Project black hole sun.
- Thread starter Dorsetsteve
- Start date
Dorsetsteve
Well-known user
Thanks for that. I had the appropriate hose clamp so dealt with that straight away. PCV makes sense.
teamzr1
Supporting vendor
The MAF reports to the PCM the amount of air mass flowing through it, the higher the engine RPMs is the more air mass will be flowing
The PCM looks at that amount and commands what amount of flow needed by the fuel injectors for the correct AFR
Any air leak after the MAF than is unmetered so more air is leaking in and PCM is still going by what the MAF reported
The end result of unmetered airflow is the AFR would be really way too lean and only the O2 sensors would report lean and confuse the PCM
This causes incorrect fueling and lean AFR which causes engine to run poorly so if a slight air leak is a negative to how engine functions
The stock air bridge coupler is not smooth as the engine had slight movement on the motor mounts and that flex type of coupler is designed to handle that movement
A smooth type will work but not as well as stock one and any vendor claiming performance gains for a coupler is FOC
You want zero air leaks from filter to throttle body
The PCM looks at that amount and commands what amount of flow needed by the fuel injectors for the correct AFR
Any air leak after the MAF than is unmetered so more air is leaking in and PCM is still going by what the MAF reported
The end result of unmetered airflow is the AFR would be really way too lean and only the O2 sensors would report lean and confuse the PCM
This causes incorrect fueling and lean AFR which causes engine to run poorly so if a slight air leak is a negative to how engine functions
The stock air bridge coupler is not smooth as the engine had slight movement on the motor mounts and that flex type of coupler is designed to handle that movement
A smooth type will work but not as well as stock one and any vendor claiming performance gains for a coupler is FOC
You want zero air leaks from filter to throttle body
Dorsetsteve
Well-known user
Very much understood coming from a twin turbo car with over 30ft of induction piping and the MAF at the start! All sorted now and hence why I think it’s wise to sort that pipe before it becomes a problem. Same with the other car, has two of those type joints and the consensus that removing them has no benefit.
teamzr1
Supporting vendor
Due to air leaking, is how long in time/miles it was as the leak would cause real lean AFR and cause PCM to command far more fuel injector flow which would cause more carbon buildup, and you should use a decarb product in oil and gas to help clean out and check spark plugs for carbon buildup, this also would help clean the fuel injector nozzles from carbon
Also with that PCV connector not correct would cause PCV system not venting oil fumes correctly
Also with that PCV connector not correct would cause PCV system not venting oil fumes correctly