So I was running 30 lb/hr injectors and the duty cycle was in the high 80's to lower 90's when at WOT and above 5700 rpms. I never really noticed the WBo2 going lean so I didn't worry much about it.
A while back a almost new set of Siemons 60 lb/hr injectors became available for the right price and I jumped on them. Ever since I have had hell getting my tune back to where it ran as good as it did with the 30's. Start up and warm up are rich, if you try to drive before it warms up good it's very rich. AE does not exist for some reason, when I let off any at all it goes rich but all I have to is touch the gas and it's back where it needs to be. I took it to the track a couple weeks ago and when I would stage and stall up it would dump enough fuel to choke it down.
I'm not sure whats going on but I think I'm gonna put my 30's back in.
Bookmarks