Home  |  Forums  |  914 Info  |  Blogs
 
914World.com - The fastest growing online 914 community!
 
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG. This site is not affiliated with Porsche in any way.
Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners.
 

Welcome Guest ( Log In | Register )

> Wideband AFR gauge and sensor?
TRP
post Feb 5 2026, 08:42 PM
Post #1


Member
**

Group: Members
Posts: 362
Joined: 2-September 23
From: Morgan Hill, CA
Member No.: 27,559
Region Association: None



Hello,

As I waiit for Ken to finish building my 2056 I want to keep moving on other projects. As I mentioned before, I am keeping the LJet, running 2.0 heads, 2.0 intake runners, the flexible couplers from 914Werke, and the larger bus throttle body. I have read a few threads on this conversion/ upgrade and understand it's straightforward, but I may need to verify the AFR.

Should I buy a wideband gauge and sensor? Or is this as easy as "adjusting some big wheel one click"?

If I should get a wideband setup, which one do you all recommend?

Thanks in advance.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
 
Reply to this topicStart new topic
Replies
rfinegan
post Feb 6 2026, 06:46 AM
Post #2


Senior Member
***

Group: Members
Posts: 1,199
Joined: 8-February 13
From: NC
Member No.: 15,499
Region Association: MidAtlantic Region



Experts say.....Mount the CHT thermocouple under the #3 spark plug. NOT the stock location that is drilled/taped. Most heads will need a little relief about the spark plug hole for the sensor to sit flat and not turn and twist during install/removal..lots of pic on this in world search
User is online!Profile CardPM
Go to the top of the page
+Quote Post
Olympic 914
post May 18 2026, 04:36 PM
Post #3



***

Group: Members
Posts: 1,776
Joined: 7-July 11
From: Pittsburgh PA
Member No.: 13,287
Region Association: North East States



QUOTE(rfinegan @ Feb 6 2026, 08:46 AM) *

Experts say.....Mount the CHT thermocouple under the #3 spark plug. NOT the stock location that is drilled/taped. Most heads will need a little relief about the spark plug hole for the sensor to sit flat and not turn and twist during install/removal..lots of pic on this in world search


A little off the subject,

But. Having the CHT thermocouple under the plug is a PITA . Mine is all twisted up from changing the plugs.

So contrary to what the "Experts" say, next time I am putting the thermocouple under the Djet CHT sensor.

No one will really convince me that there will be a large temp difference between the two locations, they are only inches apart.
User is offlineProfile CardPM
Go to the top of the page
+Quote Post
emerygt350
post May 18 2026, 04:54 PM
Post #4


Advanced Member
****

Group: Members
Posts: 3,560
Joined: 20-July 21
From: Upstate, NY
Member No.: 25,740
Region Association: North East States



QUOTE(Olympic 914 @ May 18 2026, 04:36 PM) *

QUOTE(rfinegan @ Feb 6 2026, 08:46 AM) *

Experts say.....Mount the CHT thermocouple under the #3 spark plug. NOT the stock location that is drilled/taped. Most heads will need a little relief about the spark plug hole for the sensor to sit flat and not turn and twist during install/removal..lots of pic on this in world search


A little off the subject,

But. Having the CHT thermocouple under the plug is a PITA . Mine is all twisted up from changing the plugs.

So contrary to what the "Experts" say, next time I am putting the thermocouple under the Djet CHT sensor.

No one will really convince me that there will be a large temp difference between the two locations, they are only inches apart.

It's not the temp difference so much as the time it takes for the temp at that gauge to read what's happening. For determining a mix that is good, for keeping track of dangerous conditions you want to be under the plug. I am just very careful with mine and rarely pull the 3 plug.
User is online!Profile CardPM
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
3 User(s) are reading this topic (2 Guests and 0 Anonymous Users)
1 Members: Chad911sc

 



- Lo-Fi Version Time is now: 18th May 2026 - 06:35 PM
...