JCR // 718 GT4 & Spyder - TITANIUM VALVED RACE PIPE
#197
Instructor
@kj71109 Is this the full system including manifolds, OAP and race pipe? how is sound level cruising highway?
This is OEM headers(manifolds), then GT4 race pipe with no silencers or cats. My System: https://www.jcr-developments.com/por...-(non-silenced)
Cruising at 70 is tolerable in 5th gear. 6th is too much drone. 55 in 6th is also tolerable and not bad. There is a pretty strong resonance on startup that is very drony around 2k RPM, but that soon goes away after cold start is done.
I took much better videos yesterday that I will be posting today.
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YMGT4 (07-12-2021)
#198
Burning Brakes
This is OEM headers(manifolds), then GT4 race pipe with no silencers or cats. My System: https://www.jcr-developments.com/por...-(non-silenced)
Cruising at 70 is tolerable in 5th gear. 6th is too much drone. 55 in 6th is also tolerable and not bad. There is a pretty strong resonance on startup that is very drony around 2k RPM, but that soon goes away after cold start is done.
I took much better videos yesterday that I will be posting today.
Cruising at 70 is tolerable in 5th gear. 6th is too much drone. 55 in 6th is also tolerable and not bad. There is a pretty strong resonance on startup that is very drony around 2k RPM, but that soon goes away after cold start is done.
I took much better videos yesterday that I will be posting today.
#199
This is OEM headers(manifolds), then GT4 race pipe with no silencers or cats. My System: https://www.jcr-developments.com/por...-(non-silenced)
Cruising at 70 is tolerable in 5th gear. 6th is too much drone. 55 in 6th is also tolerable and not bad. There is a pretty strong resonance on startup that is very drony around 2k RPM, but that soon goes away after cold start is done.
I took much better videos yesterday that I will be posting today.
Cruising at 70 is tolerable in 5th gear. 6th is too much drone. 55 in 6th is also tolerable and not bad. There is a pretty strong resonance on startup that is very drony around 2k RPM, but that soon goes away after cold start is done.
I took much better videos yesterday that I will be posting today.
#200
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Sound level and drone are incredibly subjective. We have guys running full race pipes on DD's with zero complaints of drone, other owners out there who think / believe / feel that even the stock exhaust drones...
We offer a huge range of choice for each model so I do feel we have a solution for everyone out there
JC
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rp2000r (07-13-2021)
#201
Burning Brakes
Worth noting you had a completely different combination of parts to those mentioned above
Sound level and drone are incredibly subjective. We have guys running full race pipes on DD's with zero complaints of drone, other owners out there who think / believe / feel that even the stock exhaust drones...
We offer a huge range of choice for each model so I do feel we have a solution for everyone out there
JC
Sound level and drone are incredibly subjective. We have guys running full race pipes on DD's with zero complaints of drone, other owners out there who think / believe / feel that even the stock exhaust drones...
We offer a huge range of choice for each model so I do feel we have a solution for everyone out there
JC
Thankfully I also just got a DD which is the complete opposite of my GT4 fortunately
#202
Instructor
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JCR-Porsche (07-13-2021)
#203
Instructor
In your opinion... I don't notice drone when I was driving my GT4 daily, including one-hour long trips on the freeway. Even in fuel-saving mode the odd sound never bothered me either. Honestly sometimes I wonder if I just got used to it or am getting deaf, but the exhaust and road noise are no longer a big deal to me. Do you still think i would notice the drone with the super light race pipe? I would probably do the sound tube delete-thing as well.
Thankfully I also just got a DD which is the complete opposite of my GT4 fortunately
Thankfully I also just got a DD which is the complete opposite of my GT4 fortunately
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josephr25 (07-13-2021)
#204
RL Community Team
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kj71109 (07-14-2021)
#205
Instructor
Looking to add valved non silenced race pipe to my Akrapovic OAP…. Does anyone have videos to share with the valved race pipe (non silenced) and OAP deletes?
TIA
TIA
#206
Finally arrived today. Now I just need a car to put it on (2 more weeks!)
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josephr25 (08-17-2021)
#207
Mine also arrived, need to get it fitted!
Cheers,
Harry.
Cheers,
Harry.
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josephr25 (08-17-2021)
#209
Mine drones a bit too much at the usual frequencies. I would be interested if the new owners could tell me if they feel the same (knowing that there is a bit of subjectivity here). I am yet to try the sound-thingy disconnection.
#210
RL Community Team
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The sound-thingy makes a lot more difference for the GT4 then it does the Spyder, also depends on the rest of the system, OAP and Headers.