I am just talking exhaust, for their coilovers, I agree, but in regards to test pipes, what real R&D do you need to do? It's just a tube... And if you make the argument that you'll get a CEL, almost all the companies that FIRST made test pipes had CEL's then they were like OHHHHHH, we need to make the bung longer to make the O2 sensor not sit in the slipstream on the exhaust gases
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