ScottyPimpin

I'm new to turbo cars and trying to get an understanding of how increasing performance works exactly.

I understand tuning and i know the gm tune or trifecta tune will put this car at 290-300hp with stock parts. What I don't understand is how bolt on parts effect anything after, let me explain.

If a trifecta tune gives the car 300hp @ 24psi, how would you increase performance without increasing the boost further? What i don't understand is how replacing the intake, dp, catback or intercooler will increase performance if you're still running the same 24psi that you were before adding the aftermarket parts.

Would anyone care to explain this to me?

IgottaWoody

It makes all the power come on a lot faster..(in a nutshell), though it does increase overall power somewhat

SmootHHR

If you plan on a tune AND bolt ons, do the tune AFTER so they can tune with the bolt ons accounted for. Most of those bolt ons are intended to increase airflow in and out of the engine. They also increase noise :-)

KyS10

I am by no means an expert. If someone who knows more about this thinks I am off base here, please correct me. But the way I understand it is that, with a turbo engine, bolt ons (exhaust, intake, ect.) allow quicker air flow by removing restrictions. Therefore your engine doesn't have to work as hard to spool your turbo and decreases lag and spool time. Most bolt ons probably won't give a large peak hp/tq increase. But they will allow a good "seat of the pants" increase because your power will come on a little quicker.

WSFrazier

It's not just boost. Things like spark advance/timing help with power just as much.

Also, airflow /= boost. Boost is measure of restriction. With airflow boltons, you can make the same amount of power, with less boost.

SS fan

The bolt on's, will not blow up with increased boost.

sleeper

Engines are big Air Pumps, More Cool Air it can Inhale, more it should Exhale.

When these 2 are optimized, the magic happens..

SS fan

The cooler the air the more fuel it can hold. More fuel in the same space = more go when it ignites ..

IgottaWoody

Kinda like beans....the more you eat the more you.....well, you get the idea

terryk

Sort of like - "how does larger brakes help anything with ABS?"