gt3 exhaust vacuum Q
01-22-2019, 05:09 AM
#1
Advanced
Thread Starter
gt3 exhaust vacuum Q
on the GT3 with PSE, when you push the PSE button ON in the cockpit and the LED comes on, is the vacuum turned OFF and the car goes a bit louder now ?
in another word, is the vacuum usually applied constantly when the engine is ON to keep the valve on a position to divert the gas to muffler on sides instead of straight to center muffler ?
james R
still tinkering with IPE ext on new GT3… (trying to just disconnect the OEM vac lines from the PSE to keep it open/LOUDer all the time….
in another word, is the vacuum usually applied constantly when the engine is ON to keep the valve on a position to divert the gas to muffler on sides instead of straight to center muffler ?
james R
still tinkering with IPE ext on new GT3… (trying to just disconnect the OEM vac lines from the PSE to keep it open/LOUDer all the time….
01-22-2019, 07:38 AM
#2
Burning Brakes
Yes. Actuators are spring loaded to keep valves OPEN. I.e. vacuum is needed to CLOSE them (and divert all gases through side mufflers and top entry of center muffler).
02-24-2019, 10:31 AM
#5
Race Director
With PSE on your exhaust should sound slighly different at idle but not becessarily so obvious. When you rev it a little it should be obvious. If one of the clamps was loose and it popped off it should be fine to drive but DRONE would be quite apparent.
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02-24-2019, 11:09 PM
#8
im having problems with my valves too. 1.1 RS
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
02-25-2019, 01:19 PM
#9
Addict
Rennlist Member
Rennlist Member
im having problems with my valves too. 1.1 RS
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
02-25-2019, 02:23 PM
#10
Race Director
im having problems with my valves too. 1.1 RS
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
i think they are faulty. the exhaust goes really loud and drones alot for no reason, then goes quiet.
then at low speeds again, its burbling alot. Just changes randomly. Not pressing the exhaust button.
Happens when the button is on & off just randomly.
I checked the lines underneath, both are very secure. everything else under there looks normal and tight.
Are these valves a common fail in general?
Faulty exhaust valve/s you guys think?
02-25-2019, 09:50 PM
#11
It does respond to the button on startup yes. But not in its usual way.
Its as if ONE of the valves is fautly.
Im going to try my best to get some comparison videos and post them. Thats the only way i will be able to support my claims. Its so hard to explain in text.
Its as if ONE of the valves is fautly.
Im going to try my best to get some comparison videos and post them. Thats the only way i will be able to support my claims. Its so hard to explain in text.