Anyone here using PSE Decat together with a straight through downpipes !

Any recommendations ? Together with a tune to get rid of fault codes .

 

If you mean using PSE with catless downpipes, yes I have that (Fabspeed catless). I'm tuned on M-engineering, which also gets rid of the CEL's, and allows valves fully open for a pretty good sounding PSE.

 

Would love to hear it. Do you have any clips?

 

Is your car an S? So running around 550 wheel now?

Would love to see some vids too! How is traction?

 

Yup C2S, I'll try to take a vid

Yes it should be around 550-560whp. There is some spin thru 1st and 2nd from a dig but its very controllable, and I have worn out pirelli's. It'll be better when I get PS4S soon.

 

How restrictive is the PSE with valves wide open vs maybe doing what you did with the catless dp's and adding a more free flowing rear section? Will just the decibels increase or will there possibly be some detrimental results of having too much flow aka excessive "drone"?

 

that’s very impressive .

What parts did you change

 

I can’t really tell how restrictive the PSE is, but any aftermarket exhaust would be slightly less restrictive. The major restriction are the cats, so going catless eliminates all of that. Eventually I do want an Akra exhaust and then it’ll probably be the best sounding 992 Carrera setup out there, but that’s $5k I need to wait on.

There is no drone with the catless downpipes with PSE and valves open. I like it a lot for now.

 

PSE is very restrictive. I have sport cats plus Soul’s wide open valveless exhaust with no muffler and the M Engineering tune. I swear that addition to the noise it makes more power because my PDK sometimes complains, LOL

 

“Very” is a relative term. You only get around 10-15 more hp, if that, with a catback exhaust on a tune. The PSE is not the bottleneck power wise.

 

PSE is a bottleneck because the valves don’t fully open even in the “open” setting. Something that has been discussed at length here.

 

Power bottleneck? Can you show me where it shows that? Even Souls website's main and only talking point about their exhaust is about the sound, not power. The valves open/closing are for sound purposes on any car, they don't affect power; M-eng's stage 2 tune can be done without an aftermarket exhaust.

 

^ Why wouldn’t valves affect power? Do they not restrict airflow?

For M Engineering’s Stage 3 tunes and up, an exhaust is “highly recommended” on their website.

Also it doesn’t matter if Soul doesn’t post power numbers. They don’t want to be held to dyno proven gains, I get that.

 

Again, there is no real power difference. Look, I’ve done 0-60 and 60-130 pulls pre-valves open mod and post, there is NO difference in performance numbers.

Stage 3 power levels are much higher and so need to squeeze every ounce available in conjunction with other major mods such as intercooler, which is where an aftermarket exhaust adding +15 comes in. But that’s it. No exhaust is going to magically give you +40 something hp.

Stage 2 was what I was referring to earlier, and at that level there isn’t much benefit. M-eng has even told me this. They said there wasn’t any negative performance with valves open; so certainly they’re not sitting there and saying there’s any noticeable increase either. The power difference between oem valve modulation vs fully open mod, IF it exists, is next to negligible.

 

I am also in the search for downpipes but dont know if to go with soul capristo or akaprovic.