IH8MUD™ Forums - View Single Post - FJ60 1-ton Superduty build

sixty · 03-03-08, 03:23 PM

Its probably in the 10:1 range if I had to guess. there is no black smoke but the hydrocarbons in the exhuast make it hard to breathe in my garage

. The reason it runs so rich is that the compurer thinks it has 55lb injectors & is fueling accordingly. At 19psi the 75lb injectors are more like 95lb. As soon as I start tuning I can lean it out pretty easily. It will have a much more stable idle with the smaller injectors at higher psi since it will atomize better. I may stick with the stock injectors at 35psi to make them 95lbs +/-

Tuning should be fun!

03-03-08, 03:23 PM	#137
sixty IH8MUD Addict Join Date: Sep 2004 Location: Back in Vegas Posts: 570	Its probably in the 10:1 range if I had to guess. there is no black smoke but the hydrocarbons in the exhuast make it hard to breathe in my garage . The reason it runs so rich is that the compurer thinks it has 55lb injectors & is fueling accordingly. At 19psi the 75lb injectors are more like 95lb. As soon as I start tuning I can lean it out pretty easily. It will have a much more stable idle with the smaller injectors at higher psi since it will atomize better. I may stick with the stock injectors at 35psi to make them 95lbs +/- Tuning should be fun!