I emailed them just to find out:
Just to advise we do not have stock of these parts but we would be able to order them.
£13.09 + Vat
&
£49.40 + Vat
Please contact Martin Pearson 0141-551-5152,
Thanks.
Splashed out and got a mannumomtr...manumumeter........ vacuum gauge as I wanted to know what the standard intake was actually like and where improvements could be made.
The points tested were
1. Just behind grill where the intake tube starts
2. Rear end of intake tube just before airbox
3. Top of airbox
4. Turbo side of airflow meter
Then I did several runs, 2nd gear wide open throttle to 6500rpm to get the max reading for each point.
The readings I got (in inches of water) averaged out were
1. 19.5 (bit surprising how high that was! Thats just the air trying to get past the grill into the intake tube)
2. 28.5 (a 10 inch drop from the front to the back of the tube)
3. 29.0 (thats across the air filter - seems like a pretty good filter, not much to be gained there)
4. 44.7 (through the airflow sensor - another big drop. Theres the flow straightening grid, a wire mesh then another plastic grill)
I then fitted the SEAT intake, and after stitches and a blood transfusion, began to test.
You may recall from the first exciting episode, that I had a connection for the vac gauge at the rear of the intake tube, just before the airbox. This is where I connected it for the next set of tests.
With the standard intake I'd had a reading of 28.5.
With the new intake I got 11.2 - pretty pleased!
I then cut away the deflection flap in the intake just behind the grill (see Shanes pics in anther thread).
With this done I got 5.2 !!!! (You were right Shane!)
This was a huge improvement from 28.5
I then measured from the top of the airbox (to get a reading across the filter) and got 7.2 This is pretty damn good for any filter, let alone a stock one. So I dont think there'd be any improvement with an aftermarket filter.
Next was the turbo side of the MAF where I got 23.9
Big frustration, really poorly designed grills in the MAF, but still a hell of a lot better than the 44.7 with the standard inlet.
So, seeing as 44.7 equals about 1.6 psi, with the original intake I was feeding the turbo with air at 13.1psi. With the new inlet, its about 13.9 psi.
And I figure if you're feeding the turbo denser air, its going to do a bit more, despite any limitations of its performance envelope, and this was born out by the dyno results and the Butt-o-meter.
Before, 114.1 kw atw
After, 120.1 kw atw