Unfortunately, there is no cheap downpipe option with a no CEL guarantee. To get this guarantee, you need high-quality cats (GESI or HJS); both are relatively expensive.
Active Autowerke is the best option in my opinion
If that's the best sounding system in your opinion, then yes wait. As mentioned above you can get better pricing if you were to pre-order from a vendor.
Let me know if you wish to do that
Setup
Ignition on , engine OFF
Open the Turbo transformer Bluetooth app
Select connect
Click on settings, then select Zero to calibrate the unit (you only need to do this step once. No need to calibrate the unit every time you turn on the car)
Base PSI:
This is the PSI level at which the...