i mean sometimes ull hear 20hp+ but not really maybe 3-7hp its a lot of talk, i mean it can give u that kinda increase but thats only really if ur engine is really bulit their good def wont hurt better breathing but not worth all the hype, lol on the flip side they look cool
There are some factors to consider here. First off, its a focus with 85k miles you're talking about. Even with the stock intake with that many miles, the motor was bound to soon run its course it seems. The other thing to consider is that it wasn't the intake that could have caused your grief, but the filter you used inline with it. If it's a cheap aftermarket filter like you say, then yeah I would expect things not to go so well after so much time. Next time you wanna do something like that, its best to do some research and find out whats the best way to go.
No Not really, I bought one for my S-10 and I saw a bit of diffrence not much, I'd go with a KN Air Kit. It'll replace alot of your stock Air Housing. Well actually it replaces all of it. More expensive but a lot better buy.