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  1. #1
    Active Member One Ring
    Join Date
    Oct 20 2015
    AZ Member #
    363331
    My Garage
    2013 S6, 1958 VW Fiberglass Buggy, 2003 TT 225 Big Turbo
    Location
    Owings Mills Maryland

    Launch Control/2 Step Set up

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    Hey guys, im new to the forum and was hoping to find some help with setting up launch control/2step...

    Basic info:
    2003 TT 225. 6 speed, Haldex Quattro
    Stock AEB Head
    GT3076r turbo
    750cc Bosch EV14
    IE Rods
    Stock pistons
    Eurodyne ME7

    Currently running 93octane at 30psi.

    I am having issues with launching the car. With 2 step deactivated, it is very difficult to launch with out bogging. Even when dumping it at 6500-7rpm, it is hit or miss weather I get some wheel spin, or she bogs to about 2k...

    I activated the 2 step thinking this would be the answer. I set the rpm to 5000rpm. It builds about 7psi. When I dump/aggressively slip the clutch I can keep it in boost about 65% of my lunches with out bogging. If I work the clutch too much it will start to slip and if I dump to fast it bogs. I currently have a FX350 with about 4000 miles on it.

    My question is this. Can you manipulate the 2 step to build more boost? Also, I understand how bad this is on the exhaust valves, but is this only when on 2step for extended periods of time (more than a few seconds) or am I shortening the life everytime I use the 2 step?

    I have seen some awd 1.8t vidoes of cars make 15-20psi on 2 step and their cars are taking off like a bat out of hell. Anyone have any experience with this? Any input would be much appreciated.
    Thanks!
    Last edited by 03TT3076r; 10-20-2015 at 08:08 PM. Reason: grammer

  2. #2
    Active Member Two Rings Kyüshutsu's Avatar
    Join Date
    Jul 28 2013
    AZ Member #
    119799
    Location
    Minnesota

    Are the two step "bats out of hell" 1.8ts A4s or TTs? The TT Quattro uses Haldex whereas the A4 Quattro is a Torsen Center Diff. I believe the Haldex is only part-time AWD; only when the front is slipping does it send torque to the rear. The Torsen is permanent AWD that can also allocate up to a 2:1 torque ratio when a side is slipping.

    I'm pretty confident that is true but I'm sure others on here can chime in. In regard to your two-step setup, what are you using to set it?

  3. #3
    Active Member Two Rings Kyüshutsu's Avatar
    Join Date
    Jul 28 2013
    AZ Member #
    119799
    Location
    Minnesota

    Another thought I had is, with your BT set up when does your turbo typically full spool?

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