Which makes the most power?

The you tube vids of each sound great...the downpipe might sound a little better

Will you throw a code with the down pipe replacement?

Thanks in advance!

 

downpipe by far will give better power...especially if you give it a tune (will get rid of the cel and will run much better)

looking into akrapovic. it's pricey, but well worth it. no drone like a true catless. it's 2.5 with a tiny 100cel but sounds great of fJCW's

 

would a true catless dp drone? (assuming still running OEM stock JCW catback exhaust system)