Idea on porting MAFS
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From: Nawf Carolina
Re: Idea on porting MAFS Thats what I was thinking. Also, with an aftermarket lid (round at the exit instead of oval and then no silencers) I dont believe there is as much turbulence, hence, not as much need for a screen. New ZO6 MAFs dont have a screen.
J.
J.
Re: Idea on porting MAFS Doesn't seem like it solves the fundemental issue: If it flows more air at a given pressure level, how does the meter know that extra air is flowing?
Doesn't the screen eliminate the turbulence in the flow prior to the MAF, rather than turbulence caused within the MAF?
Doesn't the screen eliminate the turbulence in the flow prior to the MAF, rather than turbulence caused within the MAF?
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From: Mississauga, Ontario
Re: Idea on porting MAFS I've never felt that MAF screen really does all that much as far as straightening the airflow. I took my screen off about a week or two before I ported the MAF and I noticed no change whatsoever in either horsepower, or driveability. The car didn't idle funny, it didn't surge, nothing. So if the airflow was turbulent without it, you'd think something would show up.
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Re: Idea on porting MAFS When I removed the screen in my stock MAF the LTRIMS rose about 2-3% and gave me about 3/4 of a degree in timing. That was all I noticed as well.
When I put in the ported unit my LTRIMS shot up to 16% and I gained an additional degree of timing but had cruise to WOT lean conditions on the dyno.
Chris
When I put in the ported unit my LTRIMS shot up to 16% and I gained an additional degree of timing but had cruise to WOT lean conditions on the dyno.
Chris
Launching!
Joined: Nov 2001
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From: So. IL
Re: Idea on porting MAFS This can be done with the right tools. I did it this way when I originally ported my MAF. I took the screen out a few weeks later. Don't know if it made any difference.
I used a Roto-Zip to cut the center divider. I set the bit depth and used it like an Endmill. Worked really well. I marred the screen up just a little on both sides. Took a metal scribe and re-opened the holes in the screen I jacked up. (5-6 on each side)
Its not impossible if you have the right tools. A Mill would be the ideal machine to do this on. Wish I still had one.
Rick
I used a Roto-Zip to cut the center divider. I set the bit depth and used it like an Endmill. Worked really well. I marred the screen up just a little on both sides. Took a metal scribe and re-opened the holes in the screen I jacked up. (5-6 on each side)
Its not impossible if you have the right tools. A Mill would be the ideal machine to do this on. Wish I still had one.
Rick
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Idea on porting MAFS I have been thinking about this the past couple of days and wanted to run it past you. We all know porting the MAF, removing the screen and center divider increases airflow but at the same time reduces the sensors ability to meter air properly. What if you removed the center divider, ported the inside of the MAF and left the screen in place? That way the airflow would not be turbulent and hit the sensor across the MAF much more evenly. Do you think this would reduce the LTRIM differential but still support higher airflow and better cruise to WOT AF transitions?
Food for thought and debate <img src="gr_stretch.gif" border="0">
Chris
Food for thought and debate <img src="gr_stretch.gif" border="0">
Chris
Re: Idea on porting MAFS Good luck knocking out the screen without damaging it. Interesting idea, but hard to do.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
