Just don't drive it anymore. All joking aside maybe try changing your filters ie. fuel filter with a high quality one not the white box junk, (trust me on this one).
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
I'm not sure what they call it. But it's not throttle body injection. TBI is simialar to a carberator where the injector is in the throttle body and the fuel is dispersed via the intake manifold. Our throttle body only handles air.
Registered: 09/12/03
Posts: 14035
Loc: Fort Worth, Texas
I wonder what they call the goofy set up on the Vortec motors? The injector is centered inside the intake manifold with 8 legs and a poppit valve for each cylinder.
I noticed a drop in fuel mileage when my cat got plugged...went from 28 down to 24 and also no power. I know it's not legal everywhere but I hollowed out my cat and got an O2 simulator so my engine light would be happy. Result was 29 MPG and the power was back. Maybe the U-bend delete would help too. I also noticed a small difference when I changed plugs, wires and put in a fresh air filter, I also use strictly synthetic oil in the engine and transmission. As others have said, it's important to keep up with the maintenance for maximum efficiency.
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2004 Grand Prix, no mods.