Ported MAF Ends a good idea?
Racer
Joined: Mar 2002
Posts: 488
Likes: 0
Re: Ported MAF Ends a good idea? (Joe C5 Coupe)
Do a search on this topic in here and on LS1Tech.com.
If you have a 6-speed then I say go for it since almost everyone I know sees those gains. But if you have an A4 then I would be hesitant if you plan on modding it. Myself and many others now are having shifting problems and worse because of the signal sent from the MAF through the PCM to the trans.
If you have a 6-speed then I say go for it since almost everyone I know sees those gains. But if you have an A4 then I would be hesitant if you plan on modding it. Myself and many others now are having shifting problems and worse because of the signal sent from the MAF through the PCM to the trans.
Drifting
Joined: Oct 1999
Posts: 1,576
Likes: 0
From: Austin TX
Re: Ported MAF Ends a good idea? (F8LPONY)
I have two MAFs - one stock with screen, the other ported (ala Dremel tool) and de-screened.
I have logged hours of Autotap data with both, and have 'tuned' both using the MAF Translator.
Overall, I am getting more hp and torque with the stock MAF. The ported MAF causes a lot of weird fuel trims and a persistent WOT knock retard that I am unable to tune out with the MAFT.
Different cars yield different results though - and you might just be fine using the ported ends. Chevy removed the screen and opened up the MAFs in 2001, but not without PCM modifications to account for the variance in the airstream.
IMO, best to leave anything to do with the MAF alone with the exception of using the MAFT to adjust for increased flow rates as a result of cold-air intakes, etc. thru a STOCK MAF.
F
I have logged hours of Autotap data with both, and have 'tuned' both using the MAF Translator.
Overall, I am getting more hp and torque with the stock MAF. The ported MAF causes a lot of weird fuel trims and a persistent WOT knock retard that I am unable to tune out with the MAFT.
Different cars yield different results though - and you might just be fine using the ported ends. Chevy removed the screen and opened up the MAFs in 2001, but not without PCM modifications to account for the variance in the airstream.
IMO, best to leave anything to do with the MAF alone with the exception of using the MAFT to adjust for increased flow rates as a result of cold-air intakes, etc. thru a STOCK MAF.
F
Thread Starter
Burning Brakes
Joined: Apr 2002
Posts: 888
Likes: 0
From: San Diego CA
Re: Ported MAF Ends a good idea? (Flintstone)
Cool thanks for the help guys. I did a search and got some good info from there. From your results Flinstone as well as others, I think it is best to leave it stock for now.
Le Mans Master
Joined: Dec 1999
Posts: 5,497
Likes: 55
From: Jupiter, FL
Re: Ported MAF Ends a good idea? (Joe C5 Coupe)
My 2 cents worth. I pulled the screen out of my stocker Mass Air. I picked up 8 rwhp with this mod alone! The car has kept gain for 3 years now and is running great! My girlfriends WS6 A4 has the screen pulled as well with no problems and a 9 rwhp gain! Now every car is a little different but it works for me!
