loveivs

I had GMG header+200cel+side muffler delete with sharky rear bypass.

There was no CEL warning. I've had the header and catalyst since July. No issue had been found so far. However, I soon discovered the full exhaust was too hardcore for me. I will not suggest anyone use this setup for every day driving. The exhaust was very loud, it's almost like a straight pipe exhaust. The massive drone made me head ache. Every one on the road was looking at me. In the meantime, I had to keep the car below 3000rpm. Due to lack of back pressure, I have also noticed loss of power. That's another reason I m not suggesting people getting the full exhaust unless the car will be frequently taken to the race circuit. (losing low-end torque to exchange high-end power)

On the second day after installation of exhaust. I put back the OEM side muffler (valve disconnected). The exhaust sound has turning down to the acceptable level. I have running the setup for a month. Surely there was certain amount of drone for highway driving. But I have no problem with that.

p.s Sharky bypass and 100mm tip was the first thing I did. That's why I don't have the GMG rear section. If any one is not sure what to get, I suggest either go with side muffler delete or rear bypass first. You can always add more later after when you are bored with your exist system. lol

911_RS

loveivs: I see.. but with headers, oem side mufflers and rear section delete how's the power? Still less torque on the low end or it's better than the stock setup?

loveivs

Low-end pick up is quicker, I think that's because of the 200 cel sport cat. I'm taking my car to the track next month. I will find out if my setup is better than the stock. A friend of mine has a stock GT3. I will be driving his car after I do a few laps on mine.

911_RS

Any sound clips of your car? wanna hear how it sounds

loveivs

Ok. I will make one in next couple days. Post link later