Does anyone have any idea what would cause my car to bog real bad at full throttle at high rpm (5500-7000) ?If I go threw the full rpm range at 80%throttle or less it does not do it at all.Just looking for a place to start checking . Also it started after I put in 104 racing fuel.and even though the fuel is now ran out its still doing it.

 

Was the 104 fuel Leaded or not ?
If you used leaded fuel you killed your O2 sensors. They do not like leaded fuels at all.
One tank often is enough to kill the sensors.

 

I was thinking the same the place I bought it sells both but the boy who went and got my gas I would say needed help to tie his shoes each morning.besides the o2 sensor would it mess up anything else like say the injectors?

 

QFT!

 

Your blowing out your plugs. Get new plugs, I suggest NGK BKR7E copper. They are like 2.50 a pop. Mine are gapped to .35.

 

I thought running leaded fuel can ruin your cats also? But as the other person said check your spark plugs.

 

I am running NGK BKR7IEX-11 1 step colder plugs got about 15000 miles on them when i checked them this morning they were alot blacker then normal I just cleaned them .

 

leaded fuel will clog your injectors....check to make sure what type of fuel he gave you

 

Did you re-gap them properly?