AFR goes lean when turbo finished spooling
Thread Starter
Evolving Member
Joined: Aug 2009
Posts: 284
Likes: 21
From: Hokkaido, Japan
AFR goes lean when turbo finished spooling
Hi,
I'm just wondering how and why the AFR goes so lean like the pic below.
Please look at around 3500-4000 rpm. Every time when the turbo has just finished spooling, AFR goes lean to around 12.5 - 13.5.
I have a 2.2L motor with stock turbo with a 3-port.
What does cause this? Any inputs are welcome. Thank you.
I'm just wondering how and why the AFR goes so lean like the pic below.
Please look at around 3500-4000 rpm. Every time when the turbo has just finished spooling, AFR goes lean to around 12.5 - 13.5.
I have a 2.2L motor with stock turbo with a 3-port.
What does cause this? Any inputs are welcome. Thank you.
Last edited by crimson red; Jul 7, 2013 at 04:13 AM.
Could be a few things, but we'd have to see your rom to let you know what to change to get rid of the lean spot. You tuning it yourself?
~Chris@MooreAutomotive
Tuner/Master Techncian
~Chris@MooreAutomotive
Tuner/Master Techncian
Thread Starter
Evolving Member
Joined: Aug 2009
Posts: 284
Likes: 21
From: Hokkaido, Japan
Thread
Thread Starter
Forum
Replies
Last Post
07EvoIX
General Engine Management / Tuning Forum
3
Oct 28, 2012 12:49 PM
crimson red
Evo X Engine Management / Tuning Forums
14
Apr 29, 2011 01:36 AM