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Any need for Oxygen Sensor on catless SC?
Is there any reason to use an OS on a catless 81 SC with SSIs that doesn't have to test for emissions? I thought it helped to control mixture. Now I hear that ROW SCs didn't have them at all.
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John Original owner '81 911SC blackmetallic coupe. Terbatrol, SSI, M+K Gen 4, SC+ cams, A/C delete, console delete, heater backdate, 7 & 8 x 16 Fuchs with polished rims, Turbo tie rods, tensioner update, Rennline engine mount bar, Mainely Custom sump plate, new top-end, corner balance. |
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08-01-2006, 11:51 AM
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you need it for enrichment of your fuel dizzy from my understanding and as I said its been a while since I messed with mine until I dumped the setup last summer for the efi. I can remember running for a while not connected and it ran fine. I can look in my book to verify
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Ben 89 944,85.5 944 914-6 2.4s GT tribute. 914-6werkshop.com |
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08-01-2006, 11:54 AM
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Join Date: Aug 2000
Location: a wretched hive of scum and villainy
Posts: 55,652
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You could get by without it, but the engine will run better with it.
Some people say that you will have more throttle response without the sensor but I disagree. The O2 sensor/lambda brain is taken out of the loop as soon as you hit full throttle, where it goes to a defaul setting (which is rich). The only time the O2 sensor works is below full throttle. I have one on my engine and I prefer it. |
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08-01-2006, 11:57 AM
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1981 Porsche 911SC
