Oct.9 (GMM) Lotus has sidelined its 'double DRS' system for now.

While Red Bull quickly got its similar concept up and running to great effect with wins in Singapore and Japan, Lotus has been trying for several grands prix to fine-tune its version.

The Enstone based team intended to finally debut it at Suzuka, but engineers failed to get it working properly in free practice.

"It hasn't been easy," technical director James Allison is quoted by Germany's Auto Motor und Sport.

"It's been harder than expected to get it to switch correctly with the limited testing time.

"We will put it aside for now, have a think about it and bring it out again in the young drivers test in Abu Dhabi," he added.

In the meantime, Lotus is ready to test a Mercedes-style 'Coanda' exhaust layout this weekend in Korea, the German magazine reported.

Allison confirmed: "Since the launch of the E20 we have always been working on a Coanda exhaust in the wind tunnel.

"As we have seen that the benefits are greater than our current system, it was clear that we needed to implement it."

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