More s14 sr problems

[jlmillionaire]

So after setting timing to 15 btdc with timing gun, i still have issues.The spark plugs are getting fouled out with carbon like mad , i put new ones in bkr6e i didn't gap them by the way i read that there pre gapped ngk ones. i tookv them out to inspect them fouled out within ten minutes of letting the car idle. also when i drive the car it bucks like crazy like a bronco lol , also the weird thing is its going threw gas like no tomorrow. i must of started with half a gas tank let the car warm up a couple times to mess with timing and etc.. and now its down to empty she must be running rich as hell. btw the way i have my boost couplings is ghetto from my hot pipe i have a 2.5 over a 2 in to the turbo inlet that the hotpipe connects to.also from my hot side i have a 90 degree cuopling that i bought from ebay that they sent is too big as well so that could be another issue. i have a fpr and is set to 36 psi. also guys i had to set the screw all the way tight on my aicv for it to idle to about 850 900 rpm. can any help me trouble shoot these issue the car is driving me insane but i dont want to give up because despite the issues and mental frustration i love the car thanks all