i had a downpipe, but i know of quite a few guys who have done it and even on stock motors have noticed a notable difference in the spool up and power.
With stage 2 maps, the biggest issue is exhaust gas temps, that is why the exhaust upgrade is needed. obviously removing the pre cat will never be as good as a performance downpipe with a larger bore, but id bet its not to far off. Considering a downpipe will cost you around £500, and this is free, even if it only made 70% of the gains of a proper DP then it'd still be worth it, especially if under warranty
Jopn TFSI on here has fully decatted his standard exhaust, and is about to load stage 2+ revo software on his cupra.
With stage 2 maps, the biggest issue is exhaust gas temps, that is why the exhaust upgrade is needed. obviously removing the pre cat will never be as good as a performance downpipe with a larger bore, but id bet its not to far off. Considering a downpipe will cost you around £500, and this is free, even if it only made 70% of the gains of a proper DP then it'd still be worth it, especially if under warranty
Jopn TFSI on here has fully decatted his standard exhaust, and is about to load stage 2+ revo software on his cupra.