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Old 22-02-2009, 09:35 PM   #1
CMYAU3
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Default intake question

hey guys im putting on a snort kit now with the plenum

but it obstructs this little doo dad.

this controls all these butterfly valves but wtf do they do???

wat would the effects be if i removed the butterflys all together???and the doo dad also

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Old 22-02-2009, 09:45 PM   #2
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They're the butterflies for the short/long runners in the BBM and I believe that doo dad thingy is the actuator for them.

Being turbo, I'd be gutting the BBM and removing that stuff while you've got it apart.
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Old 23-02-2009, 04:45 PM   #3
CMYAU3
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do all the butterflies work like a choke? i dont know what they do.
if i remove them will be a to start when cold and run crap until up to temp???
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Old 23-02-2009, 05:55 PM   #4
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No. Butterflies are used to switch between the runners in the manifold. Long runners at low rpm for torque, then IIRC they switch over to the short runners for more top end power at roughly 3800rpm.
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Old 23-02-2009, 07:06 PM   #5
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ohhh k thanks for that its gud to know
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Old 23-02-2009, 07:27 PM   #6
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No probs! I wanna gut mine if it's not already! Hopefully it's easy to do.
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Old 23-02-2009, 07:31 PM   #7
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Yep, with a turbo they are pretty much pointless. Remove them and do a little porting while you are there.
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Old 25-02-2009, 10:44 AM   #8
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Quote:
Originally Posted by private9
No probs! I wanna gut mine if it's not already! Hopefully it's easy to do.

yep I allready have done it justin!

Quote:
Originally Posted by Russell
Yep, with a turbo they are pretty much pointless. Remove them and do a little porting while you are there.
Don't bother there will be limited or no gains with such a low boost set up.



As for your other thread about changing injectors... a couple of questions.

1. Are you running a aftermarket ecu??
2. Are you running a rise of rate FMU (fuel regulator).

If you are not running a after market ecu the stock computer can't handle bigger injectors without a flash tunner even then the capabilitys are very limited. Also you can run a max of 9psi only as any more the map sensor will shut down the whole system.

If you have any Q's or anyhtingt feel free to PM me and im happy to help out.

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