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H-Dev plenum spacer group buy


Richf
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H-Dev Plenum Spacer kit Group buy

 

We have an order of these coming in shortly so thought we would offer a group buy

 

 

The plenum spacer adds more midrage power and torque to the DE and Rev-Up engine, we typically see between 5-15hp difference depending on the car

 

 

You will receive:

 

1x Horsham Developments 8mm Plenum Spacer

1x Horsham Developments plenum gasket

Fitting kit

Detailed illustrated fitting guide

 

The plenum spacer adds more midrage power and torque, we typically see between 5-15hp difference depending on the car

 

Our usual price is £159.99

 

5+ = £144.99,

10+ = £129.99

 

 

Postage and packing for UK mainland is £5.34

 

The GB will close on the 15th June - to get involved, get your name down on the list below , we will contact you after this date for payment and shipping details

 

Additonally we can fit the spacer and remap your car for a special price of £449.99 plus the cost of the spacer.

 

1.

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Roughly 2mm is shaved off the top of the front 2 inlet manifold trumpets/runners.

The theory being this allows more air to reach the front 2 cylinders, which is the restriction we are trying to overcome by fitting the plenum spacer.

It's modified lower plenum designed for the Revup engine, but if it works for that I can't see why it wont work on a DE engine too.

 

See Motordyne's site: http://www.motordyneengineering.com/index.php?cPath=2_8&osCsid=1c6f5ca491c5f2c0ebb148a80cf714e4

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If Motordyne's figures for testing the differences between a 1/2inch and 5/16inch spacer are accurate than it should be a possible gain of 1.664 HP difference for a normally aspirated engine - zilch as you said! :)

 

The big gains are from fitting the 5/16inch spacer in the first place - as per this group buy!!!

 

Here is the theory explained on their site - Plenum Spacers & The VQ35 DE : https://motordyneusa.com/vq35-de/

Edited by GrahameJ
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Are these fairly to install and do they do anything without a remap?

 

Pretty sure any performance mod on the zed needs a remap otherwise the ecu just reigns it back to stock hp

 

Is this true??? Will I see any gains without a remap?? If the answer is yes then please put me down for one also.

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Are these fairly to install and do they do anything without a remap?

 

Pretty sure any performance mod on the zed needs a remap otherwise the ecu just reigns it back to stock hp

 

Is this true??? Will I see any gains without a remap?? If the answer is yes then please put me down for one also.

 

You will see gains ,, we did one on Friday and it made about 7hp pre - post spacer but the car had already been mapped so it wasnt really a fair comparison

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