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Seandonato73 said:
First the man is totally full of poop. In a perfect world we would get 100% fill rate of the cylinder. Well use a 100cc engine to keep number nice. The can style muffler at best will allow this (not really) all an open header does is remove the restrictions of the can muffler. A tuned pipe used exhaust pulses to pull the spent charge out of the chamber and then push more charge mix back into the chamber giving a greater than 100% fill ratio. Hence why we see such a gain over the stock can, without changing anything else internally in the engine. We can expect up to an 40% (ish) over fill on the stock engine with a well designed tuned pipe. No open header is going to achieve this, at best we can hope the header will have negative pressure and just suck the spent charge out . Stock cans, could be modified for more power, but just don't have the special requirements (typically) needed to get the cones situated in a way that would give the same results as a tuned pipe, so largely your still working in the open header principal, achieving just better scavenging. Tuned pipes can be tuned for different rpm ranges, trying to favor torque, or rpm (hp) typically you will see a large pickup in both, but one (hp or torque) will be more dominant.
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Agreed thats how Expansion chambers work ( proper name ) so about the MAN are you referring to Doug at ESP ? , the quote that was quoted is BS for sure. Prob. " Fake Quote " LMFAO
 
See poop like that makes me lose respect for the people that challenge my words. So I'll keep it to myself...he said he tested it himself on HIS dyno
 
Rep732 said:
See poop like that makes me lose respect for the people that challenge my words. So I'll keep it to myself...he said he tested it himself on HIS dyno
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Rep732 said:
Trust me I have better things not to do than come on an rc forum and spread false information...
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Settle down mate, I have zero reason to doubt that's what he told you, just find it odd that he would say something like that, to a customer, but like Zed has said he seems good to bash the competition so ?‍♂️
 
I never meant this to rag on a MFG in this market ! the proof is in the test results as far as I am concerned , and I will test what I have a Race Ported Head/piston I got from DDM .
 
You may talk me into peak hp where torque is almost gone.. exhausts are there for a reason. Turbos are awesome because it takes something otherwise wasted and makes it work for the engines benefit just like a proper tuned exhaust
 
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