02 bung into SSI exchangers?, Which pipe is best. Does it matter? |
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02 bung into SSI exchangers?, Which pipe is best. Does it matter? |
VaccaRabite |
Oct 27 2020, 07:15 AM
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#1
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En Garde! Group: Admin Posts: 13,456 Joined: 15-December 03 From: Dallastown, PA Member No.: 1,435 Region Association: MidAtlantic Region |
I'm doing some remote tuning through PMB for my injected 2056. The tune is close and I've been driving it but there are improvements that could be made now that I have had about a year and change since my last tuning session.
Eric suggested I move my O2 bung from the muffler (where I knew the location was not ideal but it got to sample all 4 cylinders) to one of the exchanger pipes (much better/hotter location, but only get to sample one cylinder.) Tapping into the Cylinder 1/2 bank would be easiest, and I was thinking of going into Cyl 1 since the pipe is shorter and maybe a little hotter. So now the question is what cylinder is the one I want to TIG weld the bung into. I don't track EGT so I don't really know if one pipe is hotter then another. And I want to eventually get heat back in my car so I can't go to headers which would allow me to sample all the cylinders before the muffler. Thanks! Zach @Eric_Shea |
BeatNavy |
Oct 27 2020, 07:22 AM
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#2
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Certified Professional Scapegoat Group: Members Posts: 2,924 Joined: 26-February 14 From: Easton, MD Member No.: 17,042 Region Association: MidAtlantic Region |
Zach, can you comment on what Eric told you or why you don't think your location is ideal?
I've got a Microsquirt setup with Chris Foley's EVO II stainless steel muffler. He pre-welds a bung right into the muffler. I seemingly had no issues with it when I was running D-Jet but for some reason when I switched to Microsquirt (and a different O2 sensor) my idle AFR readings were completely useless for tuning purposes. Worse than useless. Kept pointing me to super lean when I was super rich. At throttle it seems ok, and I know tracking type 4 idle AFR can be challenging (so says Jake). Sorry, don't have an answer to your question, but I'm curious. |
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