I'm goimg to have my installed when the aftermarket exhaust goes on. Makes sense at the point I guess

 

Those of us who have deleted the OPF from our 992 GT3, and also done the Cargraphic Valve Controller, can attest that the sound is excellent -- especially on a bang/buck basis. Nothing comes close.

I'm fortunate to also have a GT4RS and am considering Soul's valved exhaust system. So it's not like I am anti-aftermarket. Far from it.

 

I Have Cargraphic only. How the sound note changes without OPF (deeper? Raspier?)

drone?

Thanks!

 

Deeper - not raspier.
Fuller -- no wail

I would just call the sound deeper and more serious.

 

When you say "fuller - no wail" does that mean it "screams" less without the OPF filters? I love the high pitched wail above 5,000 in stock form. I am scheduled to get the Carrgraphic valve controller and the OPF delete on same day, 4/19. That said, I am slightly on the fence about removing the OPF. I know I don't need more volume above 5,000....its really just below 5,000 where you can barely hear the exhaust with OEM valves at 30% or whatever...and probably the single most annoying thing to me is you can barely hear the engine on downshifts (heel toe or auto-blip) unless you really give it a good press up to 5,000ish. I would love to hear a quick and healthy blip even at 2,500-4,000 on downshifts. Its possible the Carrgrpahic will be all I need and then I can leave the car 100% stock (other than the controller which is a simple reversal if ever wanting to go back to stock).

Anyone done the OPF delete and regret it? I hear it is more volume, like 30% more, but doesn't really change the sound much just a little freer breathing. If that is not the case I need to reconsider OPF delete.

 

I installed the Cargraphic Unit myself and am super happy with the results.
The car no longer sounds like a (restricted) vacuum cleaner under 5500 and after about ten months with the exhaust controller running OPEN 24/7 the car has in fact gotten fuller and louder.
It's sounds just "right" to me.

 

Did you mess with OPF? Or just the controller?

 

Just the controller.
No OPF.

 

Seems the majority here have just done the carrgraphic controller and not the OPF and are very satisfied with the results. I have time scheduled with a shop on 4/19 to do the carrgraphic and initially told them to do the OPF delete at same time but now second guessing. Anyone else do the OPF and can describe either the increase in overall volume or the pitch / tone differences?

 

Just do the OPF Delete. Best decision I made. It is no where close to being too loud. Makes the valved exhaust more purposeful.

Just my two cents, but I am looking at changing my rear muffler because the volume is still not comparable to my 991.2 GT3.

 

Do the OPF…you won’t regret it. The sound is great! I also felt a improvement in throttle response.

 

Either you can remove the OPF filter or get aftermarket headers for more volume/sound. The headers is more costly and may require a tune.

 

I did both the OPF delete and the car graphics at the same time so I don't know how each one impacted the over all sound individually. I just know that the car sounds awesome.

 

I would have done the OPF delete too but ours is monitored here in Australia. Have a Akrapovic rear muffler coming instead

 

Just did the Controller. OPF's still in.
Once you take it out for a drive. You don't need to get into stupid speeds to listen to that engine anymore.
Biggest change is from 2-5k rpm. It sounds amazing.

Also, for those still on the fence. I've watched as many videos as I can of it. There is no "one" video that can capture the difference.
Especially those that are static. In sport mode and in valve fully open mode. I CANNOT hear a discernable difference in idle.
Once you drive off though, the difference is clear and awesome!

Well worth it! Been so bummed coz its been pouring here in Asia.