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More new products released this time suitable for all 991 GT3 RS models installed with OPF and 991 Speedster
This selection of product allows owners of 991.2 GT3 RS and 911 Speedster installed with OPF to achieve a more aggressive sound and appearance but without swapping their factory exhaust system
All products are in stock and available to order now via the JCR website
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JCR OPF VALVE DELETE KIT
First up, the JCR OPF Valve Delete kit provides a safe way to disable the factory exhaust valves installed in the OPF exhaust system and keep valves locked safely in the open position. The kit also includes a 3D printed valve delete box which has been supplied with our OPF Race Pipes allows the factory exhaust valve to operate as normal whilst safely positioned to keep the car running perfectly and avoid any chance of engine lights
Key Features - Valve Delete Kit
Deletes Factory Valve Function
100% Reversible
No CEL
Pricing & Availability - Valve Delete Kit
£495.00 GBP
Available Now
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JCR OPF TITANIUM TIPS
Secondly we’re also offering direct replacement upgraded Titanium Tips for the factory OPF rear silencer in either Megaphone or Straight design which removes the factory restriction and sound suppressor along with creating a more aggressive appearance to the rear end
JCR TITANIUM OPF TIPS - MEGAPHONE
JCR TITANIUM OPF TIPS - STRAIGHT
Key Features - Titanium Tips
Deletes OEM Tip Sound Suppressor Restriction
100% Reversible
Improved Looks
Pricing & Availability - Titanium Tips
£795.00 GBP
Available Now
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They look great- can you really hear a difference just changing the tips?
Yes, subtle but noticeable. If you check out the stock tips they have a pretty substantial drop in inside diameter and the profile is designed to reflect and reduce the volume.
In combination with the valve delete kit also it makes for a good sound improvement without changing out the stock exhaust
Anyhow I have the GMG on right now and its very loud with no valve option. I might try yours..
Who is referring? Sorry for the confusion, dont know if a post may have been deleted since
Yes we have three options for the OPF cars and the Valved system you have linked above does allow the car to retain the split personality many enjoy. Albeit along with a huge weight reduction, increase in power and that signature JCR sound
Does the valve delete mostly change low rev/throttle sound? Thought it was established that the valves are open most of the time anyway?
Valves open over quite a small throttle opening over set RPM ranges but snap closed the moment that the throttle is lifted and on downshifts and partial throttle or closing throttle applications. They're constantly varying to some degree, of course the valve delete will not make the car louder at WOT but this just adds more sound more of the time.
The tips do add volume as they remove the factory restriction