No... I've been running mine with G3 intake and Berk HFC's & CBE for about 6 months now. No check engine lights and it runs fine. I do plan to get an Uprev tune this summer. I was concerned I'd get check engine lights with the HFC's (some people do) but no issues. If you keep your stock cats, I've never heard of anyone getting CEL's with just intake and CBE.
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Berk HFC & CBE, Stillen G3, UpRev & tune by PSI, GTMat, 3M, Swift, StopTech, H&R 20/25, GT-R,
324 whp & 262 torque
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