Check my live data-scan tool- system too lean?

So idk if this will help diagnose my issue or not. But figured it might show something. Trying to figure this all out and diagnose why I have a lack of power. Truck runs pretty great, just seems like a decent amount of power loss. Had this issue for a while now. Thought it was my cats clogged. But guess not since new exhaust system recently. Just popped the p0170 code. Dont think theres any vacuum leaks. Fuel pump may be an issue. Gonna check fuel pressure in the next couple days. But figured I'd show some live data and see what you guys think. If anything might be out of place...

MAF and 02 sensors have not been changed since I've had it for 3 years now. But SEEM to be working. Not sure if there is a way to tell if the MAF is bad. Or even 02 sensors. Hate to throw $ at it when I'm not 100% sure thats it..

Let me know how the data looks. Even if something else looks abnormal. Thanks a ton.

https://youtu.be/KSDlLEXj4jk

 

Wow the video came out like crap. sorry. I can see it on my pc. Let me know if you can see the data. I'll take another vid if need be.

 

Looks like it'd adding a shitload of fuel according to your long term fuel trim especially with your short term adding fuel too, try cleaning your maf sensor, pull it out and blast it with some intake cleaner

 

Did. It wasn't dirty anyways. Don't get a spec of dust in my intake. I'm thinking it's maybe a faulty maf. Is there a way to tell? seems to be working.

 

So you pulled it out and cleaned it?

 

Yes. Lol.. I clean it regularly but it's never dirty. It's not that. Unless it's faulty. I'm thinking possibly upstream 02 sensor may be faulty. But it seems to be working and regulating. Around 3 volts. The rear is lower voltage like .4 iirc. Idk if you can see that in the vid. My bad if not. Also the fuel trim is at a steady 19.5 I think.

 

Yeah that 19.5 on the fuel trim is bad, its detecting a lean condition and adding fuel so either there is a vacuum leak(the fuel trim would drop when off idle because less vacuum) exhaust leak pre AF ratio sensor or faulty AF ratio sensor or.... and this is last resort ECU

 

Well I think the pre cat sensor is working. It fluctuates but only a bit. I didn't watch it on a drive tho just idle. Don't think it's an exhaust leak. Could be since I just got the new system installed but I highly doubt that. What about the maf?? What does the maf do when it's faulty? Or is there no real way to tell? I found one for $50 so I might take a plunge and risk it. Wouldn't hurt to have a new one and know it won't need replaced soon. Maybe front 02 sensor too. But that's $90...

 

I'm not familiar with the lbs/min reading on the maf, it seems to be responding to throttle change correctly though, if your gonna start throwing parts at it id be inclined to start with that front O2