I bought them from Champion. They were a take-off set from one of their 997.2 new car builds. Got a pretty awesome deal on them too.

 

^Yep, gotta commend Champion as they played middle-man with one of their customers for me as well! I had another tuner tell me that they were the same cores and no benefits to be had. ...move along, nothing to see here

 

When you get both side installed, if you can do the same test that would be great, if both banks do in fact show the same temp, that would mean you test is 100% accurate.

I don't know if there can be some sort of factor that would make one bank hotter in IAT than the other, if your hardware is still in place, that would be a good time to try it.

 

Hi,

My 996TT has:
ECU Tune - (1 BAR)
Forge Silicone Hoses
Forge Diverter Valves
Inbox Kn Filter

Can I gain more power with the installation of the 997.2 / GT2 RS intercoolers?

Regards,

 

You will see an increase in power simply because of the drop in air temperature being sucked into the engine as compared to the GT2 intercoolers on the 996 and even MORE so compared to the regular 996TT intercoolers which I assume you have?

However this is not the main reason you should be installing these. The fact that these intercoolers will offer you more sustainable lower temperatures is beneficial to you. Heat soak is an issue. Which is basically the heat the engine and components create after each run.

Any way to lower the temperature consistently and repeatedly vs. an opponent will give you a definitive advantage and in the meantime prolong the life of the internals and components of your engine.

 

While thermal efficiency is one of the core measures of an intercooler, pressure efficiency is as well. It worries me that there is some evidence that the 997.2 ICs have slightly greater restriction than the previous generation.

While a dyno will not demonstrate the value of the thermal properties of the intercoolers, they will demonstrate a substantial pressure drop across the inlet and outlet by decreasing overall power. It is the one and only property that can be demonstrated on a dyno...without it, I worry that superior thermal efficiency is made at the expense of flow.

 

Valid Points Mr. Moderator!

For track use, which is what these intercoolers were intended for, isn't the MAIN purpose thermal efficiency? Lap after lap of reduced air temperatures and heat soak make for a very good lap time and efficient performance from the engine.

Also we do not have dyno sheets illustrating the restriction in pressure do we? I have gone through most of the thread earlier but haven't updated myself on it.

 

Sure, but not at the expense of more restrictive flow.

There is a graph on a flow bench that I posted up a few days that suggest there may be a greater pressure drop than a stock IC. Only a before and after dyno would show if this has any effect on engine power (noting that a dyno won't show you anything about thermal efficiency.)

 

Agreed! Maybe Eric would be so kind as to oblige

 

Heat soak will be more evident on the dyno as it is almost impossible to simulate significant air flow across the intercoolers, squirrel cage fans don't come close. I would like to see that also, if you were closer to Nashville I would let you use our Dynojet for free to find out.

 

if you start to loose power the more you run the car, then yes. If you go to a track and do a bunch of runs and your trap speed gets progressively slower then you need better IC's. If all you have is a tune, you might be ok with GT2 IC's.

 

Based upon the stress applied to my turbos from APR tune (that lead the car to an astonishing 5,5sec 100-200) IAT climbs to 70c for a run from 50-250km at 21c ambient temp...Boost has been logged as well and so when GT2RS ICs are installed,IAT and boost will be logged again...If there is a problem and the flow is not enough,max boost should be lower.

 

We have a data showing the flow is worth from a great tuner... Ok.
But the 997.2TT stock or tuned is a rocket, the GT2RS boosts 1.6B;
those Ic's are the answer from Porsche at the 996-997.1 Ic's issues, would they forgot this parameter?...

We will see Skand' results which I think will be very representative regarding the level his stock vtg's are boosted...

I can't hide you this thread makes me waiting before ordering a set...

 

Pascal wait a few more days my friend...997,1 has a greater need for better ICs than GT2RS...smaller turbos are pushed harded and so they produce more heat than larger turbos when tuned...

 

Right, Marek already explained it...
This means that those parts would be ever better for me with modded VTG's...
(while GT2RS VTG's are not very big, cause if yes, the car would produce 700hp with 1.6Bar)

Secondly Skand', I would be interested to know your EGT evolution when you will data, might grow up if IAT slows, no?
(more density=more pressure=more heat)