Spell Echo / Chance to Ignite

Does Spell Echo double Chance to Ignite when they are linked together? So I am asking that if I have spell echo linked with a Chance to Ignite skill gem that increases chance to ignite by 25%, does it increase chance to ignite by 50%?

All Spell Echo does is massively increase your cast speed. It has no direct effect on your ignite chance, but it will make you more likely to ignite enemies simply because the increased cast speed gives you more spell hits that are capable of igniting. However, it won't come close to doubling the chance. Firstly, it doesn't double your cast speed. Secondly, even if it did, the chances are independent and thus multiplicative. For example, if you have a spell with 50% chance to ignite, the chance that you'll ignite an enemy after two casts is 75%, not 100%.