That's why I'd like to learn....

One thing no one mentioned is the TUNE. Your tune can have great affect on your spool. NorcalSTRrida touched on this with EGT's.

Parts that will help your turbo spool are TBE with TP, LICP, UICP, intake and of course going to a bigger motor like a 2.3 or 2.4

No one mentioned 200 shot of NAWZ

JK

If you are close by us in Florida (We are in Debary Fl) - stop by I can explain in person and show you a few things if you really want to learn.

Mike Huml

Well I'm not going to mention names but some tuners hurt spool... LR2.4 FTW

Mikey

Literally every single item you listed makes a turbo spool slower.



Scorke

You are not correct... Having a larger 02 housing relieves post turbine backpressure and does increase spooling capability.

Mikey

Here is a little info on Twin Scroll.

http://www.modified.com/tech/modp-09...ign/index.html

Long story short pairing cylinders that are 2 stroke out of phase keeps out some of the small pressure drop associated with connecting them in line.


Some of the other items discussed here all relate to trying to reduce the rotational inertia of the turbo rotating assembly, increasing it's efficiency at compressing air, speeding up exhaust flow powering the turbo, or reducing the volume to be pressurized. The turbo itself is increasing the pressure of your intake system and the more you cool it the less density and the more time to required to spool (thought the advantage is usually more power).

Hope that helps a little.

You really need to do more research

What spools a turbo is exhaust pulse energy. The intensity of that energy is largely governed by pressure and heat. Each exhaust pulse is like a high pressure sound wave that travels along the walls of the exhaust port, manifold, and turbine housing, on its way to the turbine. This is important, because any abrupt changes in the diameter of those walls, or any place where the exhaust pulse makes a sharp turn or gets reflected, results in a loss of energy, and that impacts spool performance.

This being the case, getting the best possible spool characteristics begins with fundamentally sound exhaust system design. Some compromises must be made in designing a manifold that works with the factory EVOs turbo configuration, and some pulse energy loss is unavoidable with conventional T3 and T4 style turbine housings, especially open housings.

1. Show me a test where going from a stock to larger than stock intercooler decreases spool time.
2. Show me a test where going from a stock to larger than stock intake manfiold decreases spool time.

Any time you increase the size of anything between the turbo outlet and intake port it usually results in increased spool time. There are countless tests of stock vs after market intake manifolds causing this.

Think about it logically, bigger piping/intercooler/intake manifold is going to take more time to fill than a smaller one.

Scorke

Scorke, why are you quoting what I said? You are wrong on the 02 housing so there is no need for you to quote what I wrote to you then try to make your case, because you are WRONG.

Mikey

Its like beating on a dead horse.

+100

Doesn't a higher compression ratio also make a turbo spool quicker from more pressure?