S4 performance

[vxah]

Gave my S4 a bit of a pasting with my Dragy box onboard

[1owner69Elan]

Pretty fast.

What is the spec on your S4? Not stock I suppose.

[vxah]

Big valve head, 420 cams, aluminium flywheel, Lotus 5 speed, 3:55 final drive, cv shafts, mappable ignition.
Not really optimised the setup yet but running with a wide band o2 sensor.

[1owner69Elan]

Do you recommend the Dragy? Things you like and don't like?

[vxah]

I did download a couple of mobile phone apps for performance testing but found them to be utterly useless, probably due to the slow gps refresh rate?
I did not want to spend hundreds on an all out lap timer device, just something to see if any tweaks are an improvement or not. Research showed the dragy to be very accurate and easy to use with the app connection via Bluetooth.
There are lots of pre-set parameters and you can add your own like 30-70 mph. It also recognises the location so you can’t cheat by driving downhill.
The blurb says they are working on other things to load onto it but, I haven’t seen anything yet.
Does show how much time is wasted changing gear, especially with a 5 speed that can’t be slammed into second! Someone needs to build a dual clutch