718 Gt4 exhaust options
Discussion
MannyLon said:
Yes mr R will do. You fellow the herd and I’ll catch ya later 
Nope cargraphic is quality tried and tested in Porsche land, Supersprint is not tried and tested In Porsche circles.I bet you don’t buy one.
As for JcR I was a early buyer as I know Jonny likes to do top notch products from cars we have both owned before.
So I have Cargraphic on one and it’s been on 7years and JCR on another.
Money where my mouth is as normal :-).
Not sure if anyone is aware that Litchfields are about to launch a rear silencer for the 718GT4, I'm told it will be £3k and will add 20bhp, they have just sold the test car so cannot confirm the sound and am waiting for the launch video to see how it compares. It looks good nice neat welding and in S/S.
May be worth a look from you guys, after all he made a pretty good job of sorting his Carrera T
Geoff39GL said:
Not sure if anyone is aware that Litchfields are about to launch a rear silencer for the 718GT4, I'm told it will be £3k and will add 20bhp, they have just sold the test car so cannot confirm the sound and am waiting for the launch video to see how it compares. It looks good nice neat welding and in S/S.
May be worth a look from you guys, after all he made a pretty good job of sorting his Carrera T
Thanks for the up.May be worth a look from you guys, after all he made a pretty good job of sorting his Carrera T
Geoff39GL said:
Twinfan said:
20bhp from a rear silencer alone? 
Thats what he said Will be interesting to see when the launch video comes out..
I asked the view when at Tewkesbury OPC and got the expected official response, but also they said (as I think Twinfan mentioned earlier) that it would only be an issue on claims where the exhaust could have an influence. Therefore a wheel bearing claim, no problem, an engine issue, possible rejection.
Risk confirmed as we all expected.
Geoff39GL said:
I'm told as its after the filters there is no problem, its just a straight swop.
Told by who?Imagine the situation. Buy a 6k exhaust. Drive around happily. Suddenly engine trouble and car’s taken in for inspection. Check data logging and see that engine has been running differently since exhaust fitment.
I’m wondering if it’s better to do the exhaust flap controller and be done with it?
Twinfan said:
There's no way the car/ECU will know the exhaust has been swapped. Most of the back pressure is provided by the cats and GPFs, which are sensored, but after that is just the silencer. No faults will be logged and the mapping will be running within tolerance.
How do you know this?MannyLon said:
Twinfan said:
There's no way the car/ECU will know the exhaust has been swapped. Most of the back pressure is provided by the cats and GPFs, which are sensored, but after that is just the silencer. No faults will be logged and the mapping will be running within tolerance.
How do you know this?Only a problem if you have a fault and the car is fitted with the swopped silencer when in the OPC for repairs
MannyLon said:
How do you know this?
Because I've researched the standard exhaust system and have been chatting to the guys at Ninemeister who are building the replacement silencer that will be fitted to my car in the very near future.If you're keeping the cats and GPFs there's very little difference going to be made to the fuelling by swapping out the rear silencer.
See that Litchfield have released a new box. Sounds really good
https://www.youtube.com/watch?v=Ktc-Sk0aZdc
https://www.youtube.com/watch?v=Ktc-Sk0aZdc
MannyLon said:
See that Litchfield have released a new box. Sounds really good
https://www.youtube.com/watch?v=Ktc-Sk0aZdc
I like that one, it’s a slightly different approach and design.https://www.youtube.com/watch?v=Ktc-Sk0aZdc
I also like that they detailed their design process...
https://www.litchfieldmotors.com/blog/porsche-718-...
Resonance tubes and x-pipe design will help to mitigate unwanted harsh frequencies and drone.
Sounds like a proper Porsche sound.
Edited by TDT on Tuesday 15th December 20:28
TDT said:
I like that one, it’s a slightly different approach and design.
I also like that they detailed their design process...
https://www.litchfieldmotors.com/blog/porsche-718-...
Resonance tubes and x-pipe design will help to mitigate unwanted harsh frequencies and drone.
Sounds like a proper Porsche sound.
Maybe I'm just deaf, I really struggle to hear it stand out on the youtube videos. I also like that they detailed their design process...
https://www.litchfieldmotors.com/blog/porsche-718-...
Resonance tubes and x-pipe design will help to mitigate unwanted harsh frequencies and drone.
Sounds like a proper Porsche sound.
Edited by TDT on Tuesday 15th December 20:28
Well, I am actually a touch deaf, too many hours of headphone use when I was younger. But still. Need to hear these things in person.
Rojibo said:
Maybe I'm just deaf, I really struggle to hear it stand out on the youtube videos.
Well, I am actually a touch deaf, too many hours of headphone use when I was younger. But still. Need to hear these things in person.
You probably need good quality speakers turned up a notch. I can hear the sweet rumble and I’m quite def also Well, I am actually a touch deaf, too many hours of headphone use when I was younger. But still. Need to hear these things in person.
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