Instead of starting a new topic.

What brand manifold would you guys recommend for a 6466 TS set up in standard placement, not FF.

Received all my parts today for a 2.2LR build and will start up with my old GT35 set up for now. But I went billet crank with Oliver I beams and 625 bolts on rods and head, I will have the ideal platform for more power.
Current set up should get me to around 630whp.
Would like to add another 100-150whp by going with the 6466.

 

Extreme Turbo Systems

 

Anyone using 8474 Black series EWG on Evo IX ? Whats your thoughts.

 

There is 1 Evo 9 using 2.2 EFR8474, switched from EFR8374. Made +50bhp, with minimal lag change. But it is different day and perhaps tune is not comparable, so one should not necessarily take this result of "End of all Ends".

Based on all the discussions, 8474 is clearly +50whp over 8374, and the difference/change is evident only at high-er boost/rpm, so past 5000/5500.
There is for sure some additional lag.

In my mind 8374 on 2.2/2.3/2.4 is literally a nice daily driver with evil potential, as I have witnessed 8374 in 5th gear make full boost 30psi by 3800rpm. It is that responsive.
8474 is likely less satisfying in response, but still really responsive for turbo of its size..

The major benefit of 8474 for those seeking top end, not necessarily just the response at low rpm, is the change in material used- it can take over-rev without damage much better than 8374.

If you are seeking "big turbo" I think 8474 is really an extraordinary choice for street car.