My next improvement to the 20V engine is the header, which now I'm using the existing 16v original cast exhaust manifold. Found an aftermarket header from rsr which the configuration of 4-1 is more suited to the high end screaming 20V black top.
Top quality from RSR japan.
RSR logo.
After the install, noticeably difference is the easier rev nature of the engine, and surprisingly the low end does not suffer much compare to the std. setup. But still need to tune the engine a bit due to the open throttle.
