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Which intake tube is better? (pics)

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Old Dec 14, 2021 | 11:10 PM
  #1  
Gunstar's Avatar
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From: Cleveland, OH
Car: 1991 Pontiac Firebird Formula
Engine: ZZ4 crate engine
Which intake tube is better? (pics)

See images below. I have a TPI, and I have some extra parts. Noticed the aluminum splitter on one of my intake tubes. Is this just restrictive, or does it have any benefits? I know I could easily run my own tubing but I'm going to stay with stock for the time being. Just curious if anyone had any input on this.




Which
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Old Dec 15, 2021 | 01:00 AM
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Car: '89 Firebird
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Re: Which intake tube is better? (pics)

Is that the end of the tube where the MAF sensor attaches? Or were those intended for speed density cars only?
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Old Dec 15, 2021 | 01:16 AM
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From: Cleveland, OH
Car: 1991 Pontiac Firebird Formula
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Re: Which intake tube is better? (pics)

That is the end that the air filter attaches to. I have a 91, so it's a speed density.

Originally Posted by QwkTrip
Is that the end of the tube where the MAF sensor attaches? Or were those intended for speed density cars only?
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Old Dec 15, 2021 | 09:01 AM
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From: Milwaukee
Car: 92 Firebird, 77 Trans Am SE, 86 Z28
Engine: 5.7 HSR, T/A 6.6, empty
Transmission: T-5, TH350, T-5
Axle/Gears: 3.08 posi, 3.23 posi, 3.23
Re: Which intake tube is better? (pics)

I'm not schooled in airflow characteristics so my opinion means absolutely nothing on if it's a restriction. What I am wondering is if that's a factory thing or an experiment by an enthusiast. Seems too costly a piece for GM. I would think it intends on the air cleaner lid to be inline with the aluminum plate.
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Old Dec 20, 2021 | 04:24 PM
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1989karr's Avatar
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Car: 89' Firebird / 87' Formula
Engine: 3.4 / 5.0
Transmission: 700-R4
Axle/Gears: 3.42 / 3.42
Re: Which intake tube is better? (pics)

I have a SLP intake for my 87. the rubber tube that attaches to the Air box has a piece like that and another in the elbow after the MAF.

I think it helps the air travel more smoothly.


Could be the one you have was modified to have that or was part of a SLP intake?
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Old Dec 20, 2021 | 04:52 PM
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Re: Which intake tube is better? (pics)

I also thought I read somewhere that it was an SLP thing to smooth out the airflow. Regardless, I doubt there will be a seat of the pants difference between the two.
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