GTI-R US
Management
Posts : 8349
Join date : 2012-03-04
Age : 108
Location : DONT KNOW ANY CLUES???
if your not running a cat Andy then none of the above will apply to you.
The narrowband lambda sensor works open and closed loop
so in a nutshell monitors the fuelling at idle & fast idle (upto around 1800rpm)
After this the ecu uses signals/info from maf and the other relevant sensors such as tps, ecu temp sensor,iac, and so forth to monitor and adjust fuelling (stock ecu).
When tuning a vehicle with an aftermarket ecu or piggyback most tuners dis-connect the narrowband lambda and tune the fuelling & ignition maps without it as it can interfere with the map they are trying to input to ecu, the tuner will take readings from maf and other sensors from idle all the way through the rpm and load ranges to wot.
Fuelling is monitored by means of a wideband sensor (so no need for narrowband)
knock levels are monitored by means of det cans or other means of knock control device.
So in short just blank off the narrowband as your tuner wont use readings from it to map the car.
If in doubt give him a call and im sure he will confirm that
_________________
GTI-R-US.co.uk
In association with
Torque Of The South Motorsport
Nissan Performance & Tuning Centre
Services provided
Forge Engine rebuilds to specification
Body Restoration, Fabrication, Repair
Paint refinishing facilities
Ecu re-mapping-Performance upgrades
Auto Diagnostics, Injector cleaning
Race & Suspension setup
General Servicing, Mots, tyre fitting
Full workshop facilities