10.3:1 6.0, 225 PRC heads, cam .695/.613 - 231/243, twin BW S366, VSRacing gen 3 44 mm wastegates & 50mm BOV, Bosch 210’s, TBSS intake, Holley smart coils, Holley Dominator, O2’s 18-22” after turbos, 3.5” dual exhaust stops about 2’ before rear differential, will be flex fuel but for initial start/tune is on ethanol free 91, BR7EF plugs, Firecore wires, Motion 92mm TB, fuel pressure at 55 psi, 10 an splits to 8an to feed each rail then out each rail into the reg & return is 6an, vacuum ran from intake to dist block feeding map & BOV, fpr has own vac line from intake, vac from cold pipe to wastegates, 2 in 1 out treadstone innercooler, on board air to wastegates, Holley dual boost controllers. I can find zero vacuum leaks, fuel leaks, injectors were brand new and have been tested twice, played musical coils with 4 spare smart coils, compression check was 200 psi - 208 psi & leak down was 4-5% with 1 cylinder just under 7%. First start both banks are fairly even & slightly rich then it settles for a few seconds and it’s all stoich, then the odd bank starts to have lean spikes, going from stoich & briefly flashing 15:1-16:1 to stoich & stays like that, under 0-9% throttle it doesn’t respond much & even stumbles a bit, at 10-11ish% throttle it’ll run somewhat smooth & rev but still has the mild lean spikes, above that it surges and goes 19-11 lean-rich on the odd bank, and much smaller movement from the even bank. Closed and open loop. I do have a remote tuner helping out when he’s available & hopefully will be remoting in this week after a month of me tending to other issues. I have baptized this engine bay in brake clean looking for a leak & nothing, no exhaust leaks to be found. I have a smoke machine being delivered this week. I’m on my 3rd set of plugs, not that the other 2 sets are junk, just running out of ideas. All plugs show combustion is happening, nothing looks scary although mostly idle time doesn’t help read a plug. I had zero luck finding a way to plug the TBSS map port so it’s threaded with a bolt and oring screwed in.

I’m planning to travel to more car and race events around the country this year. What events are must-attends that I should add to my list?

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