Originally Posted by Freds GTV 2001
What sort of brakes do you have on your car ? are they the standard brakes ? The standard brakes on the V6 are terrible anyway. Thats one of the areas on the V6 that needs modification. Your lucky your car already has all the right mods including Bilstein/Ehbach and Q2. Did you put them on or was it from the previous owner? If from previous owner I would assume they would have upgraded the brakes as well.
In terms of brake upgrades first thing I would do is get Upgraded Pads Ferodo DS2500 for example thats the most cost effective upgrage, then you can get braided hoses, fluids and bigger disks and calipers but they all cost money.
Also could be the stiffer suspension activating the ABS as well.
BTW how is the Bilstein/ Eihbach combo is it hard on most surfaces ? do you have any pics of the car ?
First of all thanks everyone for your comments.
The new brakes are bosch discs and pads which i have carefully bedded in now along with the usual goodridge hoses and dot5 fluid. Before this i had tried Tarox SJ discs and the Tarox rally plus pads which were noisy as hell but once warm did bite better than the standard ones i now have. However i had experienced the ABS cut in with the tarox setup but i'd put some of it down to the brakes being well worn. So replacing them hasnt cured it.
The eibach springs and bilstein dampers are imo too stiff on poor roads having driven on them for a while now they dont offer enough control. I cant decide which part of the setup is to blame but i think maybe the springs as the damping now is certainly less crashy than with standard setup (even worse!). I'd guess just bilstein dampers and standard springs would be better but i think i should have gone with just koni's as theyre cheaper and you can adjust them. Body control sadly seems to be a real GTV weakness
To answer a couple of q's....
You got 225/45 tyres at the front and back? 'Yes'
Does the same happen if the road is smooth flat? 'No, but i havent really tried to induce it'
How old are the bilstein dampers at the back? '10k miles'
It could be that one of the ABS-sensors isn't reading the speed of the wheels properly, cause it's filthy or perhaps the wrong type sensor is fitted. 'Worth looking at, thanks
Perhaps its a combo of stiff spring and the Q2 causing this effect. If the road is badly rutted then the combo of the Q2 working on deceleration (moving car left and right a bit), incorrect camber due to lowering and the stiff suspension being worked hard is causing the ABS to kick in.
I must say i'm thinking of going back to standard springs for a number of reasons...comfort, tyre wear and who knows maybe make the abs work better
Oh and i have a weichers strut brace to put on which i am perhaps over optimistically hoping will transform the stability under braking and solve this thing