RB Racing Fuel Rail and (bigger) Injectors - BMW Luxury Touring Community
 
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post #1 of 9 Old Oct 8th, 2006, 3:06 pm Thread Starter
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Question RB Racing Fuel Rail and (bigger) Injectors

Anyone bought one??
Comments??

ed early
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post #2 of 9 Old Oct 8th, 2006, 3:24 pm
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Ed, wouldn't you also have to replace the exhaust?
I was looking at the Black hole web site and they sell matching exhausts to match upgraded fuel intake systems.
I know some members had issues with purchasing exhausts from them with very long delays and unkept promises of delivery.
Does RB Racing also sells a matching exhaust?
I wouldn't mind adding a few ponies to the FAt Girl...!

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post #3 of 9 Old Oct 8th, 2006, 3:27 pm Thread Starter
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Smile Been Remus-ized already--

Quote:
Originally Posted by zippy_gg
Ed, wouldn't you also have to replace the exhaust?
I was looking at the Black hole web site and they sell matching exhausts to match upgraded fuel intake systems.
I know some members had issues with purchasing exhausts from them with very long delays and unkept promises of delivery.
Does RB Racing also sells a matching exhaust?
I wouldn't mind adding a few ponies to the FAt Girl...!
---Also looking at the RhineWest chip.
Really looking at the fact that we are "under-size" on the injectors in the current app.

ed early
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post #4 of 9 Old Oct 8th, 2006, 3:32 pm
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Quote:
Originally Posted by early1
---Also looking at the RhineWest chip.
Really looking at the fact that we are "under-size" on the injectors in the current app.
Which brings this question to mind: What gives the '05 and newer 15 more HP than previous models? And is there a retrofit kit somewhere?

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2012 BMW X3 (parts and people hauler)
86 Porsche 911 Cabriolet (my "new" baby)



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For her I walked through the largest desert!
And then she left me... She said I was never home!!!


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post #5 of 9 Old Oct 8th, 2006, 3:45 pm Thread Starter
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From what I gathered--

Quote:
Originally Posted by zippy_gg
Which brings this question to mind: What gives the '05 and newer 15 more HP than previous models? And is there a retrofit kit somewhere?
--cams, electronics, timing and--- I'm sure the gurus will fill in the rest.

ed early
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post #6 of 9 Old Oct 8th, 2006, 3:47 pm
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I was told bigger fuel injectors and updated Motronic.
Didn't know about different cams!
Then again I asked Honda of Hollywood when I was still a customer...

Gilles & Kathy
BMWMOA# 154719
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post #7 of 9 Old Oct 8th, 2006, 4:14 pm
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Quote:
Originally Posted by early1
--cams, electronics, timing and--- I'm sure the gurus will fill in the rest.
Larger throttle bodies also. Not sure the injectors are different. Injection volumes are controlled by the pulse length of the injection signal from the Motronic. Larger injectors are usually not needed unless considerably higher volume is needed because of other upgrades than can be done just with longer pulse lengths. In cars, installing only larger injectors does nothing, as the injection timing will just be reduced by the ECM when the mixture difference is detected by the O2 sensors.

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post #8 of 9 Old Oct 8th, 2006, 6:05 pm Thread Starter
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Question With that in mind--

Quote:
Originally Posted by dshealey
Larger throttle bodies also. Not sure the injectors are different. Injection volumes are controlled by the pulse length of the injection signal from the Motronic. Larger injectors are usually not needed unless considerably higher volume is needed because of other upgrades than can be done just with longer pulse lengths. In cars, installing only larger injectors does nothing, as the injection timing will just be reduced by the ECM when the mixture difference is detected by the O2 sensors.
already having a Remus and the fact that the RhineWest cam plate did not help on the 2000 it was tested on---
A consideration would be a 2005/6 injection system along with a RhineWest chip and tuning by Hank, theoretically --the '00 would be very close to or even more than the '05 hp.

As you may or may not have guess , I think I have a crack in the plastic injector rail.
I have an intermittent fuel leak , hard to find, TupperWare is about to come off again.(Noticeble when cold, smell, occasional drop,gone at operating temp, by the time you get the skin off.)
The looks of the RB metal rail caught my attention. That along with previous discussions here about the injector duty cycle, the thought of larger injectors was not at all unpleasant and--- of course the aspect of eventually adding the turbo---dreams you know how that goes--

ed early
Life is a Blind Curve , Just Ride It, Low and Inside
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Last edited by early1; Oct 8th, 2006 at 6:10 pm.
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post #9 of 9 Old Oct 8th, 2006, 6:23 pm
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They replaced the pistons with a RS piston as well. I was told that the RS piston is forged and the earlier LT piston was cast. So the change must have been made for a reason? Also heard that the earlier LT piston had a flat top and the RS piston is slightly convex. Never been that far in to confirm but the part number for the RS pistons and the 05 and up LT are the same.

May we never find the end of the road!

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Quote:
Originally Posted by early1
--cams, electronics, timing and--- I'm sure the gurus will fill in the rest.
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