 O2 readings at idle |
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| yeahmag |
 Nov 29 2010, 08:27 PM
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#1
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Advanced Member  Group: Members Posts: 2,422 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California 
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Just an idiot check here... I got Evan's old header on the car and all fixed up. It now clears my tuna can, has leak free collector/slip joints, mounts to the stock trans location, and has an O2 bung welded just past the collector.
Now my question is simple. I wanted to idiot check that I should be gunning for 12.5:1 or so at all points; idle, transition, at WOT. I leaned out on idle to the point that I think I'll need a 65 idle jet on my 40 Dell's (34mm vent). I took an extra full turn on the idle volume screws to get it around 13.5:1. I must say though I picked up more than a few HP with it. It's a 4-1 in somewhat of a KH design with a Phase9 style muffler with an extra 360 degree SS loop between the collector and muffler to add some length to the secondaries. Pictures coming... |
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| yeahmag |
Dec 1 2010, 03:37 PM
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#2
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Advanced Member Group: Members Posts: 2,422 Joined: 18-April 05 From: Pasadena, CA Member No.: 3,946 Region Association: Southern California
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Hmm... I thought I'd be on the idles at part throttle. I'm talking less than 1/4, but more than "cracked". Opening the mains is easy as I have a ton of them...
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Posts in this topic
yeahmag O2 readings at idle Nov 29 2010, 08:27 PM
Mark Henry 12.5 to 13.5 is fine.
Idle has no load so it can ... Nov 29 2010, 09:23 PM yeahmag Put in a 65 idle and it seems OK if not a bit sogg... Dec 1 2010, 12:00 PM brant Idle really doesn't matter
it will hurt your e... Dec 1 2010, 01:14 PM yeahmag Sounds like I should go back to the 62 idle then..... Dec 1 2010, 01:20 PM brant I'm not expert.. but in my opinion that would... Dec 1 2010, 01:53 PM yeahmag I ended up with a 62 idle jet with my stock HE... Dec 1 2010, 02:01 PM Mark Henry You need to open up the main jets.
WOT and going ... Dec 1 2010, 02:50 PM
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