Quote:
Originally Posted by SilverSurfer
IMHO the bung is so far down the exhaust that it will have no detremental effect, only a slight reduction in power.
Lucky's car is only 350BHP (ish) so the % loss will be neglegible.
If the restriction was in the header or up-pipe that may be a different matter because the exhaust gasses will struggle to escape at high rpm / high boost and may cause detonation.
The exhaust gasses are well on their way out of the exhaust by the time they have reached the bung and would of also disperssed, cooled and reduced in density at this point.
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I dont agree with YHO, sorry.
treat the exhaust as a hose.. and the cylinder as a tank the hose is draining.. it makes no different if you restrict the hose flow at the end of the hose or halfway down it.. it just restricts the flow.. less flow, the more back pressure, the more dirty gas in the cylinder for next stoke etc...
The only exhaust I have found to flow well and be quiet enough to no annoy and attract attention is the revolution 3inch exhaust.
But I find it great for a month or so and then two quiet so I swap about
Simon