I finally found a tuner who had a 4wd dyno down here in South East Florida. The company's name is Horsepower Logic located in Riviera Beach. (561-842-8333).

The engine mods on my car are X50, FVD flash, FVD exhaust.

In case the print out is hard to read:

Run HP Torque
1 : 428 : 415
2 : 429 : 403
3 : 436 : 414

Here are the results:

 

nice! that looks great...what are the stock numbers?

 

That's at the wheels numbers right?

 

How much boost are you seeing? 1.2 BAR?

Do you have upgraded wastegate springs? If not, they are a MUST to tke the most advantage of your flash.

Much better throttle response, better mid-range TQ and stronger top end. You can definitely feel the difference.

 

I actually brought my computer and the flash cable to test it with out the flash but they guy running the dyno said that Porsches have a "learning curve". Does that make sense? He told me to do the flash and drive it a few hundred miles before bringing it on the dyno.

 

Yup.

 

I am sometimes seeing 1.1 bars. If it does ever hit 1.2 I might be too busy to notice . The boost also comes on much faster than before.

All that from just changing the wastegate spring? Neither FVD nor my mechanic (Gulf Performance in Pompano Beach) ever mentioned it. Sounds like an awesome upgrade.

 

this is an absolute requirement. TRUST me on this one.

Somewhere around 1.0 to 1.1 BAR, the exhasut pressure forces your wastegate open and the exhasut gets routed around your turbos. Your chip is designed to get 1.2 BAR, but you are mechanically limited by the wastegate springs. Stiffer springs (or upgraded wastegates with stiffer springs) will keep the wastegate closed until the ECU tells it to open. The difference is almost as dramatic as getting the chip in the first place.

 

Is this Evolution Wastegate Boost Kit what you are talking about? What other source can I check out?

 

isnt that kind of low ?
i thought chipped k24 cars made 500 at the wheel ?

 

Yes. Other companies simply cut open the stock wastegate actuators, put in a stiffer spring and then clamp it shut.

[quote=Dirty Mac;1778270]Is this Evolution Wastegate Boost Kit what you are talking about? What other source can I check out?

 

His dyno numbers are AWD at the wheels. I would assume that if he disengaged the front drivetrain, the hp at the wheels would increase.

 

Todd at Protomotive also has upgraded actuators you can get. I have had both. Dramatic difference.

Get it done before I see ya at Sebring!!!

 

Do you need to upgrade the wastegates if you are flashing a non-X50 turbo?

 

Not generally since you don't normally exceed 1 BAR.

Some have reported better throttle response though but some think it may overspin the turbos potentially reducing turbo life.