Been having this minor problem since getting the hp-f tune. During normal launches everything is fine, but from a rolling start or taking of slowly if i mash the peddle the engine seems to bog for a bit and then open up. acceleration slows and the engine sound changes like it's under load. After a second it's fine and keeps accelerating.
All other gears are no problem just 1st gear.
DSC is off and steering wheel straight.
Any thoughts?