Hi Ryan...thats a 4x4 cover with a 10mm spacer...the standard 4x4 inlet setup was good for 460bhp...add the spacer and over 500 easy...the reason being is the space between the trumpets and the cover...10mm making it optimum,the elbow and in is bigger than the 2wd aswell...a 2wd with a 10mm spacer setup recently made 490bhp!..So over 500 wont be a problem

In any case i have a EEC4 cover in the wings if this seup up fails...but TBH it wont as its been tested already!

JHW.....some bloke is making it into a track car....didnt look like that when i sold it...That was the car to get me into all this shit and the Bosch..so big up