21-12-2015, 10:55 AM
(21-12-2015, 10:08 AM)JTaylor2005 Wrote: Well I was thinking if mine has hazy smoke now. With an intercooler fitted, boost controller, a better maf, and then a low stage 2 map like 140hp ish then theoretically it should be a very clean efficient burn then. Not much smoke and making use of all of the fuel
Going to a stage 2 with 2.2 sensor and it burning clean won't necessarily give better MPG - at anything under about 80% throttle you'll be within the MAF sensor's working range - if you're smoking at full pedal, you're consuming a crapload of fuel anyhu... This is why nobody worries too much most of the time when you're off the end of the MAF sensor's working range - since for the vast majority of the time where you need the feedback to control smoke output, you're within it's range - the rest of the time, as long as the engine isn't broken/air filter clogged, there's more than enough airflow through the engine to support the injection quantity specified at a decent AFR.
Upgrading to the 2.2 sensor should give you the capability to make it near as dammit smokeless the whole time - any smoke that does occur is usually from overly retarded end of injection.
WRT the sensors themselves - the late 110/2.2 sensor is a physically bigger housing - so easily distinguishable. Also is used on the 2.0 16v 110hp HDi (RHW, RHM, RHT) engine as used in the 807, C8 and some vans.
Siemens part number for the larger late 110/2.2 750kg/h sensor is: 5WK9628
Siemens part number for the 90hp 577kg/h sensor is: 5WK9623
