Doing these tests last winter was an eye opener and made me start telling guys it wasn’t worth sending their intakes to me for port work. Even if I lowered my prices to 250.00 they still have crazy shipping costs here and back. It was 69.00 just to send that Victor340 back to Edelbrock last week one way. If they are capable of gasket matching they are probably seeing 90% of the gains on a dual plane intake. A popular member of this group told me shipping is going up 6% in January.