[quote=“newman,post:12,topic:27014"”]
it’s antilag. In a true antilag the ignition has a massive advance so that it actually ignites after the exhaust valves are open. Then, instead of using all of the combustion pressure to force the piston down in the power stroke a portion of the generated pressure then exits into the manifold and spools the turbo. It’s pretty hard on parts, too, especially manifolds and turbine wheels.
There is also a more common antilag, that’s a 2 step rev limiter. Here there is no advance, but what happens is that in order to keep the engine from revving past a certain RPM, it cuts the spark. The unburnt fuel is then pushed into the exhaust manifold. By this time, the engine rpm has dropped a little bit and now the spark plugs fire again. Well, this time when the exhaust valves open, the heat of combustion ignites the fuel that was pushed into the manifold and that secondary explosion spools the turbo. This isn’t the “real deal” antilag, so to speak, but it’s simpler .
[/quote]
Antilag uses timing retard, not advance to burn fuel later in the cycle so it partially ignites in the exhaust manifold. I know you know this and you just typed it backwards by accident, but just to clarify for everyone else… It also generally involves air injection.
Also a 2 step is a rev limiter and is totally different than antilag. It can be spark cut, fuel cut, or a combination of both as well as cutting single, multiple, or all cylinders at once depending on how you set it up. This isn’t designed to burn fuel in the manifold by altering timing, but if you’re cutting spark and not fuel on one cylcle then some of the fuel gets pushed out on the exhaust stroke and on the next cycle that fuel will get ignited in the manifold.
You are correct about the straps. As long as they’re not beat up they can hold a lot more than you’d guess.