Auxilliary Port gauge for an n/a??

[Gregory_Da_Grasshopp]

Hi I've seen that people do this electronic port activation thingy. I've got an S4 n/a engine with no acv or pump.
Does anyone have a how to guide on how put a gauge in, so i can tell when the aux ports are open or even opening still. i think they are as i get a whoosh and im off. But at the mo i've gotta drive to work and fuel ain't gettin cheaper! so would be nice to know the best cruising speed.

Do i have to have a s5 vdi??

any info would be gratefull i had a look on rx7club but not sure!!
Cheers Greg

[dthebuk]

I have one of these guages, I'll try and have a look monday, busy untill then.

One way of telling if the ports are open is the slight change in exhuast note

[Gregory_Da_Grasshopp]

Cheers,
It doesn't have a distinct note change its just always loud, the pedal goes down a little quicker at certain revs, like it's allowing more flow through the system! but it would be nice know visually when they are open and closed so i know when i'm savin the pennies! or not savin' them as it were!

Greg

[dthebuk]

oh, they open at 4.5 revs. Its not sudden, which is why you don't notice. Similar to vtec without the kick:D