Dyno Tuned K20a with bolts-ons got new cams/12.5:1 what to change in tune for safe start up?
Posted: Fri Sep 26, 2025 1:57 pm
Hey
I got my jdm k20a type-r dyno tuned with bolt ons - rdx injectors, fuel pump, exhaust, intake, tuned with 50 vtc
Now i rebuild the engine and added a Toda A3 cams, 12.5:1 pistons, RRC manifold, VTC mechanicaly limited to 40,(injectors and pump didnt change).
What do i have to change for SAFE start up after i build this engine? + Drive around get aligment etc
Vtc is mechanically limited to 40degree, so it will not smash valves.
I gonna get proper dyno tune in the spring, just need the car to start and move around and drive for couple days before winter storage.
I got my jdm k20a type-r dyno tuned with bolt ons - rdx injectors, fuel pump, exhaust, intake, tuned with 50 vtc
Now i rebuild the engine and added a Toda A3 cams, 12.5:1 pistons, RRC manifold, VTC mechanicaly limited to 40,(injectors and pump didnt change).
What do i have to change for SAFE start up after i build this engine? + Drive around get aligment etc
Vtc is mechanically limited to 40degree, so it will not smash valves.
I gonna get proper dyno tune in the spring, just need the car to start and move around and drive for couple days before winter storage.