I have to say im very excited about it all, just a very slight concern over Revo rempas and their impact on reliabilty/warranty
This one is quite simple, although you may not like it....
Warranty - You have just changed one of the biggest components of an engine, the ECU! Seat loaded the ECU software onto their cars based upon what they think is the best compromise between performance, economy and reliability. You have just changed this to get more power, which means the other areas will suffer as a result. You car is now making more power than it did before, so it will be under more stress than before. In the eyes of Seat, this is enough to void the warranty.
HOWEVER... many dealers wont check the ECU software, especially when it comes to servicing it. The only time you would get found out is if they had to check or modify the ECU software for any reason. Or perhaps if they were trying to fault find a
problem you're having, and they think the ECU might be to blame. IF they find out you have remapped the car, thus changing the ECU, they may take the easy option of blaming this and sending you on your way. Yes, this isn't always likely to happen. And Yes, many people will never have warranty issues with a remapped car. But some will, that's undeniable. It's a risk that only you can decide if it's worth it.
The way around it.... buy a switchable remap, such as Revo with one of their SPS devices. This way, should your car need to go into the garage for any reason, you can revert it back to stock
Reliability - As above, you have remapped your ECU to gain more power. More power = more stress on the engine. More stress on the engine = a shorter life span. Also, more power often has a habit of finding any little existing fault with an engine and highlighting it to make it worse.
HOWEVER! Do you drive your car around at full throttle 100% of the time? No? Didn't think so. Most (sensible) people tend to drive pretty normally and tamely most of the time and only really open it up when the road and conditions allow. So most of the time your car will be under no more stress than it would anyway.
A remapped car driven like this will be much more reliable than a standard car driven within an inch of it's life, for half of it's life.
It's a risk. There are Pros and Cons of course. But overall, if you approach it properly and with all the facts, I think it's a risk worth taking. I'm guessing you do too, or else you wouldn't even consider it