Currently, I have a Crucial Downpie and Crucial Catless Midpipe. I have an EcuTek reflash from GST. I plan on purchasing the Crucial Catted Midpipe so my car isn't so stinky. Since my car is tuned, I was wondering if adding the cat would require me to get retuned?

Thanks,
David

 

I wouldn't see why it would, but then again I'm not a tuner. Best thing to do is ask the person who tuned your car

 

With the cat it may change the backpressure and create a problem in the long run. Call Paul at DBtuned he'll give it to you straight.