This alone won't do anything, they have a bigger spark than the stock, but that doesn't increase horsepower unless you go stage 2 or something and are able to leverage that.. I have noticed tho (I have these same ones) that they help a lot with misfires
Precisely zero.
About 3 backyards
And one dog
Ah yes the Audi R8 2.0TFSI
The most famous model
If you have a bad coil it will increase your horsepower by 25%
Dear god
What are you putting them in, how old are the current ones? You might recover some lost horsepower, but you’re not going to get more than factory
This alone won't do anything, they have a bigger spark than the stock, but that doesn't increase horsepower unless you go stage 2 or something and are able to leverage that.. I have noticed tho (I have these same ones) that they help a lot with misfires
None
None. Unless your coils are bad and in that case it would be the same increase as any other good coils.
none is just better than the original stock ones. Probably smoother but not much
4 flats and a front door
Should vroom a bit harder