Most have it stuck in their heads that an aftermarket fuel management system like XFI will turn their TR into a hell ride. When asked about a fuel management system, I tell the person to pick something they understand so that they don't have to rely on someone else to set it up and tune it for them. One of the young locals is a wizard with XFI etc, so I fully understand and endorse him using it. Grumpy/Russ went 9.98 at 138 years ago on Erics alky chip. I ran 7 flat at 100 in the 1/8th all day long with Erics 112 race chip on stock junk, 23 PSI, 780/780 for fueling, 36/24 for timing and an easy 1.68 launch. I pulled into the lights last, spooled for 2 seconds and was gone on a quick light. Vids are on my channel. For whatever reason, TR owners love to struggle.