Drive 8: Waterfall
Drive 8:
Waterfall – From River to Plateau
Waterfall is another hill climb and descent, albeit a mild version than the Boat Shed run and Garie Beach Sea to summit drive. Waterfall climbs about the same height as the others, but over a slightly longer distance. There are some super tight corners that turn into themselves with a tightenig radii infused into this route and the straights have deep sunken depressions that are sure to cause spring bind in not so sorted spring/damper combos. Progressive rate springs generally have a tough time on this route with spring bind issues and after the recent deluge of rain in Sydney, some of the roadway shoulders have totality disappeared - a number of pot holes are so deep they appear bottomless. The roadway was damp in some places where the trees cover the roadway. Otherwise it was generally dry. Only two return runs were conducted on this route as the cloud cover began to look threatening - one in Normal and Comfort return run and another with Dynamic Chassis Control in Sport for an each-way return drive .
Whereas on the low grip roadway texture of the previous Garie Beach run, where the DCC Sport with DG Sport springs lacked a bit of articulation compared to the stock original OE spring and some progressive rate coilovers (namely my prev. KW coilovers), the Waterfall River to Plateau clamber upwards had the DCC in all modes working better than any previous suspension combo I’ve had on the previous MKV and OE MK6 chassis tune. The noise, vibration & harshness (NVH) was by far the better than the aftermarket gear. The deep sunken depressions in the roadway did not perturb the OE spring DCC combo and does not agitate the DG Sport spring either. The DCC electronics know exactly what to do to preserve ride height, chassis control and ride comfort in concert with each other. The DG Sport springs did not exhibit any more or less noise than the original OE springs and the lower ride height, esp. at the front end, did not detract from the Golf GTI’s ability to absorb the peaks and troughs in any way. Other kits I’d run in the past like Eibach Prokit Progressive rate spring would spring bind with a crash – bang – wham sound that was far from OE quality and less than ideal for a $50,000 Golf GTI.
DCC Sport mode with DG Sport springs surprisingly, after driving Garie Beach, showed excellent tractive ability on the hill climb, in particular, on the smoother fine grade bitumen asphalt. The additional rebound rate of the DCC damper has the tyre pushing harder into the tarmac for added level of grip, even on the greasy smooth bitumen corners. There is slight understeer bias all the way up and down the Waterfall route and the ride is noticeably rougher than the Normal DCC mode, but no worse than the ride with original OE springs, with the exception of a few skittish moments of ESC intervention on a couple of short- sharp one wheel hits into pot holes where the harder rate of the DG Sport spring wash-boarded over the set-back in the roadway. One wheel upsets on larger sections of scarred patchword and divots in the roadway may have the tendency to upset one side of the Golf GTI, slighly shifting the GTI offline when in Sport mode and only very occassionally in Normal mode with Driver Gear Sport springs - this is not an issue with the softer Comfort DCC mode, that allows the greater spring compression to soak up the roadway irregularities in a similar fashion to a Koni FSD with its internal high frequency amplifing FSD valves - makes for a more low flying carpet smooth ride and less upset to the straight line trajectory of the Golf GTI.
DCC Normal and Comfort mode used on the first run showed that even Comfort DCC mode handled the big compression hits with utmost finesse with no unwanted tendencies. The vertical action is faster & a little harder than the stock OE springs, but DG Sport still offer enough ride height to compensate and the DCC self adjusts to the speed of the compressing spring to determine the necessary damping force. Comfort and Sport modes are dramatically improved with the DG Sport springs. DG Sport spring also improves DCC Normal mode, but it is not as a tangible improvement as that of the DCC Comfort and Sport modes. There was no issue with any rubbing on a couple of the really fully loaded downhill corners in any DCC mode where in the past the progressive rate aftermarket springs have rubbed on occassion.
I’d rate the DCC Sport mode with DG Sport springs the best suspension setup I experienced on this route as the bitumen offers higher levels of grip and the linear rate DG Sport springs offer fantastic driver feedback and feel in addition to chassis stability and agility. The linear spring rate was surely an advantage on this route and offers a more visceral driver experience than even the KW V3 and H&R sway bars combo on the previous MKV Golf GTI. The progressive sprung Eibach Prokit/Koni FSD and progressive rate KW coilovers in the past would take time to lean then settle into their harder spring rate, taking a bit away from chassis agility, reducing crispness and response and taking longer to negotiate the corner. The Driver Gear Sport springs, having basically linear rate taughtness, offer agility from the instant that you turn into a corner, creating greater chassis response and reducing time for the vehicle to negotiate the bend as the spring is not taking that extra time to lean the chassis into a harder progressive spring rate such as that of an Eibach Prokit or similar. The linear Driver Gear Sport spring rate taughtness creates an immediate effect from steering wheel to chassis response, making for faster & harder cornering and and a thrilling drive experience - esp. on Waterfall route where a number of corners have a tendency to tighten their radii closing in on themselves. The Driver Gear Sport springs make for a linear and direct race car taught feel, provided the roadway offers a half decent texture & level of grip for the tyres to bite into.
The Golf GTI with EDL/XDS working unobtrusively under the DG Sport springs with DCC in Sport has really brought the GTI up a notch or two in terms of chassis control with little or no loss in comfort levels. The basic chassis tune of the GTI is the same as that of the original OE sprung version, although the firmer DG Sport springs can exacerbate the positives and negatives of the original OE spring set-up in terms of the Golf GTI steering predominately from the front. A trade-off in loss of lower speed adjustability on the brake and gas at lower speeds at the expense of dishing up a notable improvement in higher speed precision, directness, taughtness and chassis control that makes the GTI an even easier and more rewarding proposition to muscle around.