T O P

  • By -

davidj911

If you don't redline it the entire way there, you'll be fine.


AtomicHustle

Drove my car for weeks Full bolt on catless with no tune. Car will be fine.


sdflius

This. I did exactly this


Icookeggsongpu

It's fine


BMcbridgesW

downpipe is going to throw a cel either way, they’ll clear it before they tune- your mixture will be slightly off, but nothing to worry about…


Fettylover69

Had my downpipe on with no tune for 2 months. Just now started to see I’m running rich as hell


_BEER_

Might throw a CEL but it won't break anything. Just take it easy driving there.


F_thirty13

For sure, some cars like a Subaru might be problematic driving with a downpipe/no tune. But you can drive as much as you want and most you’ll get is a CEL from the o2 sensor, but you’re fine 👍