Hey all, new to this forum and just after some help! I own a Vx ss 5.7ltr auto, with a big cam and supporting mods and have recently been experiencing 2 issues 1: when the car is cold after coming to a stop I will go to take off and put my foot down and the car will just roll and not rev until I have pumped the accelerator down a few time, I have told it could be the brake booster so replaced that and same problem. Only lasts until the car is warm, it's driving me crazy! 2nd problem: when rolling if I go to brake the car slows down average/Normal but if I slam my foot on the brake the pedal gets quite hard towards the floor and the abs doesn't engage and lock up and the car just rolls to a stop. I have checked all fuses, pads, disc bled the breaks and checked with a scan tool with no luck. Any help is greatly appreciated thankyou ! Max.