groundhog

The dyno reading at the wheels is 368.3 PS

Sausage416

The tuner said they were able to achieve from stock 420 hp/420nm to 456hp/442nm.

groundhog

They are using the run down/ towing difference to calculate the AFW number - its calculated. Its a MAHA dyno.

metalone

I would imagine that the no filter one doesn't have holes for monitor therefore would be for ROW not EU. Better ask them to make sure. The high flow version probably will have the holes for the sensor as you would expect no cell code

metalone

As for what I see this has several extensions to bolt-on to all the stock brackets , something that I don't see in every other aftermarket, so despite what @Sausage416 said of being the cheapest one , maybe he got lucky or perhaps is because supersprint has its good reputation for a reason...

Anyway , at least for me , is very important that an aftermarket exhaust component uses all the stock brackets as there's a lot of force and vibration there , so if is not completely stiff and tight, with time you can have issues ..

MG2020

Just took delivery about a week ago. I love the car and the sound with valves open is pleasant. Not a fan of the valves closed note.
- is there a solution that keeps valves open full time
- is there a reason other than noise control for valves being close
- does modification to valve control impact warranty
love the car but the smotherd noise at lower rpm is just underwhelming at takes away from the experience. Thank you in advance for any guidance.

katzndogs

All (3) questions you just asked have been answered on numerous occasions in both this thread and many threads prior to this one. A simple search would do you good.

tdlondon

Yes there are a few solutions. It's been thoroughly covered on this thread: https://rennlist.com/forums/718-gts-...ap-switch.html
In a nutshell, there is the "free" solution which is yank the vacuum lines from the muffler valves and plug them with a screw and zip-tie them to the structure.
Then there are a few add-on devices which will cost between $200 and $1,000 plus installation.

RazzleDazzle

Received my over axle pipes from Soul Performance yesterday. Porsche of South Orlando installed for me this morning. Quick and easy install and they told me fitment was perfect. Sound is quite a bit louder, especially when valves open. For sure the valves are more noticeable open to closed with the pipes. Im happy for now, plan to sit back and wait to see what Soul comes up with for rear mufflers. Install pics and quick drive by. More pics on instagram @ryan_dalziel

DFW01TT

That's a nicely specc'd Spyder sir.

RazzleDazzle

Thank you, yeah it turned out really perfect. Some more pics here also -

Soul Performance

Thanks for posting Ryan, it's great to hear install went smooth at the dealer! Compliments to spec on that car, can't get over how good that red looks

Regards,
John Gaydos

DocMo

Dyno results with Akrapovic OPF deletes only. Impressive

Rennolazine

All these opf deletes should accomplish the same thing. Akra ones are heat shielded and titanium. Should have a nice resonance and roughly same price as others...
im waiting to make a video full kline rear, vs soul resonated race, vs probably just valveless+ opf delete (not sure on last guy’s final exhaust spec but he will prob just have a valve delete in oct when these are modded).

wizee

That’s awesome. Fabspeed also reported huge gains in low end torque when they tested OPF delete + their muffler, but seeing this, most of the gains are probably from the OPF delete. They said torque with the OPF delete (and their muffler) increased by 32 lb.ft (44.5 Nm) at 2400 RPM, at 8 lb.ft 7500 RPM, both of which exactly match this curve.

Wouldn’t surprise me if deleting the dummy OPF also improves fuel economy due to less exhaust back pressure. It’s a win win for performance, sound, and the environment.