Hi Zukie,
When I first bought my Crossfire it was a bit of a compromise due to personal circumstances and it drove a "bit flat" didn't have the response I would have liked. It seemed to get more responsive after I had driven it a few weeks and then I found out about the learning throttle that adapts to your driving style. This is when I really started enjoying the car and realised I had bought a much better car than I realised and am now really happy with it.

The problem with the learning throttle approach is that with any significant motorway or town traffic driving it will assume "sedate" driving style, softening the throttle response. The manual throttle reset, which it sounds like you have tried, temporarily eliminates this problem.

I have also been researching "what next" and my conclusion is that I am going for a Sprint Booster which sounds like it just sharpens up the response, reducing the softer approach to the throttle a bit like a "sport" button on other cars. I am just about to order one from ebay for £157 and got an e-mail yesterday from the seller confirming the model and that it is in stock. It also doesn't affect the warranty which is an important consideration for me.

I'm not sure what transmission you have , mine is an auto.