Better fuel economy?

[Spaniel1287]

My 95 Talon TSI used to get abotu 280 miles to the tank. I figured that wasnt that bad at all. Well when i started getting 190 miles to the tank it kinda torqued me off like it would almost anyone probably. I'm thinking after i put on my Walbro 190 fuel pump that this could have caused some of it. I am almost certain that the o2 sensor is not dead. I also don't think that the fuel filter has ever been replaced. My mods are:

Intake
Full 3" Exhuast
MBC
Walbro 190 Pump
UICP
1g BOV

Can any of you guys help me with my fuel economy and give me some reason as to why im getting such poor gas mileage. Thanks.

 

[Quasimondo]

Even a 'sleepy' oxygen sensor will hurt your fuel economy by not making the ecu adjust it's STFT (short term fuel trims) quickly enough. Check for intake leaks, replace/clean your air filter, and replace your fuel filter.

 

[Spaniel1287]

Yea i might try just replacing the front o2 sensor and get a new fuel filter and hopefuly its one or the other

 

[herovueboi]

I am sure that having those mods wouldn't cut your gas milage by that much. I had about the same modifications and my gas economy went down just about 10 miles due to me being so much boost happier. Have you changed your plugs and wires out recently? If not, you should have a look and make sure they are in tip top shape.