The car was never Dynoed with the 2" collector that the OBX came with...
The very first time this car was dynoed with the SR20VE it put down 167whp and it has been improving since then with the same header.... until now no major improvement from the header... But you have to test to know...
The very first time this car was dynoed with the SR20VE it put down 167whp and it has been improving since then with the same header.... until now no major improvement from the header... But you have to test to know...