Just spent a lot of money on a tune -up and still have poor performance

Usually a tune up consists of new spark plugs, plug wires, cap and rotor, fuel filter, air filter. But it still doesn't take care of the carbon build up in your engine, **** in your injectors, and sludge in your engine.

Here's what I reccomend: Purchase a bottle of seafoam. It's $13 and to clean out the c arbon in your engine you take off your break booster vaccum hose and **** up 1/3 of your seafoam. Then the other 1/3 of the bottle can be added to yuor gas tank to clean out the gas tank fuel lines and fuel injectors.
Lastly you can pour it in your crankcase but the oil will have to be changed 200km after.

There are a bunch of topics on the internet about this in way more detail. Please do look into it.

Also when you start up your car after putting the seafoam in your breakbooster line you will have to rev the engine so it breaks loose the carbon and when you rev it will smoke out of your exhaust and when you rev black carbon will pour out of your exhaust and you should get a smoother idle, accelation and will revive lost horse power.

Good luck and have fun