AMS EJ25 Intake Manifold Reverse Rotation
Subaru Models (inc. 2002-2014 WRX / 2004+ STI)
Product Resources
Features & Product Details
RallySport Direct proudly carries performance products brought by you by the record holders at AMS Performance.
Here, you are looking at the AMS Performance EJ25 Reverse Rotation Intake Manifold. This manifold has been designed for those looking for the right intake manifold to accommodate big horsepower setups. AMS utilized computational fluid dynamics software and the result is a larger plenum size of 4.5L for more top-end power, along with CNC machined bellhorns which act as internal velocity stacks which will allow for a broader power curve and high RPM horsepower capabilities.
FEATURES:
FITMENT NOTES:
Specifications
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QUESTIONS & ANSWERS
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Q: Reverse manifold TSUNAMISTI 2 years ago
I previously asked a question about using your ams manifold in the reverse position, I know the ams reverse manifold doesn't have an upward angle to clear my alternator but the other model appears to have an upward angle that I need to clear the alternator. Any thoughts on fitment? Thank you
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1 of
1 people found the
following answer helpful
A: The reverse rotation intake manifold requires an alternator relocation and A/C delete, it is not a direct bolt in and requires modifications. Trying to modify the standard intake manifold in to a reverse mount would also require modification. We have not done any fitment testing.
Lane H. @ RallySport Direct 2 years ago
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Q: Reverse manifold fitment TSUNAMISTI 2 years ago
I currently run the stock subaru sti manifold reversed with the alternator in its lowest location and with a 19mm spacer under the manifold. The stock manifold throttle body is angled upwards allowing it to clear the alternator. Does your reverse manifold throttle body inlet have a similar upward angle? 2013 subaru wrx sti. Thank you
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1 of
1 people found the
following answer helpful
A: The reverse configuration actually appears to angle down.
Lane H. @ RallySport Direct 2 years ago -
1 of
1 people found the
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A: Here is the reversed manifold.
Lane H. @ RallySport Direct 2 years ago
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Q: Stock head fitment Jacob2 years ago
Do the heads need to be CNC ported to fit this manifold or does it come ported specifically for stock heads?
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1 of
1 people found the
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A: This manifold should be able to work with stock heads.
Jesse F. @ RallySport Direct 2 years ago
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Q: 2017 Wrx Nick3 years ago
Will this manifold fit on a 2017 wrx?
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0 of
0 people found the
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A: No, this is meant for EJ engines, not the FA in your WRX.
Lane H. @ RallySport Direct 2 years ago
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0 of
0 people found the
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