Ok guys, just starting out in the tuning world and would like some input. I have the stock map in my car and was doing some logging to get a feel for everything when I noticed that my fuel trims are adding 60% more fuel. my low and mid are both at 150% and shor term is running from 98%-125% averaging around 110%.

This is a stock map.

My assumption is that I have a vaccuum leak somewhere. I have created a boot leak device and will be charging the system today or tomorrow to see if I can find any leak that would be causing excess unmetered air to enter the system during idle and cruise conditions. The car runs fine and I would have never noticed this condition without logging.

Any other thoughts on what to look for while doing the boost leak test?

All help appreciated.

Thanks

 

Boost leak test checks out good. could it be just the cold weather pushing up fuel needs? I thought the ecu compensated for denser air in other ways rather than pushing up fuel trims.

Anybody?

 

I think it was EvoScan's logging formula. Oh well. changed that and we'll see where I'm at now. Thanks for all the help everyone