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Token Engin-nerd
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Discussion Starter #1
I read this thread

http://www.focusfanatics.com/forum/showthread.php?t=69281

and was pretty much sold on using the MAFia and a smaller tube. But, as we all know, a larger tube with no MAFia is less expensive (the tradeoff being it is less responsive at throttle tip-in, and you cannot change the volt range if you're only seeing 3 or 4 volts) .

So after searching and getting nowhere, and recalling many times where this question goes somewhat unanswered in many threads i've browsed in the past, I want to find out from the experienced tuners and builders what kinds of power levels can be achieved with what size tubes and with or without the MAFia.

So pretty please, with cherries on top this time, How much power can you make on a

A) 2.5" tube
B) 3" tube
C) 2.5" tube w/ MAFia
D) 3" tube w/ MAFia

?

[cheers] and thank you to those who answer.
 

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Premium Member
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4,739 Posts
on my roush setup i had it was a 3in suck thru and it did 250whp
 

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Premium Member
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Thats what i was thinking Tom. just get both
 

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Token Engin-nerd
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Discussion Starter #5
Some people have a budget to follow. I'd rather spend that $200 on tuning. I would rather just do a 3" alone, or use the MAFia and my regular 2.5" tubing

So, what you're saying is, even for "conservative" power levels like 220whp, 3" alone is not enough?
 

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i plan on running 2.5 with a mafia
 

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what the hell is a MAFia
 

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Token Engin-nerd
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Discussion Starter #8
read the thread I linked in the first post it explains everything
 

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so all it is is a bigger maf tube. and as i understand u only need one if ur going fi?
 

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Token Engin-nerd
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Discussion Starter #10
That is the point of this thread, to find out what is needed for what power levels
 

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I made 240HP and 240TQ with a 2.5" tube and a Mafia.
03OrangeSVT did the intial tune which was REALLY close. Tom helped clean it up a bit, and I finished it off after learning what to do from the other 2.
Maybe Tom can tell me if Im wrong but heres my findings.
The computer can read 1023 maf ad counts. MAF ad counts and MAF voltage tell the computer how much fuel to use. My MAF ad Counts have never went above 900. I assume this means I could increase another 123 Counts before limiting the power I could make. There are also additional settings which would give me a greater range. Im not sure what the range ends at, but if my thinking is correct you could make a lot more power with a 2.5" tube before going beyond the MAF's range.
Keep in mind I am NO expert.
 

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At this point with a 3" tube and 15psi I am pegging my MAF at 5700 rpms. I have no dynos but I would assume about 250-260whp range. Too much air to be taken into account. I picked up a MAFia off of amazon for a hundred bucks so my future tune will include usage of that. I would think 3" tube + MAFia would be ideal.
 

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I.S.A.I.K.I.
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5,413 Posts
Pete, there's a local shop here that sells Mafias for less than $150 brand new. It might seem steep, but it washes out the shipping charges.

FYI, for my setup, I am going 3" Maf tube w/Mafia to get to my 300 WHP goal.
 

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Token Engin-nerd
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Discussion Starter #14
I made 240HP and 240TQ with a 2.5" tube and a Mafia.
03OrangeSVT did the intial tune which was REALLY close. Tom helped clean it up a bit, and I finished it off after learning what to do from the other 2.
Maybe Tom can tell me if Im wrong but heres my findings.
The computer can read 1023 maf ad counts. MAF ad counts and MAF voltage tell the computer how much fuel to use. My MAF ad Counts have never went above 900. I assume this means I could increase another 123 Counts before limiting the power I could make. There are also additional settings which would give me a greater range. Im not sure what the range ends at, but if my thinking is correct you could make a lot more power with a 2.5" tube before going beyond the MAF's range.
Keep in mind I am NO expert.
What is your MAFia setting #? Knowing this will help us see if you are maxing out the MAFia in the 2.5" tube at that power level.

Pete, there's a local shop here that sells Mafias for less than $150 brand new. It might seem steep, but it washes out the shipping charges.

FYI, for my setup, I am going 3" Maf tube w/Mafia to get to my 300 WHP goal.
ok thanks i think i know who youre talking about, PM me.
 

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Token Engin-nerd
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Discussion Starter #17
The MAFIA setting is 3.
OK thank you. I think for myself then (220 goal, 230 max) I will go with the 2.5" and MAFia, since 3" is not adjustable and apparantly easy to max out, and the 2.5" tube will save some energy from the air not having to go 2.5->3->2.5.

Keep the experiences coming! [cheers]
 

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I.S.A.I.K.I.
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I won't have to deal with that. My MAF tube starts at 2.5 up to the MAF sensor and stays a full three to the TB. Precision Turbo parts FTW.
 

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I would do the 3" and a MAFia..........
 
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