RPi Block off Intake Plates... Final Verdict? - BMW M5 Forum and M6 Forums
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post #1 of 39 Old 19th September 2008, 05:28 PM Thread Starter
Rambino
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RPi Block off Intake Plates... Final Verdict?

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..

Your guys thoughts?
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post #2 of 39 Old 20th September 2008, 05:40 PM
///Marshall
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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
proves otherwise.

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.
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post #3 of 39 Old 20th September 2008, 08:27 PM
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My beast feels "beastier" with them in. No apparent loss in low/mid but feel a slight gain in top end, hence beastier

2006 E60 M5 Indy-red, Sepang Bronze, 35% tint, RPI Intake system, SS Sport (Race) Mufflers, SS X-Pipe, Hardwired V1

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post #4 of 39 Old 20th September 2008, 08:49 PM
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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.

Modifications:
  • Engine: RPi / PC Stage 2 ECU Software, RPi ST Underdrive Pulley Kit, RPi Ram Air Intake Kit (Black) & Block Off Plates, RPi SV1 Oil Cooler (Black), M-Sprint Booster
  • Exhaust: RPi GT Headers, RPi Hybrid X Pipe Section 2, RPi GT Section 3
  • Exterior: Vorsteiner CF Vented Hood, RH Type CF Splitter, Upper CF Mirrors, CF Side Skirts, CF AC Schnitzer Style Trunk Spoilers, CF Side & Kidney Grills, Black Powder Coated Lower RaceMesh Grille, CF Pillars, all Roundels in CF, Red Angel Eyes, OEM Smoked Tail Lights, Smoked Side Markers, Brake Calipers Painted in Red with CF ///M Decal
  • Interior: Custom CF Lower Steering Wheel, CF Interior Trim, CF Handbrake, CF Gauges Trim, CF Door Pins, Illuminated Door Sills, OEM Aluminum Pedals
  • Wheels: OEM Blacked Out Rims with Michelin PS2 Tyres (Front: 255/40-19 Rear: 295/30-19), H&R Spacers (12mm Front)
  • Suspension: H&R Lowering Springs
  • Miscellaneous: V-Kool Window Tints
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post #5 of 39 Old 21st September 2008, 03:48 PM
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looks like for the money the rpi setup is king

i am disappointed at the info provided by av8tir on the afe intake which looked so promising
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post #6 of 39 Old 21st September 2008, 10:57 PM
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Quote:
Originally Posted by handdoc View Post
looks like for the money the rpi setup is king

i am disappointed at the info provided by av8tir on the afe intake which looked so promising
+1

Modifications:
  • Engine: RPi / PC Stage 2 ECU Software, RPi ST Underdrive Pulley Kit, RPi Ram Air Intake Kit (Black) & Block Off Plates, RPi SV1 Oil Cooler (Black), M-Sprint Booster
  • Exhaust: RPi GT Headers, RPi Hybrid X Pipe Section 2, RPi GT Section 3
  • Exterior: Vorsteiner CF Vented Hood, RH Type CF Splitter, Upper CF Mirrors, CF Side Skirts, CF AC Schnitzer Style Trunk Spoilers, CF Side & Kidney Grills, Black Powder Coated Lower RaceMesh Grille, CF Pillars, all Roundels in CF, Red Angel Eyes, OEM Smoked Tail Lights, Smoked Side Markers, Brake Calipers Painted in Red with CF ///M Decal
  • Interior: Custom CF Lower Steering Wheel, CF Interior Trim, CF Handbrake, CF Gauges Trim, CF Door Pins, Illuminated Door Sills, OEM Aluminum Pedals
  • Wheels: OEM Blacked Out Rims with Michelin PS2 Tyres (Front: 255/40-19 Rear: 295/30-19), H&R Spacers (12mm Front)
  • Suspension: H&R Lowering Springs
  • Miscellaneous: V-Kool Window Tints
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post #7 of 39 Old 30th October 2008, 01:01 PM
DOUL
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This is one of the best proofs of RPI Block of Plates whp gains: RPi Dyno Dynamics verified, +10 HP w/ Block-Off Plates! [new best bang for the buck!]

Modifications:
  • Engine: RPi / PC Stage 2 ECU Software, RPi ST Underdrive Pulley Kit, RPi Ram Air Intake Kit (Black) & Block Off Plates, RPi SV1 Oil Cooler (Black), M-Sprint Booster
  • Exhaust: RPi GT Headers, RPi Hybrid X Pipe Section 2, RPi GT Section 3
  • Exterior: Vorsteiner CF Vented Hood, RH Type CF Splitter, Upper CF Mirrors, CF Side Skirts, CF AC Schnitzer Style Trunk Spoilers, CF Side & Kidney Grills, Black Powder Coated Lower RaceMesh Grille, CF Pillars, all Roundels in CF, Red Angel Eyes, OEM Smoked Tail Lights, Smoked Side Markers, Brake Calipers Painted in Red with CF ///M Decal
  • Interior: Custom CF Lower Steering Wheel, CF Interior Trim, CF Handbrake, CF Gauges Trim, CF Door Pins, Illuminated Door Sills, OEM Aluminum Pedals
  • Wheels: OEM Blacked Out Rims with Michelin PS2 Tyres (Front: 255/40-19 Rear: 295/30-19), H&R Spacers (12mm Front)
  • Suspension: H&R Lowering Springs
  • Miscellaneous: V-Kool Window Tints

Last edited by DOUL; 30th October 2008 at 01:02 PM.
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post #8 of 39 Old 30th October 2008, 02:46 PM
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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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post #9 of 39 Old 30th October 2008, 03:20 PM
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Nope, Juan you make more with the plates. I have yet to try it though. But 5hp is 5hp...

2007 M6 Cab, Silverstone Silver, Indy Red Full Merino, Fully loaded.
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post #10 of 39 Old 30th October 2008, 03:51 PM
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What does that air hole supply air to?

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?
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