I think right now you have to go with these or with a 4K set of 5 inch ICs from protomotive.

 

For the price, the AM coolers should be 4X as good as the 997.2 coolers, and that is not the case.

 

Very accurate asssessment landjet. 1k vs 4k sure is extreme mark up. Mind boggling!

 

Another extensive (and pretty conclusive) test was performed tonight together with my friend skandalis comparing -in same road, similar conditions and same weight- AM ICs and GT2RS ICs. Large VTG car with modded internals (cams, rods, ported heads etc) running 1.55bar boost.

We got durametric logs, VBOX figures and also video. The GT2 RS coolers performed so much better than the AM ones that we were both shocked.
Before we post more details we saw an improvement of about 20-25degrees in IATs at 100-300kms (yes you read right).
IATs were getting as high as 59 degrees with the AM ones while with the GT2rs coolers they peaked at 41 degrees at around 250kms/hr and then started dropping to around 36degr at 300kms. We actually saw even lower IATs in some other runs.

in terms of performance;
100-200kms; 5.5 vs 5.0 secs best times
100-300kms; 18.65 vs 16.93 secs

Needless to say numbers above are personal best and i wonder if they could be improved with only 1 passenger.

Ambient temps were 12 degrees(AM) vs 9 degrees (GT2RS).

We tried to keep most variables constant as much as possible so we had the same car/tune, same passengers, same fuel quality, same exact road.
This was truly a big surprise.. More to follow

 

It was a long night...lastnight...Results were amazing...All acceleration figures were achieved at completely flat surface with 2 persons that weigh 440lb...
I couldnt believe that IATs were lower as speed was raising above 250km...Gt2RS ICs crearly outperformed very expensive and famous AM ICs...

 

Awesome! Not many ICs start lowering temps at speed (IMO this is where overly thick coolers bite you), can you post the logs?

 

I am sure George will post logs in the next hours...

 

i put these on my 2001 turbo with alpha 28s....its amazing...pull after pull the iat's are back down to ambient temps within 15-30 seconds.

 

This is great news to me as I'm going to use them with A30s..

 

Nice! You are limited on endtake size though as its just 1 7/8" I believe. I am pretty sure my 3" y-pipe is worthless at this point.

 

I'm confident they will flow enough though...member GT-TT should be putting out 600whp or so on them..

And I will stay in the ballpark of 650/700 cranck on pump...Tony says 650 on a conservative tune with room for more.

Furthemore, lets not forget that AudiKP put down 700WHP on A30s, stock ICs and stock inlet pipes.....

 

nah, pressure drop is cumulative, so there's still some benefit. Though 2x 1 7/8" fittings don't present much of a restriction below about 1000hp.

 

guys,these ICs are exceptional...Now we have data from a built engine with modified VTGs and rev limit at 8000rpm!!!Even the owner couldnt believe it...

 

This is good info! I have the i/cs on my car and will do some datalogging once this F$#$ing snow disappears. We thought it was spring and then all of a sudden it snowed here today. Aaaaargh!!!!!

 

So there it is; first file is the GT2RS ICs at 9 degrees ambient
Second file is AM ICs with 12 deg ambient.
Vbox files to follow.
Dimitri will post the video