Hello
so I just bought my 2010 Chevy cobalt ss and it had a gauge showing engine power it normally hit about 370 and then my turbo started to cut in and out and when that happened it would show around 90 when I'm flooring it so I turn it off restart it and it's all good but it continues to happen then I got a misfire code and I was running around 250 I replaced the ignition could and spark plugs and it went to 300 but I still don't have the power I use to have does anyone have an idea to why I lost that power ?

 

Car is done for, burn it to the ground

 

If you notice something wrong with the engine, why the hell would you floor it?

 

Is your car tuned?
Do you have upgraded MAP sensors?
What fuel are you using?

 

You need to be more descriptive in what parts you used and I’m guessing you are talking about the rpd display? Read up on your car here in the forums because it sounds as though this is your first performance car. Hp cars can be quirky and it helps if you have some mechanical knowledge when getting one.

 

 

TLDR: Car is screwed, OP floors it to test malfunction status.

But seriously.

Stop beating on it. Do you have any codes? Was the Check engine light on or blinking?