Cab, I definitely have to check that. I had some fitment issues with intake manifold from the start from the milling of the block/heads. I had to use a custom .120 thickness intake gasket to mate it all up. That would definitely be a better issue to have then the rings LOL

Wouldn't put it past the rings though as this FITECH ran disgustingly rich for a while during break in (and still does, though not as bad) due to a host of issues. Lean tip in problems that I couldn't adjust away with more accelerator shot, AFR's fluxuating like a pendulum that seemed to improve when I limited the systems learns to +/- 10% instead of 30, Issues with AFR's plummeting rich after coming to a stop with no sign of any changes in fuel pressure, vacuum leaks or anything. I've really had it with that system.