Question about raising base fuel pressure - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


General Miata Chat A place to talk about anything Miata

Reply
 
 
 
LinkBack Thread Tools
Old 06-05-2012, 10:52 PM   #1
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default Question about raising base fuel pressure

My base fuel pressure (0psi) is currently 45psi. I'm running Denso NB-style injectors (DW 800cc) that love 60+ psi and a K-Tuned AFPR with gauge. When I went to raise the pressure to 60, the car leaned out from 13.5:1 AFR to 19:1+ and stalled as I approached 60 psi.

Why does it go lean at idle when I raise the fuel pressure?
Bryce is offline   Reply With Quote
Old 06-06-2012, 01:44 AM   #2
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

Forgot to mention, I'm running an NA return-style system.
Bryce is offline   Reply With Quote
Old 06-06-2012, 09:29 AM   #3
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,846
Total Cats: 1,787
Default

doesnt make sense.
Braineack is offline   Reply With Quote
Old 06-06-2012, 09:32 AM   #4
Murderator
iTrader: (76)
 
18psi's Avatar
 
Join Date: Apr 2008
Posts: 36,174
Total Cats: 2,575
Default

Yeah, that.

The only time I saw that happen was with some crappy DSM injectors my buddy had that DID NOT want to run anything higher than 40psi pressure and became very unstable/leaned out as we raised pressure.
18psi is offline   Reply With Quote
Old 06-06-2012, 06:02 PM   #5
Elite Member
Thread Starter
iTrader: (24)
 
Join Date: Jul 2007
Location: Cypress, TX
Posts: 3,778
Total Cats: 35
Default

I shall take video. this has me perplexed.
Bryce is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 57 07-19-2017 05:11 PM
OTS Bilstein to motorsports ASN conversion stoves Suspension, Brakes, Drivetrain 5 04-21-2016 04:00 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM
Walbro 255lph Fuel Pump $50 lsc224 Miata parts for sale/trade 2 10-01-2015 10:17 AM
Low oil pressure after 1.8 swap and new turbo setup JesseTheNoob DIY Turbo Discussion 15 09-30-2015 03:44 PM


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 07:56 PM.