 'mapping'.

-phone-
 
If you'd had a boost gauge and they had tapped into it you would see a spike in the boost pressure before the power loss I bet you.

And yes it seems to only happen in the higher gears.

-phone-
 
Well that's a start. Cheers for the info Ed. I'm running stock so this shouldn't be happening? Which sensor tells the ecu if the turbo is going too strong? Map sensor? while doing obd we peaked 1.5 bar driving on the city, and this wasn't even close to 4k. Makes sense, changing stock map sensor would probably fix this, but not for long (remap will bring it back eventually).

I'm not sure local dyno guys are qualified enough to map in FCD, any other options? How about AEM 3.5 bar map sensor which comes with the gouge kit? Or those FCD are pretty simple to adjust (plug and play, etc)?
 
Yeah MAP sensor. It can still happen stock, especially on a dyno when the load sensor is all out of wack, and the speed sensors are having a time because only front wheels spinning.

Dyno and confusions aside though, it's happened to me with both grey and black cars stock, going up a hill holding 4th gear to the 'red line'.

I'm not sure how viable different MAP sensors are for our car. I've toyed with it, and because even RS Tuning isn't sure how it might be mapped into the ECU (the Denso is far from forgiving when it comes to fine tuning) I'd be inclined to stick with the FCD for tuning and getting more boost with the fuel cut coming in.

The AEM gauge is a good one though and the sensor is accurate. It would be good at least for the decent boost gauge, and if we do crack using another MAP sensor then you'll have it there waiting.
 
Well then, FCD looks like one of the best options, haven't checked the navara forum, but this will make things a lot harder from now. It will be extremely difficult to find the right people to do the FCD mapping in the country I'm living . And we're probably talking about digital one (FCD2), not pneumatic.

edit: just looked at the wiring guide, not so difficult actually. This could actually work out in my case.
 
Thats right FCD2, and any tuner can use it. Its just a case of calibrating it on a dyno.

-phone-
 
Whoa that exhaust flange is huge! Careful I think you will have clearance issues with the coolant thermostat if you use that thick a flange. Otherwise, looks great. I know that Magnaflow will sound good too ;) Great to see progress on another derv :)
 
You must log in or register to reply here.
Back
Top Bottom