I heard from some ppl said that aftermarket intake will screw up your MAS, the turbulence will throw the MAS sensor OFF, and causing the ecu to make the engine running lean so.

 

No. I'm not the one to explain why, there are many others on NAM who will chime in and do that. But until reinforcements come, just know that someone gave you bad information. There is no way a CAI will harm your engine.

 

Well, there is no MAS or MAF (or any other abbreviation for a Mass Airflow Sensor) so, there is nothing to screw up. That said, if an intake lets in more dirt particles than stock, it can't be good for the engine. It's probably a good idea to inspect the backside of your throttle body from time to time to see if it is accumulating dust from poor filtration or air leaks.

 

OH, we don't have any MAS in our cars??

 

the MINI uses a speed-density air metering system that uses a MAP (manifold absolute pressure) sensor (actually two in the case of a MCS) which does not measure the air flowing through it. Rather, it senses the pressure in the intake manifold, and this info, combined with the air temperature in the manifold and the engine RPM is used to determine the airflow into the cylinders.

The MCS uses a MAP sensor installed just after the throttle body along with a combination temperature and MAP (TMAP) in the intake manifold. Neither of these is very susceptible to being fouled by dirty air, unlike a flow-through hotwire or shutter MAF (mass airflow) sensor.

 

I have a wideband air/fuel gauge in the car.... this car runs anything BUT LEAN...... even with nitrous at WOT....

 

 

Hi Guys, Regarding induction kits,there are 2 things we need to achieve on the CS :
One is the coldest air possible into the SC. And the other is minimum possible pressure loss .
Regarding air temps, due to the massive increase in air temp from supercharging and a puny intercooler is never going to be too cold when it arrives at the engine!(ok I know england isnt in the Arctic circle).
Regarding pressure loss unlike a turbo car where the turbo is rarely maxed out (ie there is exhaust gas to spare going through the wastegate) we need to ensure the pressure entering the SC is near ambient pressure .
If it goes in at say -1.5 psi youre going to get around 1.5psi less coming out of the SC. One of the best high prsesure zones (on any car)is at the base of the windscreen ,make a large hole through the plastic scuttle into a new & much larger airbox with a twin skin alloy shield and you wont get any colder than that. In order that we achieve min pressure loss a true 360 degree rolled edge rampipe should be used and must extend around half way into the airbox ie not with the lip flush with one face. Regarding the360 deg lip ,this can only be produced by machining the whole trumpet from a solid alloy billet.(expensive but worth it) The norm is to produce a 'spun trumpet' which has a very 'un-flow
friendly' undercut on the outside.No air can work its way around into trumpet from behind it.( as a true 360 deg would achieve.)
Finally the element surrounding the trumpet should be invisable to the rampipe. For this to occur element should be as large as possible and corrugated to increase 'size 'furthur. Also it should allow air to enter it (& the rampipe) from the sides (entire circumference) the front and the rear.

 

Let's keep it civil please...

 

my post back to him was civil....

 

Hehe i love the freedom of speech. Don't you Rojo?

Conflicts are to be sweeped under the rug on these forums!

 

I didn't take it as a conflict... I guess my toughened Marine Corps tested skin is thicker than most