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AZIROC · 09-13-2025, 10:05 AM

You would need a tune if you are going to delete your rear cats. If you are going to do that, u might as well get headers and pay for a tune once

09-13-2025, 10:05 AM	#8
AZIROC Drives: '86 IROC-Z '18 ZL1 Join Date: Jul 2019 Location: Arizona Posts: 861	You would need a tune if you are going to delete your rear cats. If you are going to do that, u might as well get headers and pay for a tune once