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Old 01-30-2005, 05:00 PM   #1
Project Rex STi
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Question Perrin Big MAF with UTEC???

Just wondering what everyones experiences were with this??? I have a 04 STI. I already have the UTEC and am planning to replace my MAF tube soon. I was thinking Perrin modified STi injectors and the big MAF tube. I guess i should have bought a Hydra from the beginning, but oh well. How possible is this to get tuned right on an STi UTEC? Thanx.
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Old 01-30-2005, 10:35 PM   #2
Physics Junkie
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It would be very easy to scale with a UTEC. Although I wouldn't recommend buying a large MAF tube unless you plan on utilizing them.
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Old 01-30-2005, 11:55 PM   #3
STi_Guy04
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okay guys help me out What really does the MAF do? why is it so important to tuners?
I`am new to this and dont know very much but I`am learning..
I was going to buy a hydra but some guy said it sucks, and its nothing but problems form the day he got it, then he said he sent it back and bought a UTEC.
whats your opinion on this issue
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Old 01-31-2005, 02:54 AM   #4
blinguskahn
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Mine is tuned with the UTEC and BigMAF as well as Perrin Modded Injectors. The UTEC allows you to scale the MAF sensor accordingly.

Helpful hint: The perrin BigMAF is 40% larger than the stock but you will only want to scale it 22%. the PDX guys did extensive testing along with Phil from Element Tuning regarding this particular subject. % larger of Stock MAF size does not equal % of MAF scale.
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Old 01-31-2005, 07:04 AM   #5
Project Rex STi
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Thanx, i really appreciate the info
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Old 01-31-2005, 10:48 AM   #6
Soon2Bgreat
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Quote:
Originally Posted by STi_Guy04
okay guys help me out What really does the MAF do? why is it so important to tuners?
I`am new to this and dont know very much but I`am learning..
I was going to buy a hydra but some guy said it sucks, and its nothing but problems form the day he got it, then he said he sent it back and bought a UTEC.
whats your opinion on this issue
No offense man...but search. You hijack every thread in site with questions that can be answered with a search. If you really don't want to search for things like ''what is a MAF'' then start your own thread in the proper forum please. Good luck with everything, pm me if you need some help.
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Old 01-31-2005, 11:44 AM   #7
mick_the_ginge
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Only go to a BigMAF if you are going to get a turbo that is going to overflow the stock MAF tube and sensor. If you do then 550 stock size and 650 UTEC injector size will work to get you started.
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