FAST TOYS BLEM MAF ENDS
At the same time i descreened my MAF, so after reading this i'm thinking abot MAF ends...
So am i running rich/lean now that i descreened?
How would the MAF ends work w/o a MAF translator on my '99?
Also, are all MAF ends the same, thunder, tbyrne, fasttoys, etc. i ask this cause i wnat billet or high polished ones.
Thanx alot! <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />
<small>[ March 26, 2002, 11:12 PM: Message edited by: cobrakillerta ]</small>
<strong>I was snooping around under my hood last weekend
(important to stay ahead of the pack) and i studied maf sensor, it definitely is a restriction to the rest of the induction system.
My question is will a 2001 Ls1 respond to ported ends and compensate for higher air flow or will a translator automaticly be needed? TIA</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">I did Ported MAF ends along with a lid on my 01 WS6. This was last year when i first got the car and i have had no problems with pinging in any gear ever since. After the install the car felt stronger and it also had that nice induction growl now. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> After driving it for a few days the car felt alittle sharper than before, needless to say i was happy.
I Don't have a MAFT, I never bought one cause i never had any pinging im sure there is some more power there, the question is how much., cause i don't wanna spend 170 dollars for 3 or 4 hp. Anyways i hope this helps ya out alittle <img border="0" title="" alt="[Cool]" src="gr_images/icons/cool.gif" />
<strong>i studied maf sensor</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Be ready...I'll be testing you over it tomorrow. <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" /> <img border="0" title="" alt="[Razz]" src="gr_tounge.gif" /> I'm going to play the devil's advocate here. Patrick G did the swap on his car only he went from a set of ported ends to a set of stock MAF ends. His car has heads/cam and 380-400 RWHP, depending on the dyno. He did not lose any HP by going to a set of stock ends after tuning it with a MAFT.
For those of you that have added the ported ends, have any of you run ATap to see how the ends are affecting your a/f ratio and your timing at WOT? Anyone want to wager that the gains being seen are from added timing and a leaner a/f ratio and NOT from added airflow?
Also, you guys might do a search in the drivetrain section about ported MAF ends on an automatic. Patrick G was also the first one to bring this up. One of the parameters that the PCM looks at to determine transmission line pressure at WOT is the MAF flow rate. A set of ported ends will make the PCM think that there is less airflow, and it will reduce the line pressure at WOT. This will slip the clutches inside your transmission, causing clutch failure sooner than would normally occur. One fix would be to get custom tuning and have your trans. line pressure set to vary directly with your throttle position sensor. Then there won't be these varying parameters to determine whether or not you'll get the line pressure needed at WOT.
I was thinking, speed inc. has STOCk ends that they polish and descreen on an exhange + $50 basis.
So, basically it's just a shiny descreened stock MAF, i was thinking of going w/ on of those, so that i don't have to worry to much about pinging and such since it will be stock ends w/ the stock divider thingy to smooth air around the sensor.
Sound good?
Thanx
<small>[ March 27, 2002, 10:54 AM: Message edited by: cobrakillerta ]</small>
and didn't see any improvement at all?????
Went to the track and mph was the same???
They look a whole lot better, with no obstruction,
but then I got thinking, maybe the GM MAF has the
vanes for a reason????
I swapped the stock ones back in???no difference??
That would explain leaning out mixture with ported maf making more power. My observation was that throttle body appeared to be capable of more flow than stock descreened maf. If ported ends are used and mixture is adjusted as well as timing, i would think motor would benefit from more maf airflow. What do you think? (on H/C car)
I tried the whisper MAF ends on my 99 A4 and no difference. Went back to stock. GM's pays their engineers mega $$$ to come up with a flow straightening screen and divider vane on the stock MAF for a reason and then calibrate the ECM for same.
Have any of you A4 guys with ported MAF ends ever considered the reduction in trans. line pressure being caused by the MAF sensor reading an incorrect load due to the ported ends?
LMK.......
The Best V8 Stories One Small Block at Time
Put the stock, descreened unit back on and all problems solved. Also my timing was at 24 degrees at WOT before, and just A-tapped today and saw 28-30 degrees at WOT (no KR). My O2's and fuel trims are now much better.
With that said I have a friend with a 02 Z28/M6 who is running the ends with good results. So it seems to vary by car and year.
My car definitely picked up some power with the descreening and PP of the MAF, not to mention the Lid and FTRA.
Hey Phillip, drop me an E-mail if you come across some blemished MAF ends. <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> Are they still running about 60.00 per/set?
Thanks
Nathan
<small>[ July 30, 2002, 01:41 AM: Message edited by: BLK:WS6&BLK:SS ]</small>
Well here it is 8 months later and 3rd and 4th are toast in my A4 tranny ! <img border="0" title="" alt="[Frown]" src="gr_sad.gif" />
Verdict !!
Bolting on ported maf ends = NFG without tuning to increase line pressure ! <img border="0" alt="[cry]" title="" src="graemlins/gr_cry.gif" /> <img border="0" alt="[bang head]" title="" src="graemlins/gr_banghead.gif" />
<small>[ April 04, 2003, 09:50 PM: Message edited by: Orange Krush ]</small>

I'm sure it has much to do with timing or lack there of!










