running lean...

[stokeless]

correct me if i'm wrong...

at idle and cruising speed it is ok to run lean... correct?

my car runs very lean at idle up to untill about 4300rpm and it starts to go alittle rich til redline... i running a TC59 turbo (59mm) with stock fuel except for a aeromotive fuel pressure regulator (36-38psi with no vacumm at idle).

i get full boost at about 2800-3000rpm. this should be fine correct...

 

[Supracentral]

Define: "lean"

You mean leaner than 14.7:1 ?

 

[stokeless]

yes...

 

[IHI-RHC7]

How much leaner?
The turbo has no effect on idle fuel pressure.
Moniter your Vf signal and adjust base pressure such that you read 2.5V when cruising, then all will be well.

 

[jdub]

At idle, 15.5-16.0 is normal. Cruise should be 14.7. Boost should be 11.0-11.5.

Try this...pull your EFI fuse and let the ECU "re-learn" your set-up.

 

[dbsupra90]

sounds like your fuel pump is failing. that is a very dangerous a/f under boost. w/ stock fuel you should have killed every mosquito for 3 blocks under boost, esp 4500rpm+. btw, what are you using to monitor a/f?