Mazda Rotary Club

Cars by Model Type => 3rd generation RX-7's => Topic started by: DR SCHNITZEL on August 31, 2008, 11:33:01 AM

Title: Decat pipe question (what is this?)
Post by: DR SCHNITZEL on August 31, 2008, 11:33:01 AM
Hi again.
I took my exhaust off as i need to get a sheared thread drilled out. I stumbled accross this which has been welded into my pipe but goes nowhere.
 
What is it? egt? Its not attached to anything,
Title: Decat pipe question (what is this?)
Post by: shaunwil on August 31, 2008, 12:14:29 PM
More likely was a wideband or narrowband that has become a bung.

I think EGT uses a smaller thread. 1/8in NPT and wide band uses a M18x1.5mm

Shaun
Title: Decat pipe question (what is this?)
Post by: dthebuk on August 31, 2008, 12:14:50 PM
temp sensor?
 
just a guess, i know nothing on the subject
Title: Decat pipe question (what is this?)
Post by: DR SCHNITZEL on August 31, 2008, 01:05:41 PM
this is in the centre of the decat pipe, i thought that was too far away for egt.
is a wideband an air fuel ratio guage?
Title: Decat pipe question (what is this?)
Post by: DR SCHNITZEL on August 31, 2008, 01:07:17 PM
also whats a narrowband?
Title: Decat pipe question (what is this?)
Post by: shaunwil on August 31, 2008, 01:55:17 PM
Wideband is the ones that measure the AFR across the whole range from rich to lean.

Narrow band are what most cars come with as standard and only give a true reading for AFR of around 14. These are much cheaper to manufacture and only the areas that a standard ecu will use are accurate.

Shaun
Title: Decat pipe question (what is this?)
Post by: Jono FD3 on August 31, 2008, 03:36:14 PM
defo not a egt sensor as they normaly only have a single wire and this has 3.