Changing the injectors on the LTG engine isn't as straightforward as changing injectors on most MPFI engines. As you can see, we had to remove the intake manifold to gain access to the fuel rail.

Also note how much more "beefy" the fuel rail and injectors are compared to MPFI fuel rails an injectors. That's because SIDI injectors routinely have to operate in the 2000-3000psi range, sometimes beyond 3000psi even. That's compared to 45-60psi on most MPFI rails!