maybe 15 horse or so if your lucky.
depends on rpm, intake and exhaust, manufacturer,type of fuel etc..
the intake are next to the carb and the exhaust are next to the exhaust manafold intake are .008 exhaust are .012 with the engine warm good luck
The exhaust valve gets hotter than the intake valve.
When the engine is hot .008 intake .012 exhaust or .007 intake .011 exhaust When the engine is cold
I would say it all depends on your intake and exhaust system. I run mine with stock headers, nismo duel rai and 60mm invidia n1 exhaust...runs great with stock headers.. remember, just because it is aftermarket does not mean better...
Upgrade the intake, exhaust, and fuel injectors.
cold air intake and exhaust system
add intake chip from eBay and put an exhaust.
270 horsepower 300 with flowmaster duel exhaust, kn cold air intake, and skunk2 cams.
cold air intake, K & N airfilter dual exhaust
how much u lookin too gain?? Catback exhaust, cold intake, full exhaust.
a mini genrally has about a stock horsepower range of 100 to 130 horsepower if custom intake and turbo are installed they can range from 150 to 230 horsepower.
intake exhaust header kpro turbo supercharger
depends on rpm, intake and exhaust, manufacturer,type of fuel etc..
.004 intake.....006 exhaust
add an air intake and full exhaust system if you havent yet done that
cold air intake and headers with a more open exhaust like flowmaster should gain you at least 15 to 25 horsepower