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Exhaust in. A/F seem right?

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Old 08-07-2009, 02:25 AM
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explict
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Default Exhaust in. A/F seem right?

So I've been working on my car for the last week. Found out I got the wrong K-member, had to order a new one...Got it figured out though..


So I did manage to get my exhaust in. BBK Long Tube headers, MAC Prochamber and MAC Axlebacks. This system is pretty custom, it is not meant to go together at all. I removed the rear 02 sensors, I've been told 100 times this is not a big deal.

I also got my AEM wideband in.
My car idles around 16:1 and at wide open throttle its 11.3-11.7, I seen it drop to 10.9 once for a split second. I am somewhat new to this air-fuel gauge. Do these ratios seem right to you guys?

I've been told I could get away without tuning my car after the headers, but I want to get one anyways.
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Old 08-09-2009, 11:33 PM
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Simon1
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DOn't even worry about looking at your wideband during idle. It will bounce around and make you dizzy. Your numbers under load look great.

You may not have to get it tuned, but you have access to a dyno and a tuner, why not?If you AF stays the same and you don't notice the car driving differently in a bad way, i wouldn't worry about it.
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Old 08-09-2009, 11:51 PM
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Mudflap
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The ratios at WOT look good. I'd go ahead and get the tune anyway personally ...
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Old 08-10-2009, 10:43 AM
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Diabolical!
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At idle I bounce between 15:1 and 16:1 (usually about 15.3). At wide open throttle, I level at around 11.8:1. You're fine.
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