The sound in city driving and startup is fantastic too which makes for a good DD. Over 5000 is excellent. The whole rev range has great metallic note to it. Car just feels a bit more exotic sounding.

 

Yes!

Did you check the outside diameter of the muffler at for the one that's a problem? Just curious if it is different than the one that fits well. Also I think Jeff Jones said he really had to crank his to keep it tight.

 

Agreed, I think moderately more volume above 4k. Not obnoxious, but definitely very noticeable. For me, vastly improved tone and specialness. I love it.

For me, I actually love the low-rev sound as is as well. I agree that it is not loud or theatrical, but I want that when driving around suburban neighborhoods on Sunday mornings. I do think that below 4k, vs stock or stock+valve controller, it sounds much more smooth, refined, and special. Its got a slightly higher pitch even at low RPMs. Immediately after I installed it, while I was waiting for the oil to warm up below 4k, I felt it was very different and more exotic. But, I agree with you, if you are looking for theatrics below 4k, maybe you want the headers, or maybe more of a race exhaust.

 

For those that have the 200 Cell Headers, have you noticed any yellowing/black residue on the rear bumper?
I know this can happen with open headers, which would be a huge NO GO for me if the 200 Cell version has the chance to do the same.

 

I have the Kline 200 cell headers and have never noticed any black dust or yellowing? How or why would this happen? Are you thinking sulfur deposits? I don’t think this is an issue…

 

Its a fairly common issue on cars with cat-deletes. I caught it early enough on my F82 (Alpine White) with full cat-deletes (primary/secondary), I was able to polish it out, followed up by doing a full correction to the car w/ceramic and the problem never returned. My thought is this could be an issue if/when I opt for the headers, as the cell counts are less than OEM Headers, and paired with the Kline OAP/Back box combine for even less filtering.

Im not sure what the yellowing/black soot is comprised of, though I think the additional heat given off with a less restrictive exhaust system only aids in these things being baked into the bumper. All I know is they can be damn near impossible to polish out if not corrected in time.

Yellowing - possibly heat related??
Blackening above the exhaust tips is definitely from deposits passing through a less restricted filter.

 

I can see it being a problem with cat deletes as you have all the unburnt hydrocarbons coming straight out the back.

By the way, a 200 cel cat doesn't necessarily mean dirtier emissions. Many of them are CARB compliment, which is hard to do. I'm not sure about the Kline. I have it on my SB and I haven't noticed anything.

 

All this talk makes me want the 200cel headers, damnit. Especially the comments about it not being loud enough down low with the OAPs/backbox setup.

 

It is pretty subjective - I would recommend starting with the base system and living with it for a while, especially if you don’t even have the car yet. IMO it is a very balanced system with 2 of the 3 pieces being changed. I would not want anything more!

 

Maybe it's just me, but has anyone else with the stainless OAPs and backbox noticed that the exhaust sound from inside the car sounds a little "muffled" instead of "raw" at lower RPMs? No problems at higher RPMs.

Other people talk about no drone, but I get some around 2,500 RPMs.

I'm really on the fence with the headers. I want the raw sound, no drone and maybe a little more volume, but don't know if I'll get all 3 and if it's worth the extra $3,500+. I also don't want to push the volume too far in the wrong direction. If anyone in the DC/MD area with a full system is willing to let me listen to it, please let me know.

 

I'm trying my best not to get ahead of myself

...and failing spectacularly.

 

With the top up and valves closed ya it isn't going to sound "raw", I mean the sound has to travel through the muffler(s) and through your fairly well insulated top. What exactly are you hearing at 2500 RPM?

 

I definitely don't have drone at 2500rpm. There is some very slight resonance there, but certainly not something I notice unless I am trying to find it. It is not an issue and certainly less in that range than OEM + VC. I am CGTS with Kline SS OAP+Rear, so Spyder may be different.

 

+1, not drone...it's resonance. didn't know what drone mean until I tried some other setups and they were brain-damaged. lol

 

Mine is a Boxster GTS and I should've mentioned that the "muffled" sound is with the valves open and top up or down. It's only below about 5K RPMs when not really getting on it or at a steady speed. Over blipping while heel/toeing downshifts sounds amazing! and so is the sound above 5K RPMs! Really, it's just the sound below 5K that I think could use some improvement. It's really not that big of a deal, but it is noticeable, to me, which is why I'm having a hard time justifying the headers. I would like to hear somebody else's full system before actually committing to the headers, though.

Good point on the resonance. Maybe that's what it is and not drone. I'm not sure, but just assumed it was drone. Around 2,500 RPMs, there is a distinctly louder tone coming from the exhaust that can be pretty annoying if cruising at that RPM, top up or down. That's about the only time I like to close my valves.