In Autocross for years and years I would regularly ride the limiter in everything from my S2000 to the 911 GT3 I ran from 05-07. I never thought twice about it. Last december I was at a dyno day talking with a tuner that happened to be there. (I think he was a ford/evo guy, he was working with a new SHO). And he had an interesting view point on it. His View was that when you hit the limiter it's a fuel cut in most cars. What if your injectors leak a slight bit or there is some fuel still in the manifold that makes it's way down into the cylinder (especially on a boosted car). That fuel is going to be forced into the engine and your going to have a VERY lean combustion while on the rev limiter. Not sure how accurate his opinion is but it's made me think twice about riding the limiter now.
but I haven't been hearing about blown motors cause of lean on the limiter. Also, I don't know but it's possible to cut both fuel and injection on a per cylinder basis. I honestly don't know what the cars do. If I were programming them, I'd do both.
with carb'ed cars you have to drop spark and get those nice flames out the exhaust. But with computer controlled FI, you can cut both.
Anyone data log the car to see what it actually does?
