A4 ported MAF kills transmission? HELP!
A4 ported MAF kills transmission? HELP! I was reading that a ported MAF, Granatelli, lower trans line pressure and causes sloppy shifts and can produce more heat - resulting in transmission failure. Any word on this? HELP! Should I even bother buyng one. Forget it? Is it worth it? Can I fix this problem? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />
TECH Enthusiast
Joined: Jul 2002
Posts: 731
Likes: 0
From: dyersburg,tn
Re: A4 ported MAF kills transmission? HELP! I have ends on my car with a vig 3200.It does shift softer but most of that is the vig.Put a transgo in it it will cure your problems if you have them.
Re: A4 ported MAF kills transmission? HELP! theres 3 things you can do
1. buy ls1edit and firm up the shifts and a bunch of other things.
2. install a shift kit
3. the easiest thing to do,, drop the tranny pan, and give the epc solenoid about 1/4 of a turn.
1. buy ls1edit and firm up the shifts and a bunch of other things.
2. install a shift kit
3. the easiest thing to do,, drop the tranny pan, and give the epc solenoid about 1/4 of a turn.
TECH Addict
Joined: Dec 2001
Posts: 2,850
Likes: 0
From: Plainville,MA
Re: A4 ported MAF kills transmission? HELP! </font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Dear John:
<strong>I was reading that a ported MAF, Granatelli, lower trans line pressure and causes sloppy shifts and can produce more heat - resulting in transmission failure. Any word on this? HELP! Should I even bother buyng one. Forget it? Is it worth it? Can I fix this problem? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well after 6,000 miles with ported maf ends I just lost 3rd and 4th in my car ! <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" />
It all started well, but turned awful in 8 short months ! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
https://ls1tech.com/ubb/cgi-bin/ulti...;f=24;t=000294
<strong>I was reading that a ported MAF, Granatelli, lower trans line pressure and causes sloppy shifts and can produce more heat - resulting in transmission failure. Any word on this? HELP! Should I even bother buyng one. Forget it? Is it worth it? Can I fix this problem? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" /> </strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well after 6,000 miles with ported maf ends I just lost 3rd and 4th in my car ! <img border="0" alt="[whiner]" title="" src="graemlins/gr_cry.gif" />
It all started well, but turned awful in 8 short months ! <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" />
https://ls1tech.com/ubb/cgi-bin/ulti...;f=24;t=000294
12 Second Truck Club
Joined: Feb 2002
Posts: 5,574
Likes: 0
From: Sacramento, CA
Re: A4 ported MAF kills transmission? HELP! Put a stock descreened MAF on it and call it good. Ported MAFs on 99+ cars cause nothing but trouble when the cars are modified. They also make tuning harder and do not create any significant HP. You can get the same amount of HP by using LS1 Edit or a MAFT to tune the air/fuel. They bigger sized MAF is not going to do anything for you unless you are running one of the big cube motors. The majority of fast cars that I have seen run the stock unit.
I had too many problems with a ported MAF on my car. For 8 months I could not figure out why the car woult not shift correctly and seemed so soft on the shifts. I swapped to a stock unit and IMEDIATELY felt the difference and the thing would shift like it was supposed to. So I am speaking from first hand experience, not just something I read somewhere. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
I had too many problems with a ported MAF on my car. For 8 months I could not figure out why the car woult not shift correctly and seemed so soft on the shifts. I swapped to a stock unit and IMEDIATELY felt the difference and the thing would shift like it was supposed to. So I am speaking from first hand experience, not just something I read somewhere. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
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Here's the word.
When you port the MAF you lie about airflow.
When you lie about airflow you lie about motor torque.
When you lie about motor torque you lie about line
pressure needed to hold said torque without slipping.
So say hello to your new bucket of friction silt, from
your 300HP disc sander.
Of course this is all fixable in the tune but ghetto mods
tend to be done with a corresponding level of clue and
funds. Personally I think this kind of thing accounts for
why some people go through transmissions like popcorn
with low mods, and some people get good service out of
one despite high power levels and racing weekly.
When you port the MAF you lie about airflow.
When you lie about airflow you lie about motor torque.
When you lie about motor torque you lie about line
pressure needed to hold said torque without slipping.
So say hello to your new bucket of friction silt, from
your 300HP disc sander.
Of course this is all fixable in the tune but ghetto mods
tend to be done with a corresponding level of clue and
funds. Personally I think this kind of thing accounts for
why some people go through transmissions like popcorn
with low mods, and some people get good service out of
one despite high power levels and racing weekly.
Last edited by jimmyblue; Jun 11, 2011 at 09:03 PM.
