sidewaysinamg

Does anybody in SoCal have EP1 installed on their 997.1? I was wondering if I could hear it out before ordering one with Stef.
TIA!

bodi

Sorry I don't live near you. I installed one on my car about a month ago. Great sound. I have a cab and thought it would be to loud, however it doesn't sound much louder than the stock exhaust until you start to push the car. Quality from Stef was great. He even provides the installation tools. Don't think you can go wrong. One other benefit is it reduces the turbo lag due to the reduced back pressure. Let us know what you decide. I'd like to know what you think if you decide to go forward with the install.

sidewaysinamg

Thanks bodi. I like it a lot in the videos, just wanted to check if there is any drone during highway driving ( 6th gear, 70 mph ). I will PM you if I have any questions regarding the installation.

Your cab in midnight blue looks stunning.

bodi

I don't believe you will have any trouble with drone in the coupe. I can hardly hear the exhaust inside the car with the top up. Sometimes with top down I get what I would call a minor drone but you only need to change rpms a little to stop it. One thing you can hear on the car is the turbos spinning up when you accelerate. I personally like the way it sounds. You could never hear this with the stock exhaust. Stef also sends step by step photos for installation.

jhbrennan

If you have 6 speed MT you really should consider the EP2. EP1 definitely for Tip but I had EP2 in two different 6MT 997.1 TT's and the sound was not obnoxious at all.

bondjockey

But EP warns of some drone with stage 2? I am thinking of going with EP and have a manual but want to minimize drone and prefer quieter vs louder.

jhbrennan

Warning is for Tip cars.

atcbi5

It's downhill from here! Long live the non puluting Mezger engine!

CodeRed

I have an EP1 on order...but I prefer a stealth approach to my modded cars, to each his own...cant go really wrong w either one.

kitwetzler

I have a 6MT cab and I have an EP2. I'm very happy with it. I had an EP1 on my 07 997tt coupe. It was arguably too quiet - the EP2 makes a much nicer noise and it's obnoxious, except very briefly at 2200 rpm. I just don't cruise in that range. My wife commented that the EP2 is a bit loud on cold start (in the garage with the top down (door open of course) but it's pretty subtle after that.

speed21

Agree. I would also heed Stef's advice there. I found EP1 to be the perfect blend and is loud enough on the outside without being intrusive on the inside to any degree of being annoying (droney) as the other AM systems are for the .1tt. If OP doesn't like the EP1 then he is basically back to the stock system as none of the others deal with the drone as effectively as the EP. I'd be very surprised to hear if he found it anything other than sensational. The added performance is a bonus.

Greg Lab

I agree, I think the EP1 is perfect, definitely no drone inside cabin, and nice rumble/grunt outside, sounds great, like a turbo should.