Flyin' Miata Downpipe O2 Bungs - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

DIY Turbo Discussion greddy on a 1.8? homebrew kit?

LinkBack Thread Tools
Old 07-31-2015, 02:57 PM   #1
Junior Member
Thread Starter
Join Date: Jul 2014
Location: Kensington, MD
Posts: 324
Total Cats: -26
Default Flyin' Miata Downpipe O2 Bungs

Hi all. Done some investigating/reading, but haven't found explicit confirmation.

The FM downpipe has two O2 sensor bungs. The FM turbo instructions indicate that the installer is to put the OEM/narrowband O2 sensor in the upper bung, and the wideband O2 sensor in the lower bung. I'm assuming this is done because the Voodoo or Hydra want it.

If a person is using Megasquirt for engine management, would I be correct in my assumption that the WBO2 still goes in the lower bung, and the upper one should just be plugged?

huesmann is offline   Reply With Quote
Old 07-31-2015, 03:00 PM   #2
Senior Member
iTrader: (1)
Join Date: Apr 2011
Location: Columbia, SC
Posts: 1,342
Total Cats: 78

Schuyler is offline   Reply With Quote
Old 07-31-2015, 03:00 PM   #3
Boost Pope
iTrader: (8)
Joe Perez's Avatar
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,328
Total Cats: 1,926

It doesn't really matter all that much.

The common thinking when dealing with wideband O2 sensors is that they like to be placed a little further downstream than is customary for narrowband sensors, simply because they are somewhat more sensitive to heat. This holds true regardless of the ECU being connected to.
Joe Perez is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Emissions testing sucks balls talusfan General Miata Chat 0 08-26-2008 03:05 PM
FS: T#, Mani, DP, MS, injectors, bike rack mschlang Miata parts for sale/trade 17 07-30-2008 11:47 PM
Intercooled Greddy kit for 1.6 Ben Miata parts for sale/trade 18 05-26-2007 12:13 AM
1.8l custom t3 turbo kit t3shadow Miata parts for sale/trade 4 02-14-2007 03:03 AM

Thread Tools

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off

All times are GMT -4. The time now is 07:43 PM.