So I have the RPi intake scoops on. I also have the RPi Block off plates that close the bottom hole in the factory intake box..
Im wondering if the block off plates really make a difference.. I know by closing them off, it creates an even great vacuum inside the box.. Im just not sure if the ECU is happy with this setup.. When I have them in, it feels like a stronger grunt and perhaps a bit more torque, when i have them out, it feels like the car revs happier and perhaps there is more up top.. its really hard to tell if its worth it to keep them in or not..
My opinion is go with the plates for slightly better dyno numbers...maybe
5hp/5tq?. On the dyno there seems to be a benefit. On the streets
it's too negligible to make any significant difference...that is until someone
I've been running with the plates for a while now. I had taken them out
and didn't really feel any difference but my dyno butt doesn't work very well.
They are in there right now but I don't really think about them.
Hey Rambino, RPI has tested the Block Off Plates and they can give you an estimated 5-7 whp in the range of 4500-6800 rpm. I'm very confident with the RPI's engineering and I don't think that your ECU is unhappy with this set up. May be RPI can give you a more comprehensible explanation.
You have the sole right to inquire about this subject. Personally, I believe that a simple low-priced mode like the Block Off Plates that can be easily removed at anytime is quite an impressive mod to actually give you an approx. 5-7 whp gain.
My verdict is to keep them & forget about them unless you're really uncomfortable with them.
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Someone correct me if I'm wrong but do you make the same rwhp gain without the block-off plate.
I thought the gains are made with the plate.
Reason being, I use to have the ram air funnel behind the grills that came with the Gruppe M intake. I removed the intakes but kept the CF funnel which diverted more air supposedly to the boxes but it never showed any rwhp gains. It was a useless piece.
Now it's gone because of the ASR intakes.
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I tried searching and couldn't find the answer in a RPI Block-Off thread. But doesn't that hole supply air to the brakes?? I thought I had read that about a year ago when people started talking about the scoops.
My desire for additional cooling on the brakes of a 4,100 pound car trying to stop from 150mph would trump my need for 10 extra horsepower in a 500hp car. But that just applies to my needs and is not a shot at anyone here. And maybe I'm wrong about what that hole is for?