(31 Dec 2015, 6:51 pm)South Tyne Lad wrote No its not only the Daimler unit with a Voith DIWA 6 with early gear changes and no kickdowns.
I believe the ZF Ecolife is too heavy duty a box to be on ISBes that's why ADL has never been able to include them in the E200 range.
The ZF AS-Tronic Automated Semi Auto found in the E200MMC is the only ZF Capable of operating with a smaller engine like the ISBe
In terms of ZF, I was referring to the Streetdeck coupled with a 6.7 Cummins Engine which is an ISBe which if fitted to a Streetdeck, would go like a rocket. I don't think Wrightbus (or Volvo for that matter) will revert back to Heavyweight engines but if operators were willing to sacrafise fuel economy with a bigger engine, then I think coupled with a lightweight body that the Cummins 6.7 would be a good compromise.