Originally Posted by ksfrogman
I'm posting on here what I wrote to you in my PM.
The stalling issue occurred a couple of times early on, but hasn't in quite awhile. Either my car has adapted with timing/fuel adaptations, or I have changed the way I drive my car. I don't ever go from 55+ to neutral.
I'm not sure what caused this, but I suspect the increased free flow of air decreases the vacuum pressure more abruptly during quick changes from higher to lower engine rpms, but temporarily, which exerts control over the idle rpm.
Hey thanks for your reply/comments frogman
After you said that the increased free flow air might be exerting control over my idle rpm and stalling my car, I tried to reduce/shorten my lower air ram intake. After doing so, I no longer have any stalling issues
The fastest I tried cruising in neutral (without the car stalling) is around 85MPH and the RPM stayed at 700
In the picture below, the white tube is what it used to be and the black tube is what it is now:
I guess before, my ghetto custom lower air ram intake was too close and it's producing too much airflow (which most likely is what causing my car to stall when cruising in neutral at speeds more than 55MPH).
In either case, this is really not an issue because I'd never cruise in neutral at those speeds
So this Gruppe M replica is really great y'all
Go get yourself one for less than half the price of the original one
Here's a photo of the top side of the replica intake:
Here's some photos of the rest of my ghetto custom lower air ram intake
Here's how it looks like in the front (I have a kerscher front bumper).
This is the bumper's lower right grille. You can see the lower air ram intake (the round hole in the middle-right side of picture) and the brake cooling air intake (left side of the picture that has some orange/yellow light):
Here's the bumper's lower left grille. Obviously no air ram intake, only the air intake for brake cooling (highlighted with blue cardboard):