Stealth heads vs Eddy performer rpm

abodyjoe said

its the ports that are a copy of eddy heads not the outside look to the head. i hear they run a eddy program on the source heads to open them up..

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That makes sense since they flow close to the same. I'm sure there are problems with the eddies that we dont hear about same as the 440 source heads. I can buy the same part and Joe Schmoo and get a different result.