Stock Greddy AFRs - Page 2 - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to   Members

Prefabbed Turbo Kits A place to discuss prefabricated turbo kits on the market
Sponsored by:
Sponsored by:

LinkBack Thread Tools
Old 01-29-2009, 10:23 PM   #21
iTrader: (11)
sixshooter's Avatar
Join Date: Nov 2008
Location: Tampa, Florida
Posts: 15,684
Total Cats: 1,562

Originally Posted by chickchaser View Post
Hi sixshooter, english is my 4th language, that's why it must "sound" strange thx for the "respectful" answer, and sorry as I haven't used enough the search function... Thx for the other answers too. Ah, and i'm from Andorra, between France and Spain.

I know Andorra. I understand that they have been having hard times economically there. Is that why you left?
sixshooter is offline   Reply With Quote
Old 01-31-2009, 02:20 PM   #22
Thread Starter
Join Date: Jan 2009
Location: Worcestershire, England, UK
Posts: 26
Total Cats: 0

Back on topic, and I've made some progress.

I canceled my order of a fuel pump as the shop only informed me after my order that it was going to take 3 weeks to arrive... I've got another shop lined up but I haven't bought one yet.

I changed my fuel filter, it seemed to be fueling a little better, but only very slightly.

The big news is that after reading into o2 clamps, I had an idea. I'm running a lc-1 wideband controller, and it has a simulated narrow band output. So I've set the narrow band output for 1v at 11.7 afr and 0.1v at 12.7 afr. I've installed a small double throw pressure switch so that when below 0.5psi boost the ecu sees the original o2 sensor reading, where 0.5v is 14.7, and above 0.5psi boost it sees the simulated o2 sensor reading, where 0.5v is 12.5.

It works great, as I build pressure in closed loop it takes about 1/2 to 3/4 of a second to drop from 14.7 to 12.5. And it holds a good steady 12.5. Unfortunately as I build more than an indicated 3/4 psi it starts to lean out, so I better get on and re-order a fuel pump!

Fingers crossed I'll have a sensibly fueling car soon!
Steve-A is offline   Reply With Quote

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 59 12-15-2017 09:00 PM
WTB MP62 (Hotside) (NB2) Rick02R WTB 3 01-03-2016 08:18 PM
Expected intake temps on the track? tazswing Race Prep 20 10-03-2015 12:04 PM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
why is my car running like pewp? (tune/datalog) itsMikey MSPNP 3 09-28-2015 07:40 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 09:41 AM.