Dual Air Intake

[xcelr8]

Here's a close-up of the MAS.

[SGT.BATGUANO]

the intake can't make it lean unless the system has a leak. you could theoretically run with no intake and that wouldn't make it lean. the problem is elsewhere.

[xcelr8]

the intake can't make it lean unless the system has a leak. you could theoretically run with no intake and that wouldn't make it lean. the problem is elsewhere.

that's really good to know...so an air leak somehow maybe behind the MAS? There could be air there. I used a very thin gasket.

Thanks for the help.

[SGT.BATGUANO]

Could be that or maybe a problem with the modded MAS. On the grand nationals you could pull one MAS screen, but if you pulled both, the turbulence would skew the readings.

Got a obd tester with reading capability? or Swap the stock MAS on the front of the TB TEMPORARILY(no air filter!) and see if you still get a lean code.

The engine can't draw more air due to intake design without forced induction, but, it can draw in more unmetered air through a leak, than the computer can compensate for.