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Performance Modifications for the NG900 / Old 9-3 This forum contains PERFORMANCE related Q&A's for the NG900 and 9-3. This may also include suspension.

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Old 04-28-2012, 06:33 PM   #1
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What are your Egt readings?

I recently installed an Autometer ultra-lite egt gauge, and I suspect it might be reading a little high. I have a t5 suite stage 2 tune(17 psi), and a 2.5" downpipe with no cat. The probe is on the front of the collector in the manifold. After the car is warm, it settles to around 950, and on the highway 2600 rpm or so its around 1400, 1500 if Im going up a hill. I can peg it at 1600 after one run.

The probe was used, and has a connection in the harness that I'm certain wasn't there when it was new. If these readings do seem a bit high, then I will replace the probe and see if that helps. Thanks for your input!
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Old 04-30-2012, 06:44 AM   #2
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Any thoughts? I've seen other makes with idle egts around 800 and cruise around 1200. Just trying to compare to other Saabs.
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Old 04-30-2012, 07:26 AM   #3
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Turbos will generate alot more heat. Depending on your A/F ratios and the loads on the engine the temps will vary. 1600 isn't terrible for a turbo car, my spg used to go to 1700-1800 under hard pulls. Have you logged your A/F ratios yet? Or have a way to?
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Old 04-30-2012, 07:33 AM   #4
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I guess I should have mentioned those were turbo cars. The gauge only goes to 1600, so I don't know how much higher its going. I will probably get the 2000 degree version along with a new probe this summer. Negative on the AFR logging, I may this summer because I will be buying a bunch of equipment to tune the carb on my V8 S-10.
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Old 04-30-2012, 08:38 AM   #5
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Yea my gauge went up to 2000 or maybe higher. Haven't looked at it in awhile.
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Old 05-01-2012, 11:03 PM   #6
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F or C? You are goo up to ~1200c or ~2200 F for brief periods of time. 950C target.
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Old 05-03-2012, 07:06 PM   #7
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Fahrenheit. Hopefully sometime this summer I will have a 2000* gauge and some form of a wideband.
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