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Author Topic: MAFless - convert maf to map sensor?  (Read 48619 times)
mbwiejska12
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« on: March 12, 2013, 06:17:30 AM »

Hello, Smiley

I'm new here. I want going mafless in my s4 b5 because i'm going to do over 600hp on gtx35 turbo. I read about mafless but i have obscurity. I can disconnect maf and already tune any map? Which map i should tune after doing mafless so that fuel would good? Is the car will work correctly, while map sensor is before throttle plate (not see the vacuum)? I come up with an idea to connect the maf cables to the map sensor connector after the throttle plate and scalling the maf map for this pressure  that ECU would be able to see vacuum beyond closing throttle (would be two map sensors). Whether this would work? If not, how to do the classic mafless in order to my s4 to work properly?

Best regards Smiley
Mateusz
« Last Edit: March 12, 2013, 06:22:18 AM by mbwiejska12 » Logged
rnagy86
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« Reply #1 on: March 12, 2013, 06:54:04 AM »

Hello, Smiley

I'm new here. I want going mafless in my s4 b5 because i'm going to do over 600hp on gtx35 turbo. I read about mafless but i have obscurity. I can disconnect maf and already tune any map? Which map i should tune after doing mafless so that fuel would good? Is the car will work correctly, while map sensor is before throttle plate (not see the vacuum)? I come up with an idea to connect the maf cables to the map sensor connector after the throttle plate and scalling the maf map for this pressure  that ECU would be able to see vacuum beyond closing throttle (would be two map sensors). Whether this would work? If not, how to do the classic mafless in order to my s4 to work properly?

Best regards Smiley
Mateusz

Standalone ECU. (VEMS, DTA)
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mbwiejska12
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« Reply #2 on: March 12, 2013, 07:25:54 AM »

I don't want standalone. Standalone take away a lot of facilities that for example have Motronic. My car will be a street car. If I want to have standalone I'd not be writing this post on the forum. Smiley
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julex
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« Reply #3 on: March 12, 2013, 07:41:53 AM »

There are numerous threads about this on this forum, just search.

You will lose traction control though, just keep that in mind.
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prj
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« Reply #4 on: March 12, 2013, 08:42:51 AM »

There are numerous threads about this on this forum, just search.

You will lose traction control though, just keep that in mind.

If you want the traction control back, I have a solution Wink
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julex
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« Reply #5 on: March 12, 2013, 09:16:42 AM »

If you want the traction control back, I have a solution Wink

I imagine a coding change to supply load after all Smiley..

I might be academically interested in it... and maybe even empirically since I would love to feed turbos directly from two cone filters instead of screwing around with y-pipe et al.
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mbwiejska12
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« Reply #6 on: March 12, 2013, 11:42:08 AM »

Could someone write anything like a tutorial? What maps i should tune after mafless (mainly fuel)? And if there is a possibility of tune up the car at closed throttle?
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julex
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« Reply #7 on: March 12, 2013, 12:28:15 PM »

 Huh I wouldn't expect any tutorials if you don't even want to read threads already posted about it man.
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ddillenger
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« Reply #8 on: March 12, 2013, 12:31:40 PM »

Huh I wouldn't expect any tutorials if you don't even want to read threads already posted about it man.

That, and if you need a tutorial it's so far out of your league you should attempt something a bit more traditional first.
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catbed
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« Reply #9 on: March 12, 2013, 12:44:19 PM »

If you want the traction control back, I have a solution Wink

I've been researching MAFless, and I think I found out how. But I would love to know how you do it if you care to share.
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prj
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« Reply #10 on: March 12, 2013, 01:09:33 PM »

Not for free, sorry.
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mbwiejska12
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« Reply #11 on: March 12, 2013, 03:32:42 PM »

In almost every thread I read: "Not for free". This is already the world. I wrote "like tutorial". I'm from Poland and certain technical words be tough to me. Thread can be closed i guess because leads nowhere. My poor ideology of two map sensors come to grief. Smiley

« Last Edit: March 12, 2013, 03:37:14 PM by mbwiejska12 » Logged
prj
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« Reply #12 on: March 13, 2013, 08:16:26 AM »

Two MAP sensors will work but requires re-write of ECU code.
Again, not for free Smiley
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NOTORIOUS VR
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« Reply #13 on: March 13, 2013, 08:24:50 AM »

Again, not for free Smiley

You should just put that in your sig Tongue
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SCHNELL ENGINEERING BLOG ·  STANDALONE ECUS · TUNING · DYNO · WIRING · PARTS · VEMS
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n00bs start here: http://s4wiki.com/wiki/Tuning
prj
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« Reply #14 on: March 13, 2013, 08:33:40 AM »

You should just put that in your sig Tongue

Kinda cheeky of you don't you think? Considering the amount I've contributed to the forum.
Yeah sorry, I am not going to spend my time working specifically on something you need for free. I have enough cars to tune for paying customers.
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