Help, Very lean startup cold or not!!!
#1
Newbie
Thread Starter
iTrader: (4)
Join Date: Apr 2010
Location: jordan
Posts: 66
Likes: 0
Received 0 Likes
on
0 Posts
Help, Very lean startup cold or not!!!
Id appreciate some help regarding the weird issue that am facing. Its an Evo 7 with bolt ons and an ECU flash.
The car fires up instantly but idles very lean, as per my AEM, and its takes the car about 2mins to go back to normal AFR levels and stays there. Very lean that it can go up maxing the AEM AFR gauge. This isn't only during cold starts, it does it on warm starts also.
It drives very normally and with good AFRs, sometimes it goes very lean when stopping for a red light and bounce up again.
the car has OEM fuel injectors, OEM spark plugs (less than 500 miles), walbro 255, a DIY COP, and OEM FPR. Those are my ignition/fueling mods.
Again id appreciate any input/solution regarding the matter, thanks.
The car fires up instantly but idles very lean, as per my AEM, and its takes the car about 2mins to go back to normal AFR levels and stays there. Very lean that it can go up maxing the AEM AFR gauge. This isn't only during cold starts, it does it on warm starts also.
It drives very normally and with good AFRs, sometimes it goes very lean when stopping for a red light and bounce up again.
the car has OEM fuel injectors, OEM spark plugs (less than 500 miles), walbro 255, a DIY COP, and OEM FPR. Those are my ignition/fueling mods.
Again id appreciate any input/solution regarding the matter, thanks.
#3
Newbie
Thread Starter
iTrader: (4)
Join Date: Apr 2010
Location: jordan
Posts: 66
Likes: 0
Received 0 Likes
on
0 Posts
Well, i would but i actually could feel the car acting weird during the lean running period indicated by the gauge.
Its like having a very loopy cam setup for a few mins and then its back to normal, normal AFRs.
It does have hks272 cams....
Its like having a very loopy cam setup for a few mins and then its back to normal, normal AFRs.
It does have hks272 cams....
#4
Trending Topics
#9
Boost leaks/high AFRs at startup
During cruise I get 15 afrs, it will not richen up intil 35+ throttle....cleaned MAF also
Thread
Thread Starter
Forum
Replies
Last Post
CDrinkH2O
General Engine Management / Tuning Forum
5
Sep 7, 2013 05:51 PM
EvoVIII_03
EvoM New Member / FAQs / EvoM Rules
3
Dec 18, 2012 08:48 PM