APR Golf 1.8 TSI "Stage 3" IS20 tune - 87 octane/stock downpipe tune used on 92 octane, high flow downpipe. Combo of ignition advance finally starting to rise at 5000RPM to help with power as turbo fades, but boost curve does not taper down fast enough. Created custom boost curve and revised it numerous times to get smoothness down low and option to keep it floor and let AT shift at 6500, EPC/limp mode completely resolved! Who needs Ian at Reflect! :)