Re: DT Long Tubes modification!!!
There may be some merit on using a spacer for the rear 02 sensors.
What might actually work is welding an O2 bung onto the pipe, but not have any whole drilled into the pipe. Then drill a small whole, maybe 1/8". This would damp'in the sensor signal. I havent tried any of this though.
A proven fix is the O2 modification in my gallery, it works just fine.
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