Convert to replaceable idle air bleeds?

Mattax said

I don't even know what that is!

I bought into Larry Meaux and even more so Calvin Elston's discussions about reversions on the exhaust side. I didn't go for a specific anti-reversion part, but in 2016 went all out on the small diameter tubes right off the head and the getting all the section lengths close to the numbers pipemax indicated. I *think* its helped. Car seemed happier but I didn't have time to try to quantify it. Logger was out, no time to mess with stuff and I needed the car, so just drove the heck out of it. :)

Click to expand...

I looked at several things to dampen some of the pulses the reversion causes. It seemed the shear plate was the best option.

What I'm not thrilled about is I'm out of room and can only squeeze a 1/2 plate in there. I'd rather have a 1 inch but I'd have to leave the hood partially open.

I like these shear plates because they not only have a groove around the holes (which is why I have to modify the top of the intake because it's blocking those grooves) they use a 7.5 degree (IIRC) taper on the holes to control the pressure waves in the plenum.

Again...this is a working theory and it's probable I'm way off the mark here. BTDT many times before, but at this point, it's the only modification I can think of to make it so I can lower the IFR's where they should be.