!MAF Porting HP
12-25-2002, 04:27 AM
#1
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!MAF Porting HP
Well I just completed this modification, took me a good hour to perform, i basically just took my time. I noticed a good HP gain when WOT and over 20 MPH. Just curious, how much horsepower does this mod give you?
12-25-2002, 10:51 AM
#2
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Join Date: Dec 2002
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Only about 1hp after the computer learns that the car is running rich from the modification of a finely tuned electoric device. Right now the car feels faster because it's running lean because it's getting more air than it knows. It'll figure it out soon and start to add more fuel to even it out.
12-25-2002, 09:13 PM
#4
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Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
12-26-2002, 01:36 AM
#5
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Originally posted by Geeterman
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
maybe u drive your car better now.....theres other factors u have to consider..maybe track was better preppared
12-26-2002, 06:38 PM
#6
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No, it has nothing to do with how i drive my car because the mph went up by 4 mph. When I got the 12.9 it was actually a crappy 2.17 60 foot time and I have pullen much better times than that before all the mods. In other words, the car gained a lot more power with the lid, pulley and maf ends, so I'm willing to bet they added a decent amount of power. It's also an A4, so it's pretty consistant driving 
12-26-2002, 07:03 PM
#7
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Join Date: Nov 2002
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Originally posted by Geeterman
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
12-27-2002, 11:24 AM
#12
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Originally posted by stik6shift98
ya ihad stock p o s clutch and stock p o s tires......that sucked a$$.....i got 13.3 but didnt go with lid and pulleys and stuf to see the difference....
i wish i had tho
ya ihad stock p o s clutch and stock p o s tires......that sucked a$$.....i got 13.3 but didnt go with lid and pulleys and stuf to see the difference....
i wish i had tho
12-27-2002, 11:49 AM
#13
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Join Date: Apr 2001
Location: Sac, CA
Posts: 674
Originally posted by Geeterman
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
Actually I would disagree with zdawg, I bought soem ported maf ends and with the addition of those, a lid and a pulley I dropped 4 tenths at the track. When I dynoed my car, it also had a very lean air/fuel mixture. I don't think the computer does learn itself back to stock that well, if it did, that would gain you even more hp. In the end, I would get your car dynoed to figure out your air fuel mixture, to make sure it's ok, and I also think the ported maf will add around 5-7 hp, if the car is running alright. If you start to hear pinging in the engine, then it's time to put the stock maf back in.
12-27-2002, 06:52 PM
#14
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Location: Burbs, Chicago
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Yeah, it was very lean. Around 15:1 at 4000 rpms and about 14.5:1 at 6000 rpms, I would say that's really lean. This was before the predator. After I installed the predator it went down to 13:1 at 6000 rpms.....
12-27-2002, 06:54 PM
#15
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Location: Burbs, Chicago
Posts: 156
In other words fellas, I'm not saying that a ported maf is going to make a gigantic difference, but I do think it makes a noticable difference, even if only a slight one. They work for some cars, for others they don't. It's a pretty cheap mod to experiment with...
