So my curiosity (and the presence of a good deal) got the better of me and I'll be dabbling in S/C for a little while before picking up a TSE turbo kit.
I just got my MS3x put together and will be putting it into the car once the engine is assembled and reinstalled and running N/A for a bit to familiarize myself with tuning and TunerStudio.
In the meantime, I wanted to start gathering all the necessary information in order to run the S/C smoothly and safely once installed. I know S/C IATs tend to run quite a bit hotter than Turbos, and so I know I'll be running a bit richer for detonation prevention, though I've also taken measures in the engine build to keep knock at bay.
Some relevant details:
BP-4W engine, 8.25:1 CR, Forged Long Rods
S/C kit will be Moss MP62 Hotside with TDR Intercooler
Starting Boost will be ~6-8psi or so, upped to ~14psi after I feel the need/desire.
E85 planned, but not running for the next few months till i upgrade fuel lines/flex fuel
I know at the lower boost I won't need to be as aggressive with the richness, but as things get closer to 14psi, I'll want to make sure I'm keeping the engine happy.
There's a good chance that my google-fu isn't as good as it could be, but the best discussion I could find relevant to this was patsmx5's discussion on running at high boost on pump gas (LinkyLinky
). His table (shown below) was used for some very high S/C boost (21+ PSI), and higher compression than I'm running (9-9.5:1) but on better pump gas (93 vs. California 91).
Given all of this, Is this a decent place to start given all of the variables? Is it safe to lean out the cruising area, even with a S/C? Should the Target AFR scale linearly along the RPM axis given that a S/C's boost scales (mostly) linearly with RPM?
Any help greatly appreciated.