808c2s

Agreed...what he said

RoadrunnerGTS

I don't want more volume from adding headers though. It's a daily, and the current out-going VC + ROAPs is loud enough, and I expect the Kline to be similar volume, just different tone.
I also prefer to do exhaust systems in stages, so can always add headers later.

MaddMike

I hear you. My Spyder is a DD too. I also did mine in stages, well two stages: everything else for the first 1000 miles and then the headers. The beauty of the headers is that they are not louder in normal driving conditions except maybe a few more pops and crackles but no drone. Once you open it up though, it really sings.

RoadrunnerGTS

So you have 200 or 100 cell? How bad is the smell?

ariazad

I ran the 200 CEL Inconel Kline unit (currently for sale in marketplace for a big discount) and can concur that it sounds very tolerable and manageable to when valves are closed and cruising. Also, with the 200CEL, I never had any of the funny smells of catless systems. Great system. Completes the sound profile of the 4.0L.

MaddMike

This. Car sounds glorious on WOT and takes care of any GT3 envy for me at least. No smell to speak of, which is important as I have a Spyder.

They are pricey and I did buy my headers used in the marketplace while the rest I bought from Supreme. I also went inconel all around because you only live once.

incursion

Don't the cats burn out quickly if you track regularly though?

RoadrunnerGTS

Thanks. Will see how I go without initially. Probably wait until warranty expires as here in Oz changing headers would likely void warranty, whilst cat-backs are more a grey area

UncleDude

I can’t imagine wanting more volume at full throttle, I’m still getting used to the roar as it is lol.. When’s the install?

RoadrunnerGTS

Few weeks time as away and workshops closed.

BrianShaw23

I have the Kline inconel cat back exhaust as well. Perfectly happy with the sound as is, wouldn't want it any louder so personally don't plan on headers.

Have a M-Engineering stage 2 tune as well, car is an absolute beast now. Pusing 450-460hp. Launch controls make me a little light headed now, the only other car that does that is my 2019 M5 which hits 60 in 3 seconds.

MaddMike

The biggest difference is not in the sound but that it makes the engine rev easier in a way that's noticeable. I have the Softronic tune and BMC filters (I don't know if those make a difference), but once you get on the power, the tach swings so easily and about 6k, the engine sings.

BrianShaw23

Interesting, I'm tempted for the performance benefits for sure but volume is definitely going to be quite a bit louder above certain rpms. Probably too obnoxious for a daily which is what I use my car for.

Still, might do it eventually. I was thinking about a 992.2 911 for my next car but I don't want to give up the 4.0 naturally aspirated motor, the 3.0 turbo charged engines sound good but not close to the 4.0 NA imo. Only way to get a NA motor on a new gen 911 is the GT3 and those are hard to get.

mc3456

It's funny you mention that because I installed the same mods on my Boxster 25 Years about 80-100 miles before parking it for the Winter and was trying to see if the car felt any faster vs stock. Though it is nowhere as dramatic of a difference as the APR Stage 1 tune with Akrapovic Sport Cats & Exhaust and BMCs on my prior 991.2 C4S, I did notice how much faster this car climbs to redline, especially in the upper RPMs range. The digital speedometer shows the car building speed much faster now, but again, I only have 80-100 miles of seat time since the mods. So far so good though.

RoadrunnerGTS

Also have the ME stage 2. Will run some more logs for ME after Kline install in case anything requires changing again.