SARD Torque Control valve, useless?

[The Last Streetfighter]

How could more back pressure help build boost?

Wouldnt it then slow down the exhaust wheel?

I don't know. But refer here
Explain the lines crossing over...

[abently]

I don't know. But refer here
Explain the lines crossing over...

Putting a 2.5" restrictor in the system will cause exhaust back-pressure to be higher and therefore the wastegate to seal better under low Boost conditions.

[Z2TT]

From that dyno graph I see that there is more power from the restrictor down low, so the Torque control valve may be beneficial after all.

[takai]

Putting a 2.5" restrictor in the system will cause exhaust back-pressure to be higher and therefore the wastegate to seal better under low Boost conditions.

Boost pressure is higher lower in the curve though, its not about the wastegate sealing better. If your waste gate need backpressure to seal then you have issues with the wastegate controller.

[Z2TT]

Boost pressure is higher lower in the curve though, its not about the wastegate sealing better. If your waste gate need backpressure to seal then you have issues with the wastegate controller.

So was the SARD rep correct in the email he sent me back?

[abently]

Boost pressure is higher lower in the curve though, its not about the wastegate sealing better. If your waste gate need backpressure to seal then you have issues with the wastegate controller.

As mentioned in that link....

To be technically correct I would say without MAF datalogging of both dyno runs then that graph is completely useless.

Common sense says along with hundreds of back to back tests says putting in a restrictor does not help low end torque...

If you want to find that out for yourself, feel free to.