Want to install Air-Fuel Gauge |
|
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. |
|
Want to install Air-Fuel Gauge |
michael7810 |
Dec 19 2011, 09:22 PM
Post
#1
|
Senior Member Group: Members Posts: 1,082 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region |
I have to get larger chokes and re-jet my 1911cc/dual IDF40s and was thinking of installing a wideband air-fuel gauge to help with tuning. I've looked at a few digital gauges for around $200 that include the gauge, O2 sensor, bung, wiring, etc. Wondering if you guys have any sourcing recommendations and install tips. It looks simple from what I've read. Thanks for any help you can provide.
|
michael7810 |
Jan 21 2012, 11:26 AM
Post
#2
|
Senior Member Group: Members Posts: 1,082 Joined: 6-June 11 From: Scottsdale, AZ Member No.: 13,164 Region Association: Southwest Region |
I found #1 idle jet was plugged so I cleaned that out and readjusted the idle mixtures/sync. AF at 900 rpm idle is 12.5. WOT in 4th gear starts at 11.0 at 2000 rpm (maybe influenced by accel pump), at 3000 its 12.5, 4000 is 12.5-13, 5000 to redline is 13.5-14.0. Steady state 3rd gear I can see the AF jump from 12.5 to 13.5-14.0 when I ease it up from 3000 to 3200 rpm so I think that it when the mains kick in. It runs strong, only issue now is slight hesitation off idle. Next time I'll disconnect the accel pump. Feeling much better now with the way it's running.
|
mrbubblehead |
Jan 21 2012, 12:12 PM
Post
#3
|
Twodollardoug Group: Members Posts: 1,155 Joined: 17-December 10 From: calimesa ca. Member No.: 12,492 Region Association: Southern California |
I found #1 idle jet was plugged so I cleaned that out and readjusted the idle mixtures/sync. AF at 900 rpm idle is 12.5. WOT in 4th gear starts at 11.0 at 2000 rpm (maybe influenced by accel pump), at 3000 its 12.5, 4000 is 12.5-13, 5000 to redline is 13.5-14.0. Steady state 3rd gear I can see the AF jump from 12.5 to 13.5-14.0 when I ease it up from 3000 to 3200 rpm so I think that it when the mains kick in. It runs strong, only issue now is slight hesitation off idle. Next time I'll disconnect the accel pump. Feeling much better now with the way it's running. you deffinatly need to disable the squirters. its throwing off your readings....try again and post back.... your getting close. p.s. im using cb performance idle jet doctors and havnt had a plugged jet since.....i also run uni foam prefilters on my carbs. i still have that offroad mentality (IMG:style_emoticons/default/confused24.gif) . |
Lo-Fi Version | Time is now: 27th September 2024 - 12:30 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |