I need caps for the a.i.r. tubes off the manifolds.
03-05-2007, 04:00 PM
#51
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Car: 1985 Berlinetta
Engine: Megasquirted TPI
Transmission: Transgo 700R4
Axle/Gears: 3.42
I have to be doing the same thing. I just bought a tpi to swap into my v6 car, and i'm using the megasquirt ECM. The air tubes are mangled, so I might as well remove them.
03-05-2007, 05:07 PM
#52
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Car: 1989 GTA
Engine: SuperRam 350
Transmission: Pro Built S/S TH700R4
Axle/Gears: 3.27
WRONG! the AIR tube is there to put more oxygen into the catalytic converter so it can convert the oxides of nitrogen, carbon monoxide, and hydrocarbons into CO2 and H2O more effectively. It is an old design. Modern 3 way catalytic converters dont need AIR. You can buy a modern catalytic converter to solve this. I dont run AIR with my headers beacuse i bought a new high flow 3 way cat.
I was under that impression too. Yet people on this board who've logged their cars say that it actually spends a lot of time pumping air to the manifolds. More than we'd think.
03-12-2007, 06:48 AM
#53
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Car: 91 Z28
Engine: 305 TPI
Transmission: TH700-R4
Axle/Gears: 3.73
yea catilitic converters have made drastic improvements over the years. look at this one i bought at advance auto and its the cheap economy cat. the best part is it doesnt need the air tubes 
ah clean air at last! you can just smell my exhaust all day long.
ah clean air at last! you can just smell my exhaust all day long.
03-12-2007, 07:11 AM
#54
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
My Catco 9118 has an AIR tube on it and it's about as high flow as it gets. I do agree that cats have gotten better over time though.
I was under that impression too. Yet people on this board who've logged their cars say that it actually spends a lot of time pumping air to the manifolds. More than we'd think.
I was under that impression too. Yet people on this board who've logged their cars say that it actually spends a lot of time pumping air to the manifolds. More than we'd think.
Who says that? (about 02 divert to the manifolds) thats not what i've seen.
-- Joe
03-14-2007, 12:25 AM
#55
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Car: 1989 GTA
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Axle/Gears: 3.27
https://www.thirdgen.org/forums/exha...run-tpi-3.html
Post # 148
TRAXION 12-24-2003 -- "I have tons of datalogs with AIR being injected during normal driving. This is AIR being injected at the manifolds ... which DOES affect the O2 sensor. Furthermore, this happens A LOT. This is not just a simple inject at the manifolds every now and then. It happens a lot. On the other hand, I think your statement is true for AIR being injected at the Catalytic Converter. None of my scans show AIR being injected at the converter during normal driving after warmup."
Post # 148
TRAXION 12-24-2003 -- "I have tons of datalogs with AIR being injected during normal driving. This is AIR being injected at the manifolds ... which DOES affect the O2 sensor. Furthermore, this happens A LOT. This is not just a simple inject at the manifolds every now and then. It happens a lot. On the other hand, I think your statement is true for AIR being injected at the Catalytic Converter. None of my scans show AIR being injected at the converter during normal driving after warmup."
03-14-2007, 05:49 AM
#56
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Car: '88 Formula, '94 Corvette, '95 Bird
Engine: LC9, 355" LT1, LT1
Transmission: T5, Zf6, 4L60E
Axle/Gears: 3.42, Dana44 3.45, 3.23
https://www.thirdgen.org/forums/exha...run-tpi-3.html
Post # 148
TRAXION 12-24-2003 -- "I have tons of datalogs with AIR being injected during normal driving. This is AIR being injected at the manifolds ... which DOES affect the O2 sensor. Furthermore, this happens A LOT. This is not just a simple inject at the manifolds every now and then. It happens a lot. On the other hand, I think your statement is true for AIR being injected at the Catalytic Converter. None of my scans show AIR being injected at the converter during normal driving after warmup."
Post # 148
TRAXION 12-24-2003 -- "I have tons of datalogs with AIR being injected during normal driving. This is AIR being injected at the manifolds ... which DOES affect the O2 sensor. Furthermore, this happens A LOT. This is not just a simple inject at the manifolds every now and then. It happens a lot. On the other hand, I think your statement is true for AIR being injected at the Catalytic Converter. None of my scans show AIR being injected at the converter during normal driving after warmup."
-- Joe
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