I hate electrical gremlins. I had a huge problem one time when I moved the battery to the back of the trunk. I ended up constructing 2 ground straps outta 0 gauge wire and replaced the stock one as well. Stupid crappy stock grounds.
Was this happening before?
Anything else was done?
2016 VW GTI 2.0 Turbo
1989 Sonic Blue LX Coupe, 349 ci, TW heads, TFS Track Heat Intake, 75mm Accufab TB, 80mm ProM, 30 lb. inj, TKO, 3.73, 31 spline w/ TruTrac, MAC 1-5/8" LT headers w/ H pipe, Flowmaster, electric fan Moates QH
391 rwhp & 424 rwtq...Mustang Dyno 11.5@122mph