Engine Drivetrain 1st Gen Cooper S Most liked posts in thread: WOT and Code P0108

^^^^ very good point.

Alta it almost fits and works.

 

:cornut: When my Margi(08 R56 MCS/JCWm..........yeah turbo and not S.C. but keep reading please) was throwing that code regularly after rapid decceleration from high speed, the culpret was found to be the 'old silicone Alta intake hose' collapsing as it was not reenforced. Trashed the silicone Alta intake hose(which they don't sell any more) and got the Alta metal intake pipe. NO PROBLEMS SINCE. Is the intake hose no longer round but starting to collapse? Even with the S.C. R53 vs the Turbo R56, that 'Alta Intake' caught my eye. Hope this helps.

Jason

 

P0108 is the following:

Manifold Absolute Pressure/Barometric Pressure Circuit High Input

Having seen this code myself more than once it has been my experience that the MAP sensor on the front of the engine is going bad. At least in my case that has been the solution twice now. The MINI Part # is 12-14-0-872-648.

Last time I had one go south was at MOTD in 2012. Hendrick MINI saved my butt by bringing a part up from the dealership. Much to their credit they allowed me to install the part and test to validate the issue was resolved before I paid for the part.

 

That's a T-MAP code generated in the intake manifold. Could be a faulty sensor, tune related, or obstruction. It is not a lean condition.

 

What size "larger injectors" do you have and who did your custom tune?

If your injectors are not scaled correctly this can happen. I would contact your tuner because they should be able to make the needed adjustments to correct this problem.

You could also pull your Map and T-Map sensors and clean them because they could be faulty or have some oil build up on them if they have never been cleaned or replaced.

 

The R53 does not have a MAF sensor.

 

:cornut: Yes Sir, that's the one. Of course Margi's was a slightly different shape being for the R56 Turbo.:cornut:

Jason

 

I've had no prob with Alta silicone intake hose for 100k miles. Zero.

 

+1, you may be able to clean it & make it last a little longer, but you're prob. just getting lucky here and getting an early warning that it's going bad.

Or (just a wild stab here)

Did you by any chance notice the boost level? A blockage in the CAT can sometimes give you an abnormally high boost level, esp. at WOT, and this could be causing the sensor to " sit up and take notice".

 

This happened to me also, sensor going bad. Replaced it, resolved problem a couple years ago. I run a 17% pulley.

 

Not, with those levels no, prob. the sensor.