AFM question
02-23-05, 11:46 PM
#1
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AFM question
ok, i know there has been a lot of talk about this in the past, but has anyone found a way to improve the stock AFM... with stock ECU... or has anyone found any replacements from other vehicle types (that actually work)....
02-24-05, 05:13 AM
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reason im asking is because im gonna be porting and cleaning up my intake manifolds today, and cleaning my aux. port actuators, but i feel that with the stock AFM, i will see little or no gains
02-24-05, 12:33 PM
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Engine, Not Motor
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Short answer: No.
Long answer: Yes, under two specific circumstances:
1. If you can find an HKS VPC. It is designed to replace the AFM with a MAP sensor. Very rare, very expensive, much easier to pop your engine then if you had the AFM.
2. If you have some electronics knowledge, and can work with microcontrollers, you can home brew something without too much trouble.
Long answer: Yes, under two specific circumstances:
1. If you can find an HKS VPC. It is designed to replace the AFM with a MAP sensor. Very rare, very expensive, much easier to pop your engine then if you had the AFM.
2. If you have some electronics knowledge, and can work with microcontrollers, you can home brew something without too much trouble.
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02-25-05, 01:13 AM
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I'm a boost creep...
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Actually there is a relatively cheap and easy way. Read this if you're keen (you need to be a member).
http://www.autospeed.com/cms/A_2424/article.html
http://www.autospeed.com/cms/A_2424/article.html
02-25-05, 01:29 AM
#11
King of the Loop
I see it wouldnt be as easy as a capacitor in the right place. Would it be possible to just wire it open, or would it make u run too rich? What about leaving it hooked up but just removing it from the intake itself? Too lean? Just throwing up suggestions.
Or at least a summary?
02-25-05, 09:49 AM
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HAILERS
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It's not a forum. It's an online magazine. Cost? Cheap. Tons of back issue articles. If he posts it for free on this site.........I'll snitch. No free loaders allowed.
Last edited by HAILERS; 02-25-05 at 09:53 AM.
02-25-05, 03:16 PM
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It's a big two-part article with lots of pics and some links. Too much work to copy it in a useful way, plus I'm sure they'd be less than happy about their pay articles being posted on open forums.
Basically it's an AFM bypass that diverts some of the airflow around the AFM, and then uses a DIY interceptor kit to correct the AFM's output. It works perfectly, and on this car reduced pre-turbo intake restriction by half.
Basically it's an AFM bypass that diverts some of the airflow around the AFM, and then uses a DIY interceptor kit to correct the AFM's output. It works perfectly, and on this car reduced pre-turbo intake restriction by half.
02-26-05, 10:16 PM
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Yea same. The afm is just one giant resistor, so I mean if you can make a box that does the resisting part, in wich it tells the ecu how much air is flowing via the flap position, and make a seperate channel for air, thats pretty sweet.
I wonder if the box can go beyond the stock afm values, as in you can compensate for much larger airflows by programing the box to give a larger resistance signal than the stock one was ever designed to do.
Thx NZ for the site, I'll have to subscribe as well
I wonder if the box can go beyond the stock afm values, as in you can compensate for much larger airflows by programing the box to give a larger resistance signal than the stock one was ever designed to do.
Thx NZ for the site, I'll have to subscribe as well
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