Stared bogging down couldn't keep 6500 rpm figured it was cat clogged used decat cleaner now car came up with code p0410 incorrect upstream now when i give car little gas will excel up to around 4000 4500 rpm & it sounds scratchy like fouled plug in a 2stroke dirtbike. It has no pick up & bogs out at 4000 rpm please help.

 

Dude. Please make sentences.

P0410 is your air pump which is only active on startup ans won't affect driveability. Are there any mods on the car?

Ignition is the most common issue on these cars and it will kill engines. How recent are the plugs and coils? If unknown, or older than 25,000 miles replace preventatively and check the cat for clogging.

 

There is no mod. & I dont kno when coils or plugs were last replaced I will replace both. if it was the cat clogged. wouldn't it stink.?.??

 

Doesn't necessarily stink when the cat is clogged. If it gets to the point of breaking down and not doing its job, you're well into new engine land.