i dont know goin on my check engine light came on and it got it check out it says bank one is too lean but when i press the gas hard it takes for ever to pick up some times even bogs down almost and when i drive normal that dosent happen it accelerates normal and my fuel economy just sucks now only 11 miles per gallon i was at 17 - 19 any suggestions any one else had this problem and if so help please

 

Depending on wit model car u have. U could have a faulty injector a vaccum leak, and clogged throttle body, faulty spark plugs, wrong fuel pressue wit r ure mods.

 

I would have to ask you what mods you are running on your car. A lean trouble code could be caused by multiple things... ie. bad 02 sensor, air intake, MAF sensor dirty, throttle body dirty, throttle position sensor bad, or in general you just need a tune.

My car had a SEVERE problem with running lean. it eventually got so bad that I overheated the engine and went into limp mode (engine power reduced mode). I had to get it tuned and all its parts looked at. Don't wait to get that to point. Lean is not good for our engines since they are aluminum, running lean and hotter could hurt them over time.

 

i dont have any mods on it

 

You prob have a vaccum leak, and how many miles you have on it?

 

wow your a smart one op have you ever put a fuel filter on your car

 

our cars don't have fuel filters, they have a magic fuel fairy that never gets tired!

even if it didn't have the fuel fairy, why in the world would anyone want to spend a couple of bucks and a couple of minutes of time to swap out something like a "fuel filter"?

 

my check engine light is on went to auto zone to diagnosic gave me 2 codes, the one is a Supercharger by pass valve stuck, and the the other one say intake flow systen performance. can ya help me plz

 

Both codes contradict each other..... If ur bypass valve is stuck open meaning bypass solonoid then u need to replace it..... I say ure solonoid will fix both issues just me tho

Both codes contradict each other..... If ur bypass valve is stuck open meaning bypass solonoid then u need to replace it..... I say ure solonoid will fix both issues just me tho