i just got a 2004 vette coupe the stupid ex owner ran 110 race gas in it the car now rans high 14s help me out guys i change all the 4 o2 sensors it feels a lil better but its not ranning its fullest

 

Bad news for you, in 2004 GM used the new C6 system. Your fuel filter is a screen on your fuel pump IN YOUR GAS TANK.

Here is the Shop Manual procedure for replacing it:

Document ID# 958011
2004 Chevrolet Corvette


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Fuel System Cleaning
Tools Required
J 34730-1A Fuel Pressure Gauge
J 37088-A Tool Set, Fuel Line Quick Connect Separator
Caution
Refer to Battery Disconnect Caution in Cautions and Notices.

Disconnect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Relieve the fuel system pressure. Refer to the Fuel Pressure Relief Procedure .
Drain the fuel tanks. Refer to Fuel Tank Draining Procedure .
Remove the fuel tanks. Refer to Fuel Tank Replacement .
Remove the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Inspect the left fuel sender strainer. Replace a contaminated strainer for the left fuel sender only, and inspect the fuel pump.
Inspect the left fuel sender fuel pump inlet for debris. Replace the left fuel sender assembly if you find debris in the fuel pump inlet.
Inspect the right fuel sender strainers. Replace the right fuel sender assembly if you find a contaminated strainer. The right fuel sender strainers are not serviced separately.

Important
When flushing the fuel tanks, handle the fuel and water mixture as a hazardous material. Handle the fuel and water mixture in accordance with all applicable local, state, and federal laws and regulations.


Flush the fuel tanks with hot water.
Pour the water out of the fuel sender assembly openings. Rock the tanks to be sure that removal of the water from the tanks is complete.
Install the fuel sender assemblies. Refer to Fuel Sender Assembly Replacement .
Install the fuel tanks. Refer to Fuel Tank Replacement .
Refill the fuel system.
Install the fuel filler cap.
Connect the negative battery cable. Refer to Battery Negative Cable Disconnect/Connect Procedure in Engine Electrical.
Perform the following procedure in order to inspect for leaks:
Turn the ignition switch ON for 2 seconds.
Turn the ignition switch OFF for 10 seconds.
Turn the ignition switch ON.
Inspect for fuel leaks.
Program the transmitters. Refer to Transmitter Programming in Keyless Entry.

 

What does 110 race gas have to do with the fuel filter?
Even if it was leaded gas, its just the O2's and the cats that get trashed.

 

oh god any ideas

 

well the thing is it haves no cats the car bogs every time my ran it hard

 

Unfortunately we have the RPO FFS fuel system. We do have a fuel filter in the fuel tank, and it is not just the basic fuel strainer screen here is a link that explaind in great detail.

http://www.corvetteactioncenter.com/...el+Tank+System

 

thanks so much guys

 

what else can i check why is it ranning in the 14