Most aftermarket exhausts for this engine would likely focus on sound modification rather than significant performance gains. You'd probably find more options for things like a sports backbox (a replacement for the rear silencer) that might give a slightly sportier sound, but won't dramatically boost performance. Even then, availability is likely to be limited.
Before considering any exhaust modification, consider these points:
* Minimal Performance Gains: The 1.4 TDCi is not an engine known for tuning potential. The gains from an exhaust upgrade will be minimal at best.
* Noise Regulations: Check your local regulations regarding exhaust modifications. A louder exhaust could lead to fines or MOT failures.
* Cost vs. Benefit: The cost of a performance exhaust might not be justified by the negligible power increase.
* Warranty: Exhaust modifications could void your vehicle's warranty.
In summary: While a sports backbox *might* be available, expect limited options and minimal performance improvement. A deeper, sportier exhaust note is the primary benefit you'd likely see. It’s strongly recommended to thoroughly research and find a reputable supplier before making any modifications. Focus your efforts on other performance enhancing modifications if significant gains are your goal (though even these might be limited for this specific engine).