Quote:
Originally Posted by Kingtal0n
1. If you have an expensive engine, say 30k, you use the AEM or similar ahead of a PFC for its additional features. The PFC is a bare bones for "cheap" engines usually daily drivers on a budget. I've mentioned this 100x and fully support the use of better stand-alone systems if the application calls for it. IF the application calls for it.
2. The PFC contains what every stand-alone contains: fuel cut rev limiter. Which is more than enough for a daily/street application at any power level, and safe to use.
3. Even the AEM does not contain a fuel cut safety switch.
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I just wanted to touch on these real quick. I think whether the application calls for it or not is really up to the user. If I can instrument a stock sr20 with enough sensors and fail-safes to make it last way longer than it ever would have without them then I'm all for it. And even better for my built motor if I ever decide to put it in.
So it has a fuel cut rev limiter. What if oil pressure is low? The PFC is gonna run the engine until the rods come out since it doesn't have an input for that parameter. That's pretty important.
I have a fuel pressure sensor in my regulator wired directly to the AEM. This is a fuel cut safety. If my fuel pressure ever drops it will cut the engine off or cut the boost pressure, pull timing, limp mode or whatever I tell it to do in that event. What am I missing here? I don't see how any external fuel cut off would be better.