iyad.2010

deleting cats can give you around 20 - 25 hp but you have to reprogram the ecu

iyad.2010

shardul did you tune your ecu to git rid of the cats or did you just removed them with a stock tune ?

cuz now i am thinking of deleting my cats for more power ( stock ecu )

allot of people told me that i may loose power if i did delete my cats without getting a tune

benz_addict

shardul or anyone who have removed their cats, please post a sound clip!!! PLEASE

Dr. Tune

I don't have a sound clip, but it did not make a drastic change to the exhaust tone. It did increase the sound in a good way. Only downside is that the exhaust fumes are more noticeable
I'll try and post a clip tomorrow, but I also removed the stock mufflers and replaced them with some aftermarket stainless steel resonator mufflers, which I did mainly for larger exhaust tips as the stock tips are on the small side especially compared to the S55.

Overall combined sound is equivalent to your average cat-back exhaust.

This is how they look.