Ok yes i'm a newbie when it comes to modifications but even after reading other threads and trying to research it, i still don't understand what "boost" is. Can someone or some people explain what it is and what it does? Greatly appreciated

 

Its to do with Turbocharged/supercharged vehicles.

Mini Coopers= No boost
Cooper S/JCW/GP= Boost

 

Check out some info on Turbo chargers, forced induction, super chargers. Not being rude, just some key terms to help out. Videos are also a helpful source of information.

Hopefully that can get you a good starting point

 

Ask Google or wiki....
Some good descriptions...

 

Turbo boost=positive manifold pressure in engines=forced induction=efficiency

 

Or slang...
Boosting a car=stealing a car....

 

yeah typed "boost in cars" and it came up with results for boosting cars

 

Air that is introduced into the motor for the combustion process is boosted, or pressurized to a pressure higher than that of atmospheric pressure.

 

Ok so after a quick trip to wikipedia boost refers to, im guessing, the amount of air pressure greater than atmospheric pressure going into the engine?

 

So what is the average boost on a stock turbocharged r55?

 

And how exactly does boost create more power?

 

Maybe this will help you to better understand boost.

http://auto.howstuffworks.com/turbo.htm

 

Great article, very informative Braminator

 

I hope it makes more sense now.

 

I'm trying to figure out what the average boost would be on my stock clubman s, anyone have any data or idea on what it could be?

 

I thought I read about 14lbs on here somewhere

 

approx 11.6 psi.

 

And what kind of mods increase boost? For example, air discharge pipes, CAIs, charge pipes etc etc?

 

None of those. Boost pressure is controlled by the ECU. Getting the ECU tuned is what will increase boost pressure.

 

Ahh I did not know that, i saw a couple people saying mods helped with boost pressure so in my mind i thought mods add boost, silly me

 

This will help

 

Remember that as you increase boost (pressure) you increase stress on your engine, increase it too much and you start breaking stuff.

Using an OBD scanner and an iPhone app I read a max boost of 13 psi. Don't know the accuracy of the measurement though.

 

+1

 

And is there a certain equation or rule of thumb as to how boost increases performance such as in horsepower or throttle response?

 

Some people claim that bolt on mods help with the turbo spooling faster (sooner), that's debatable. Mostly it's sound and bling.