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Join Date: Aug 2010
Location: Anthem, AZ
Posts: 875
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should I remove smog pump?

I am having the engine dropped to take care of some transmission leaks and engine oil leaks and I am looking for thoughts on removing the smog equipment. I don't have to do emissions anymore. besides less weight are there any other noticeable differences?
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84 930 Slant
15 Sonata 2.0T
08 Ram 1500
15 Ram Eco Diesel
Old 06-18-2011, 03:37 PM
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Like you said, you'll remove weight. You'll also remove several pipes that could rust and leak air, screwing up your AFR. Also, having the air injected into your exhaust does influence your AFR readings, so if you are using a wide band O2 sensor to tune your engin, it will be a bit off.

Running the pump also takes power, reducing power to the wheels a tiny bit - though others have studies showing the pumped air actually helps keep the turbo spinning and can help add HP when working...so you have to consider this, too.
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Emery

1988 930 coupe - Silver Metallic
stock 3.3L w/GT35R, B&B Headers, RarlyL8 muffler, B&B intercooler, Tial wastegate, Electromotive tecGT based phased sequential EFI & ignition, Wevo shifter
Old 06-18-2011, 04:07 PM
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thats good info thanks
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84 930 Slant
15 Sonata 2.0T
08 Ram 1500
15 Ram Eco Diesel
Old 06-18-2011, 08:56 PM
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