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visable difference?

Old Feb 24, 2009 | 11:54 PM
  #1  
ericjon262's Avatar
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From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
visable difference?

is there any visable difference between a speed density TPI and a MAF TPI on the manifold, runners, and plenem itself?
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Old Feb 25, 2009 | 11:04 AM
  #2  
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From: La Grange Park, IL
Car: 1987 Iroc Z28/ 1982 Z28
Engine: 355 TPI IP/ 305 CFI
Transmission: T-56/ 300C
Axle/Gears: 3.42 Open/ 3.73 Posi
Re: visable difference?

yes

Last edited by Chevy8588; Feb 25, 2009 at 09:59 PM.
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Old Feb 25, 2009 | 01:00 PM
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Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: visable difference?

Yes. An extra vacuum port on the plenum for the MAP sensor.
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Old Feb 25, 2009 | 02:05 PM
  #4  
ericjon262's Avatar
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From: South Carolina
Car: 85 2M6, 87 'Bird 88 'burb
Engine: LX9, LG4, L05
Transmission: F23, 700r4, 700R4
Axle/Gears: 3.63, 2.73, 4.10
Re: visable difference?

Originally Posted by Viprklr
Yes. An extra vacuum port on the plenum for the MAP sensor.


thanks for the help, I picked up a stock LB9 intake and I'm trying to find out whether it's map or maf.

where would this port be located?
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Old Feb 25, 2009 | 02:26 PM
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From: N. Illinois
Car: 92 GTA/ 00 TA
Engine: 383/350
Transmission: 700R4/T-56
Re: visable difference?

Right next to your fuel pressure regulator vacuum and hvac fittings.
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