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Autotecnica Rb25 Pelumn Chamber

Mr Jollwah

By Mr Jollwah,
in Engines & Forced Induction

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Adriano Grand Master

Adriano

Posted
Posted

They arer the same part as the cheap Greddy replicas on ebay for $200. There is another thread on this, poor casting quality untested performance gain. IMO people making enough power to need an upgraded inlet manifold(over 300rwkw) have spent enough money that most wouldnt skimp on this, they will mostly be fitted to cars that dont get any benefit, only loss in low/midrange torque

Mr Jollwah Community Regular

Mr Jollwah

Posted
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Posted

Was thinking of shorter intercooler plumbing, tho poor casting quality has most likely put me off. you get what u pay for I suppose. Might be usefull for RB30DET for bonnet clearance. But if you can afford build one of those u'd just buy the Greddy manifold.

Slide Grand Master

Slide

Posted
Posted

We have used 2 Greddy copy plenum's on Rb25's now with no problems at all.

Injectors seal fine and surprisingly it lines up to the head quite well with a little less then 1mm overhang in some places.

Devils_Advocate21 Mentor

Devils_Advocate21

Posted
Posted

Slide id be happy to know about the results you have had with the greddy copy ones and how long have you used them what power you have got with them what the flow on them are like and what boost pressures you are running through them?

Slide Grand Master

Slide

Posted
Posted

1st

One of our standard highflows on a RB25 in an S13 Silvia.

18 psi of boost making 265rwkw.

Coping fine after 3 months

Nismo 555cc injectors

Bosch 040 pump

2nd

GT30R-IW on a RB25 in an R33.

18psi of boost making 278rwkw.

Coping fine after 1 and a half months.

Nismo 555cc injectors

Bosch 040 pump

Plug in Link G3 ecu's were used with both and individual injector duty was the same across all 6 so there were no noticeable pressure differences at this rate of airflow. :)

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