89_740Turbo
New member
- Joined
- Apr 10, 2018
- Location
- Central New Jersey
Just about finished a build.
- fresh b230ft
- ported 90 manifold
- 16t
- 3in DP
- Yoshifab catch can
- new green top injectors
- Sbabbs chipped lh2.2 ecu
- AW71 accumulator mod
Wanted to install the NPR intercooler and street cam but I want to fix this issue first
When the car is cold started, it's reads 14.7 on the wideband and then creeps up and eventually just runs rich. This only happens when idling. Any ideas why? While cruising it's fine at 14.1- 14.8 and never gives me a problem. Under boost it may briefly run lean at 10.6 for a split second then flattens out at 11.2 and stays around there.
Why is it only running rich at idle? I can't figure it out. From all of the countless threads I've read before, this shouldn't be a problem with a simple turbo swap of this mild caliber. Many have done it before. Am I missing something?
- fresh b230ft
- ported 90 manifold
- 16t
- 3in DP
- Yoshifab catch can
- new green top injectors
- Sbabbs chipped lh2.2 ecu
- AW71 accumulator mod
Wanted to install the NPR intercooler and street cam but I want to fix this issue first
When the car is cold started, it's reads 14.7 on the wideband and then creeps up and eventually just runs rich. This only happens when idling. Any ideas why? While cruising it's fine at 14.1- 14.8 and never gives me a problem. Under boost it may briefly run lean at 10.6 for a split second then flattens out at 11.2 and stays around there.
Why is it only running rich at idle? I can't figure it out. From all of the countless threads I've read before, this shouldn't be a problem with a simple turbo swap of this mild caliber. Many have done it before. Am I missing something?