360 block limits

frosty_the_punk said
can you please elaborate on this? I'm not sure how you could've come to this conclusion.

EFI can be a comprehensive fuel metering system which can be setup do adjust fuel flow in the tiniest of increments.
we're talking variable pressure, variable flow and variable duration down to the 4th decimal of a millisecond, and injector valve lift measured in microns.

And it can all be calibrated based on almost unlimited number of specific individual variables in atmospheric conditions compared to the engine's operating conditions.
From memory my haltech unit runs at 50 mhz.
That's 50 million calculated processes per second.

In comparison, Carbs have 3 venturi circuits, air bleeds and an accelerator pump. maybe a choke, too.

So yes, i think there is a pretty wide disparity in complexity between the two systems.

sometimes, sure. This does happen.
But you're making it seem as if "blowing **** up" is predominantly an EFI issue when I don't think that's accurate.

The idea that a blown up engine would have stayed alive if only the owner had stuck with his trusty carburettor is something I don't really get behind.
Calibration error is calibrator error.

We don't get to blame EFI for a "bad tune" any more than we get to blame carbs for a "bad tune"

The only difference is, EFI can be tuned in ways which carbs can't.
When a carb is presenting a limitation in accurate fuel metering, such as when facing a fuel distribution issue.. switching to EFI is an excellent way to overcome that limitation.

I'm guessing that might be because nearly all power adder cars are EFI. And for good reason.

blow through carbs are something I wouldn't personally recommend to anyone who values their sanity or their engine.

This makes sense to me.
My personal preference is forced induction over nitrous, but if I was hell-bent on keeping a carburettor on my engine it would be wayyyy easier to get it to be happy around town, and survive on the strip by adding on nitrous instead of boost.

Boost has all those air pressure and temp fluctuations, nitrous has fewer variables to account for.
again... blow through carbs are just a big compromise to me.

But other people run them and love them, I do see a lot of them lunch motors though.
So it's not just an EFI thing.

The biggest "learning curve" with efi is the technology- IF you fully understand fuel curves/tuning. That's why I said if you understand how to tune and can work a smart phone it's not really that complicated. You and your buddy's already said it can be "tuned in minutes with the push of a button" and now you are trying to tell me it's super complex lol. There are as many guys running efi that don't really know how to tune than carbs BUT the majority are doing it on what is considered average hp by today's standards.

The tuning window gets a lot smaller on something making more than average hp with a power adder and that's where they get into trouble. My question to you is what have you tuned efi on that makes big power with boost?, and subarus, hondas etc. do not count lol.

If you have never done it yet try monitoring the fuel pressure spread between injectors and see how much difference there is between them and then get back to me on fuel distribution problems. Things that seem minor and don't hurt the average street/strip engine will destroy a race engine with a power adder at the track very fast.

One of the fastest street cars we have around here (and the guy drives the wheels off it on the street) is a 7 second camaro with a 540, turbo and a throttle body. He sent the specs to a place out to a tuner in some other state and they spec'd a tune for him and that's what he uses. I will not change any of your minds and I really don't care to, I like efi a lot but I also don't sugarcoat it into being gods gift to the performance world. Like this thread I'm burned out, back to the regular program.