2G Running rich

[jmonterful]

Okay so i posted a while ago that i had a 20g with all stock fuel and when i was hitting boost it will cut and start failing also the motor would start to shake alot more we all thought i was getting fuel cut. After that i cleaned my spark plugs that were black and the car started working a little better. Yesterday i finished installing my wideband set it on p04 and turns out i'm running super rich! At idle it is fine around 14.6,7,8 the thing is when i get a little on the gas it starts going all the way up to 18 and i think it even goes above because it marks 3 lines (- - -) its an aem wiideband with the bosh o2 sensor by the way. I did some research and it looks like my maf sensor might be failing it has all the simptoms it also has a cold start everytime i turn it on i have to rev it up about 2 1/2k for about 30 seconds or esle it would turn off when its warmed up it will turn on right away. What do you guys think it might be? Or what should i check to bring those fuel down? thats about the only problem i have with it now. It was running and spooling fine before so what could've gone bad? I almost forgot! one time it heated up and started squrting antifreeze on top of my maf and the fusebox cause i didnt have my reservoir the only thing is i dont remember f it was fine before that or it started failing after that. Sorry for this long ass paragraph but i tried to give as much detail as i could. Thank you guys yall have helped me so much with my car as of now

 

[boostdawd]

U need to shoot for an afr of 11.1 when going wot. 18 or so indicates your running really lean. This may melt your valves or put a hole in your pistons so be careful. I would first start off with general maintenance like changing plugs and cables and doing a boost leak.

 

[boostdawd]

Also. Please fill out a profile so we can see what mods you have and what your working with.

 

[Dsmkauai]

You are hitting fuel cut and runing super lean. Stop before you go boom. Get your fuel system up to par or turn the boost way down. Stoich is 14.7:1 meaning 14.7 parts of air to 1 part fuel, perfect mix. Rich would go less like 10:1 meaning less air in the mix and more fuel. Lean would go more like your 18:1 meaning more air and less fuel. Make sense?

 

[ohlegend]

I second the boost leak test. I was running into the same problem. 14.7 at idle, then super lean while driving. I had 2 major and 2 minor leaks.

 

[jmonterful]

Fi appreciate the info guys i thought it was the other way around. Lol i think i'm gonna do some maintenance first as the first guys said thwn i'm gonna do a boost leak test. And then i'll upgrade the fuel system. I'll stop the car for around 2 3 months cause i need to go to cali but once i come back i'll buy and install everything i need on black friday to get thise deals i'm not too worried about the engine rn as i'm having it built new pistons, rods, headstuds, ecmlink hopefully everything goes well. Thank you guys! Ohh and i'll fill my profile info haha