Originally Posted by SECS
Confused !!
You say AFR 13.5 - I understand this.
But what does
9 to 10 mean ?
I reckon your injectors are not suitable for what you want them to do.
They may be good for power but idle will be a problem !
In this situation, you must either ...
1) accept a rich lumpy idle
2) lower the fuel pressure (which will reduce top end fuelling too !)
3) use a higher idle speed to keep injectors in usable working range.
Are you using grey injectors by any chance ?
afr of 9 rising to 10 when i lower inj time from 3ms to 2.50ms
inj are msd 500 or 525cc's , tried 2bar fp , i can live with a luppy rich idle if its not detrimental to the engine, i.e flooding the cylinder with so much fuel it reduces the lubrication on the bores of the cylinder ? if that makes sense !