272/272 + Mivec = smooth Idle??
Jun 1, 2007, 10:34 AM
#1
272/272 + Mivec = smooth Idle??
Has anyone played with Mivec at idle to calm down aggressive cam? I have Cosworth 272/272 in my Evo 9. I tried to increase overlap and the car just idle worse. I was thinking about retarding timing and increasing overlapping?? Has anyone else had better results?? The idea is to get rid of the CE light..
Jun 1, 2007, 02:11 PM
#2
Account Disabled
iTrader: (1)
Join Date: Jun 2006
Location: Taftville, CT
Posts: 472
Likes: 0
Received 0 Likes
on
0 Posts
I have the GSC 280's and my idle is just as smooth as stock with the intake cam set @ 0 from 500-1000rpm. I did advance the timing to 16.2 to see what kind of effect it had, all it did was add more lope to the idle.
Maybe I should try retarding timing?? What RPM are you idle at??
Jun 1, 2007, 03:01 PM
#4
Evolved Member
iTrader: (38)
Join Date: Aug 2005
Location: NorCal
Posts: 555
Likes: 0
Received 0 Likes
on
0 Posts
I run these with 9* of ignition advance and with 0's in the idle cells on the VVT map and it's pretty smooth (just a tiny bit lopier than stock). No trouble codes.
If you do this and still experience a very rough idle, you may have injector scaling/latency issues to resolve. Check your "O2 Feedback" trim at idle as a start.
If you do this and still experience a very rough idle, you may have injector scaling/latency issues to resolve. Check your "O2 Feedback" trim at idle as a start.
Trending Topics
Thread
Thread Starter
Forum
Replies
Last Post
uneekvisions
For Sale/WTB - Engine / Drivetrain / Power
2
Jul 26, 2017 10:26 AM
Fourdoor
Evo X Engine Management / Tuning Forums
16
Jun 3, 2010 05:11 AM
