Stillen supercharger long term reports

Originally Posted by kellyefields

the bumper was on and this was with the stock bumper not the one I have now. as far as a pic of it think of a piece of paper. fold it 3 inches from the top, then fold it again 5 inches from the first fold, hold it up and you should have a U shape. (not exact numbers just an example) take it and slide it up the front side of the crash bar and this is where you are going to attach it. the back is just free. the sides are left open to allow air to be sucked in when needed. Place it so the bottom covers the bottom of the first filter this is where I assume the problem is because it gets the most direct air flow. the top of the filters do not need to be covered since they have the plastic tops that will deflect any direct air. as long as the bottom covers the bottom of the filters it will work. Once I take the bumper off in the next couple of weeks I will post a pic.

Originally Posted by Osiris

Yea will need a pic. The problem is that the shroud that i have on mine sounds a lot like what you are describing, yet i still have the issue. So i need to compare the dimensions and placement of the two.

Originally Posted by irondoc

Right, sounds like just a larger shroud. Less turbulence altogether.
I think the real problem probably relates to the MAF's being out in front of the radiator and a larger shroud being required to further dampen turbulence at least at the MAF's.

Originally Posted by dansracing

I wonder if the different types of noses on these cars will make differences in the MAF performance?
It sounds like the shroud just deflects forced air from hitting the filters, mainly the bottom one and forces the SC to suck calm air.

Originally Posted by irondoc

As I understand from my communication with Stillen, reducing turbulence at the filter is only important as it may reduce turbulence at the MAF's. If you look closely at the kit the distance from the filter attachments to the MAF slots is less than 2 inches. I believe this set up is unique in the world of 370Z CAI's.

When my car ran without the shroud it would stall on decel (clutch in or in neutral) - every time. The shroud stopped the stalling but now there is this driveability problem. Of note the included Stillen shroud does not fit on the 2013 model (sport touring) so it had to be heavily modified.

I think I will have to do some work this weekend and make a much larger shroud to completely shield the filters and MAF's.

Originally Posted by irondoc

If you look closely at the kit the distance from the filter attachments to the MAF slots is less than 2 inches. I believe this set up is unique in the world of 370Z CAI's.