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to MAF or not to MAf that is my question

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Old 06-05-2006, 08:16 AM
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Default to MAF or not to MAf that is my question

just finished the final mock up of all the chgarge piping and im down to the last pipe and my knowlede runs out.......

do a use a stock MAF???

or do a loose the stock MAf completely and gor with just a 3 bar map sensor set up??

going nuts cause i dont know enough about this what to do??

any advice would greatly help need to knolw what i should do before i finish this last pipe!!!


where do i get a 3 bar map an dwireing harness???
Old 06-05-2006, 08:59 AM
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I'd recommend a truck/Z06 MAF to keep best driveability if you are going to keep it on the street primarily. Many others will say that gives up some power... but it also retains a margin of safety to help deal with changing weather conditions.
Old 06-05-2006, 09:04 AM
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Matter's what your setup is. Going 2bar or 3bar won't give up any drivability.
Old 06-05-2006, 09:11 AM
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Originally Posted by CHarris
I'd recommend a truck/Z06 MAF to keep best driveability if you are going to keep it on the street primarily. Many others will say that gives up some power... but it also retains a margin of safety to help deal with changing weather conditions.

what year truck?

its manily a track ....nice day/night street car....
Old 06-05-2006, 09:18 AM
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Originally Posted by Slowhawk
Matter's what your setup is. Going 2bar or 3bar won't give up any drivability.

ok i know you know what your talking about

my set up is...

mtiu iron block built for boost all forged yadda yadda 6.o heads springts retainger yadda yadda custom cam from cam motion

6.0 ss truck manifolds flipped cermanic cfoated extrude honed

turbo centered in front t-76 for now but room to go to 91 thumper.. later one

all cutom mandrel bent stainless tig welded yadda yadda

speed inc race tank bosh single 420 fuel pump speed incd rails z06 intake

12 bolt 373 gears

does that help???
Old 06-05-2006, 09:51 AM
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I feel the need to hijack real quick. I've read quite a bit about MAP sensors on here. what is the difference between 2-bar and 3-bar? When is one necessary over the other?
Old 06-05-2006, 10:23 AM
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2 bar will read boost up to 15 psi and 3 bar will go to 30 psi.
Old 06-05-2006, 11:06 AM
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Damn, that was simple. Thanks for the explanation!

Where is the MAP usually placed, in the intake or piping? What does it hook up to, as opposed to the MAF sensor?
Old 06-05-2006, 11:47 AM
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It plugs into the back of the block behind the intake. You have one stock... its jsut a 1 bar set up thought, swap it out for a 2 or 3 bar
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Old 06-05-2006, 12:02 PM
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it hooks into the back of your manifold where the 1BAR map sensor is located... The way that your computer is designed is if the Maf sensor fails it goes into SD mode which therefore reads off of the Map sensor...
Old 06-05-2006, 12:13 PM
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highjackers!!!!



help what should i do

run a turck MAF and get a 3 bar map??

where can i get the 3 bar map??
Old 06-05-2006, 12:23 PM
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You can get a 3 bar map from a typhoon or syclone... You can get better throttle respnse from a SD tune but if your temps change a lot where you live then I would tune with a maf...
Old 06-05-2006, 04:38 PM
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Originally Posted by 98turbls1
You can get a 3 bar map from a typhoon or syclone... You can get better throttle respnse from a SD tune but if your temps change a lot where you live then I would tune with a maf...

awsome!!!

anyone have apart number and is it a direct plug and go or do you need a harness adapter or something??

yeah temsp change alot

so should i stay with my 99 ls1 maf or get one from a truck..
Old 06-05-2006, 04:54 PM
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read the turbo FAQ biotch Its the last post
Old 06-05-2006, 05:18 PM
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He's the uber moderator...COUNTRY BOY...you tell em, read those FAQ's dammit!

J
Old 06-06-2006, 06:34 AM
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Hmm I thought 1bar is 15psi as I have 1bar springs in my tial gate in my 97 talon and that is 15psi roughly. So would have thought 2bar would be like 30 and 3 bar 45.

I was thinking speed density no maf in my 99 ta.Might stick with maf in my 97 talon not sure yet there either.I can't see speed density cars running that bad buddy has 93 trans am with paxton blower and its speed density stock setup.It runs fine all the time.
Old 06-06-2006, 06:38 AM
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Originally Posted by MY99TAWS6
Hmm I thought 1bar is 15psi as I have 1bar springs in my tial gate in my 97 talon and that is 15psi roughly. So would have thought 2bar would be like 30 and 3 bar 45.

I was thinking speed density no maf in my 99 ta.Might stick with maf in my 97 talon not sure yet there either.I can't see speed density cars running that bad buddy has 93 trans am with paxton blower and its speed density stock setup.It runs fine all the time.
youre probably right... Im just getting used to the bar stuffs. Why cant people just stick to PSI?
Old 06-06-2006, 07:05 AM
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Yeah bar stuff is confusing. psi is simpler. and 1 bar is not exactly 15psi its close though.Thats my minimum boost on my tial gate. Max is supposed to be think around 22 or so then you up the springs to get higher.
Old 06-06-2006, 07:31 AM
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In maps sensors, 1 bar gets you 14.7 psi that is atmospheric pressure....that's why a 1 bar map doesn't read boost pressure as that is pressure over atmospheric. So a 2 bar will read 14.7psi of boost and a 3 bar will read 29-30psi, etc. You have to subtract the first 14.7 psi for atmospheric pressure.
Old 06-06-2006, 08:10 AM
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Isn't there some kind of sensor to measure air intake temperature, or is that part of the MAF? I'm a little confused why the MAP only setup will get problems when the weather changes. I know changes in air temperature change air density, but I thought the MAP system had that taken care of?!


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