someone please help me

i know this has been asked a billion times but i can find and pics big enough for me to see which line and ive searched for hours so could someone please help me out
thanks

Mine come on at about 230 and takes the same amount to fill it up

do you happen to know the normal idiling vaccum reading with an oe cat and at rpm so I have something to compare it to?

I'll give that a try I don't think it's clogged I just thing its smaller that the or and I believe it's restricting my exhaust cause I feel a performance decrease mpg decrease and the o2 code

I have intermittent o2 sensor codes but I replaced them with Volvo sensors so that what I don't understand and its been going on for a long time I think it was about time that I did the catalytic converter it seems as though the cat is choking it out also I seem to have a coolant leak but I can not ...

Can someone please help

Hey everyone thus fuel economy is killing me. I have already done the headgasket other gaskets and a cat and o2 sensors I also did the full pcv system I do plugs and oil religously have a new air filter but have a k an n filter fan decide whether to put it on its a 2001 s 40 and I only get 250 miles...

Hi guys i am going to install my mbc and my boost guage and a k &n filter first where do i tie in for the controller and the guage and where can the guage be easily mounted in the car thats got me stumped and what are safe boost levels for a completly stock engine
thanks tom

nope nothing changes and yes in park as well as while driving