Help!! With "fuel cut"
 

:help:Hey there. If anyone could give me some advice that'd be great. I've had my car for 5 years now and just recently did the 550cc injector and lexus afm upgrade. Here is the symptoms I'm having: Car runs a bit too rich. It smokes black real bad at the initial crack of the throttle then clears out. I feel like I've actually lost power since the upgrade and I keep experiencing "fuel cut" here and there when I down shift. It's only when i put a big sudden load on the engine. It doesn't happen through smooth acceleration. Can anyone give me advice on tuning the air fuel? Or maybe where to time it? I haven't touched the timing and I'm wondering if I need to. I've given the computer PLENTY of time to adjust also.. Thank you!

Anyone had this problem before? I'm trying to find anything on the web that will help but I'm striking out

I don't have this problem because I have the non turbo model, I don't think it comes with the fuel cut device. As for the black smoke it could be rich but are you losing any oil? I know with my older Honda a while back the rings were gone and it pored black smoke out. Check compression on your cylinders first, black smoke can mean a mess of troubles. If you don't have a compression gauge they are pretty cheep and they can tell a lot about your internals. It is always good to have one. Wait around for a experienced turbo guy for the fuel cut question. I hope this helps a little bit.

Hey thanks man. The black smoke I have is definitely just unburned fuel. It's running very rich. I don't know if it's a problem with the new AFM or what? That's why I was considering advancing the timing a bit but I don't know if I should. And also I did a compression test not too long ago and everything is peachy. So yeah I'm just waiting for that good turbo guy to point me in some direction. I'm fully capable I just don't know where to start lol. thanks again

you have to check engine codes for starters

pull the codes we know you'll have a #34 but what other codes are you getting ?

Ok so I'm getting code 32 which is HAC sensor in my year. Code 34 you already knew that. And code 42 which confuses me because my book says speed sensor? And I don't have a speed sensor. But my car was a non turbo model I converted to turbo years ago.