car bogs at high speed, iv changed plugs wires and oil change.
Are you asking a question or just telling us?? lol
If you are asking for help, then we need some more info…
Do you have a CEL (check engine light) on??
Automatic or Manual transaxle??
At what RPM does it bog, does it do it at the same RPM in every gear or only at the speed that you never mentioned??
How many miles are on it??
I am guessing it is 1.6L N/A since you didn’t add a S to the Roadster S making it a turbo…??..
Other will probably have more questions
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My guesses, one of these
- ignition system
- engine air filter
- fuel filter
- fuel pump
- catalytic converter
- obstructed exhaust system
I think the first test I’d do (beyond the good ideas posted above) is a fuel trim, done at the time the bogging is occurring. If your engine is other than a gasoline NA (non-turbo), suggest to clarify its configuration.
Is it an automatic? Does it downshift when you floor it?
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