Project FR-S – Testing the Nameless Performance Second Generation Header

In this view from the top you can see just how tightly the primaries are packed in there.  Nameless has done a suburb job of packing a lot of stuff in a small place and not compromising the header design for packaging reasons.  The folks at Nameless told us that we would have to do some ecu tuning to get the most out of the new design.  Equal length and larger longer runners means that the engine really responds to much more aggressive overlap.  When running more overlap, cars typically pick up 15 lb/ft of torque or more with this header.  However with a supercharger we cannot go overboard with overlap or we will be blowing the boost out the exhaust port.  Some custom ECU tuning is in order which we will do in the near future which should yield a more realistic view of the full potential of the header.

On the dyno we did see some improvement with the new Nameless header over the prototype.  At 3000 rpm we saw a 8 lb/ft gain in torque with a peak gain of 1 lb/ft for 175 lb/ft of torque total.  We saw a 3 hp gain in power to 214 hp.  Note that although the gains are slight, they are across the board.  You have to remember that our Superflow dyno is very conservative and this car would probably be rocking over 225 whp on a Dynojet. Remember that this header does require move valve overlap to get the most out of it. We would like to raise the rev limit a little more as well because the power is still climbing at the fuel cut.  Another indication that we need a new tune is that our previously steady and consistent power is beginning to fluctuate again, a sign that the FA20 needs some ECU love.  This chart was one of the lower power pulls we produced due to the engine's fluctuation.