car is a ln2 2.2 dirt track car
it runs great until the check engine light comes on and than it picks up a stumble and will pop threw intake turn car off and start it back up runs perfect again car has new plugs and wires
runs a header and short ram intake
i did how ever un plug the tps while engine is running poor and it makes no difference at all so im assuming tps? i dont have an ohm meter and the car is an in between obd1 and 2

Check the CEL code? Maybe?

cant find anyone with a scanner for 1.5 car is obd1 but has obd2 connector

update it was the tps no more sputter i also pulled the bosh plugs out and put in delco double platinums now car stumbles only under hard accel does it under no load as well as load only if i punch it sounds like its loading up too much fuel no cel's now so maybe coil's now?