badmfkr

iTrader: (4)

I heard not to port the MAS on the A4 car it messes up the shifting of gears.
anyone here port there A4s MAS.
Thanks

MyLS1Hauls

iTrader: (2)

Its a worthless mod nowadays that LS1Edit/hp tuners is out. It was just used to trick the PCM.

Cheatin' Chad

iTrader: (3)

MAS=MAF?

P orting the Mass Air Flow sensor ends is generally considered a bad idea for an A4 car because the MAF tends to report a lower load condition than actually exists. This in turn will increase the chances of transmission failure due to (I believe) slippage.

I don't know that the tricking of the PCM has to do with the MAF.

People did modify the IAT sensor to get more timing.But that's not the MAF.

MyLS1Hauls

iTrader: (2)

Its a known fact that porting the MAF/MAS tricks the PCM into feeding more timing. Whenever the PCM sees lower load, it increases the ignition timing. It also creates problems with the LTFTs.

NightHawk

iTrader: (1)

Not a good idea...just pull the screen and leave it the hell alone.

PREDATOR-Z

So how about aftermarket MAFs like Granatelli.

ddelallata

iTrader: (2)

I still can't figure out the drawbacks to descreening an MN6 car. Everyone just says not to do it , but doens't offer an explanation. I know that on the A4 cars the MAF reading is used to adjust the trans line pressure but someone please post what happens on a Manual car. I descreened mine a few weeks ago and my car seems perfectly fine. My A/F meters on the A-pillar still give the same readings as before. They go from rich to lean as they did before without a tendency to stay in one particular area.

MyLS1Hauls

iTrader: (2)

Granatelli MAFs are junk IMO (no offense to JR)...absolutely unnecessary with LS1edit/HP tuners. They have screwed up airflow curves programmed into them and are a pain to tune.

There is nothing wrong with descreening a MAF. Thats different than porting it. Mines descreened, as are the new LS6 MAFs.