Quote:
Originally Posted by Tim M
So was a bit excited after reading the MAF orientation...woke up at 0545 on a Saturday to explore!
Some images:
Original as purchased alignment:
Dissection - MAF removal...appears correct:
Tube orientation...appears correct (ie not flipped end for end):
If one tried to install the MAF sensor backwards...the screws/bosses do not line up - unable. Also note the MAF connector damage (not by me!)...don't believe it to be an issue:
Updated installation dot to dot orientation...much closer to 10 o'clock:
Updated install overhead:
I disconnected the battery during this to refresh the computer (if this one does that) and took for a short drive.
Cautiously, I would say the car is smoother at low RPM (a complaint of mine) and it now performs the no-lift shifts as one expected. I can't say it worked prior (have no reason why now...). Unfortunately, my backside is not calibrated, but it does not seem to be a 12.5 second car still.
As Dave (thanks!) mentioned, we will hopefully get a couple of 1LE's on the same dyno for a comparison.
Appreciate all the assistance on this odd deal. Very impressed with the car otherwise! |
Maf can't be put on backwards, only fits one way, but the maf housing tube part of the intake needs to be clocked properly to the air box.
The stock one is one piece so you can't get it wrong but most of the aftermarket ones need the maf tube to be clocked to a certain orientation. The gm and cai one have mark's on the tube and air box that need to be lined up.
Just looking at yours it looks 10 to 20 degrees off. Compare it to the image posted a few messages up comparing the gm parts guy one vs yours.
Idk if that would in anyway account for the power loss but I have been told maf orientation is important in these cars and maybe that combined with it not being calibrated correctly is the problem.