AFR dropped at WOT
#17
EvoM Community Team Leader
That does sound weird. If you are sure you dont have a boost leak, then i would start to suspect the Wideband sensor.
#22
EvoM Community Team Leader
iTrader: (60)
it's good to test up to what you run the car to. revving the engine won't do it. you need a pressure tester then test up to about 25psi or so. it will flush out any leaks you have. you would be surprised where you will find them. the engine can't be running either.
it's best to mount WB sensors anywhere above 9 or 3 o'clock. level or below risks the chance of condensation building up after shutdown and affecting the sensor. if you are at leat 3 o'clock, you may be okay.
you will need to do a proper pressure leak test, though. what you did wasn't a pressure test at all.
it's best to mount WB sensors anywhere above 9 or 3 o'clock. level or below risks the chance of condensation building up after shutdown and affecting the sensor. if you are at leat 3 o'clock, you may be okay.
you will need to do a proper pressure leak test, though. what you did wasn't a pressure test at all.
Last edited by kaj; Jun 11, 2014 at 03:18 PM.
#23
EvoM Community Team Leader
You cant do a boost leak test that way. You need to use a compressor and block off the turbo inlet. You need to give it as much pressure as it sees at full boost to test for leaks. If you dont have access to a compressor then you will probably need to take it in to a shop.
#30
Evolved Member