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Plenum Install

guesty

By guesty,
in Tasmania

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guesty Proficient

guesty

Posted
Posted

just wondering if anybody has fitted a greddy style plenum to their rb25det? Im having a bit of trouble with the hoses. also could somebody please take close up photos on their engine bay of a r33 gtst? If any of you are in Burnie feel free to come up and help out.

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Shane_954 Enthusiast

Shane_954

Posted
Posted (edited)

Hey there,

I fitted a greddy plenum to WHITER33's car, the plenum was a little tricky to fit. I didnt end up fitting the auxilliary air control valve, left it off because his car runs a haltech ecu, was able to use the stepper motor for cold start idle up. On the stepper motor it has 2 hose inlets, one runs to the AAC valve, the other to a position infront of the throttle butterfly in the cooler pipe. I simply ran a hose between the stepper motor and the cooler pipe and blocked off the other end of the stepper motor. We ended up fitting an 85mm hypertune billet throttle body. As for coolant hoses etc, i blocked off the 2 small hoses running to the factory throttle body. The top radiator hose fits, just gotta turn it upsidedown or flip it over, you'll work it out. You will also need lengthen you wiring to the stepper motor. The job wasnt that bad to do, but you will appreciate it more once finished. Makes things alot easier.

Edited by shane_180sx
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Shane_954 Enthusiast

Shane_954

Posted
Posted

They only ran hoses to the stock throttle bodies to prevent the butterfly sticking open in very cold conditions, wouldnt bother with the hassle of running them. Then again i wouldnt bother with the stock one after seeing the difference a decent one can make.

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  • 2 months later...
Jamskate Newbie

Jamskate

Posted
Posted
Hey there,

I fitted a greddy plenum to WHITER33's car, the plenum was a little tricky to fit. I didnt end up fitting the auxilliary air control valve, left it off because his car runs a haltech ecu, was able to use the stepper motor for cold start idle up. On the stepper motor it has 2 hose inlets, one runs to the AAC valve, the other to a position infront of the throttle butterfly in the cooler pipe. I simply ran a hose between the stepper motor and the cooler pipe and blocked off the other end of the stepper motor. We ended up fitting an 85mm hypertune billet throttle body. As for coolant hoses etc, i blocked off the 2 small hoses running to the factory throttle body. The top radiator hose fits, just gotta turn it upsidedown or flip it over, you'll work it out. You will also need lengthen you wiring to the stepper motor. The job wasnt that bad to do, but you will appreciate it more once finished. Makes things alot easier.

Don't suppose you took step by step photo's.. I see tons of threads talking about installing these plenums but no one with a really good step by step.. I sure would love to see an install FAQ with step by step pics.

BTW thanks fo explaining that i don't need the AAC.. I've been trying to figure out where I'm supposed to mount it or if i needed to buy a different type.

Thanks

Jam

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Firefrog Collaborator

Firefrog

Posted
Posted

Sorry to hijack, but I see you took your cam gear cover off, I've thought about taking mine off, but was under the impression that the sensor on the passanger side gear was something important that I shouldn't touch, and would need to be re-aligned properly. Could you clarify if perhaps this is easier to do then I assumed? :blink:

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WHITER33GTS-T Veteran

WHITER33GTS-T

Posted
Posted
Sorry to hijack, but I see you took your cam gear cover off, I've thought about taking mine off, but was under the impression that the sensor on the passanger side gear was something important that I shouldn't touch, and would need to be re-aligned properly. Could you clarify if perhaps this is easier to do then I assumed? :D

I just put a little mark on the CAS and where it bolts onto so i could line it back up again. Easy.

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WHITER33GTS-T Veteran

WHITER33GTS-T

Posted
Posted
WHITER33, Are you keeping the weapon and going with the big stalled auto and NOS?? Come on 10z!! Happy boosting!

Yeah will be keeping this for a little longer now as with the power its making its awesome fun to drive but the 18s dont like the way in comes on boost...

Im looking at a direct port NOS kit at the moment and want to get that installed and setup before i get the auto so i can work out what stally i need. A 3lt bottom end is also still on the cards or i could stroke the 2.5

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guesty Proficient

guesty

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Posted

i didn't take step by step photo's either, but am willing to help others fit their plenums. it does start to get a bit tight under the plenum but im so much happier with the overall looks and performance of the engine bay. i can sorce these plenums for around $350 including freight.

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https://www.sau.com.au/forums/topic/156372-plenum-install/#findComment-3107340
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PHaT MR30 Grand Master

PHaT MR30

Posted
Posted
i didn't take step by step photo's either, but am willing to help others fit their plenums. it does start to get a bit tight under the plenum but im so much happier with the overall looks and performance of the engine bay. i can sorce these plenums for around $350 including freight.

If these are those copy ones, are you cleaning out the insides of them? from reports form other members on here there is alot of slag on the inside of them that needs to be ground off (casting defects), other than that they are ok though i think.

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  • 3 weeks later...

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