360 block limits
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.
Ok, i'm not exactly sure what you mean by the technology. but you also said a lot of guys are getting it wrong and lunching their engines, that's usually a tuner issue.
there are definite pitfalls when it comes to EFI tuning.
I'd estimate that 90% of them are caused either bad/missing flow rate injector data causing unexpected or unpredictable results from a pulsewidth alteration, or an issue with a fuel/ignition conpensation table where something is either put into the VE table instead of a conpensation, or compensations are stacked when they shouldnt be.
If it's hardware related it's usually inadequate grounding which is messing with a 5v sensor signal.
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.
To input the data is quick and simple, literally the push of a button.
Knowing what to input, where to put it, and how to setup the correct parameters for it to take effect. That takes some learning to know what you're doing.
And it's not realistic to expect to just figure it out by browsing the menus and interface. Though so many peoole think they can do this.
If a person hasn't tuned EFI before and hasn't learned the process tries to "wing it" they're definitely going to **** it up.
They'll probably be able to get it to run though.
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.
I don't see a problem with this, you really don't need to be a carburettor guy to tune efi and vice versa.
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.
Agreed 100%
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.
What classifies as big power to you? And why wouldn't those brands count?
I'm not claiming to be an EFI guru, i'm not a professional. Far from it.
but I have dabbled with boosted cars as a hobby. Certainly nothing I'd describe as "big hp" though.
There are definitely guys on here who are more qualified than myself.
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.
I have done this, in a sense. When possible I like to design my fuel system so that I can install a fuel pressure gauge at either end of each injector rail as a diagnostic tool. It allows me to compare fuel pressure both bank to bank and end to end.
I tend to leave it upstream of the first injector so that I can monitor any disparity between what pressure my FPR (downstream of all injectors obviously) is set and what the gauge reads.
I haven't seen any significant fluctuations, but I also tend to run a fuel damper, provide substantial headroom on my pumps and more than adequate diameter on my lines. Perhaps I've been lucky so far?
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.
Absolutely, the closer an engine is to the knock threshold the more critical it is to tune it correctly. And that's boosted engines in a nutshell.
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.
That is interesting, I'd be extremely apprehensive about getting a canned tune for an engine of that performance level.
But if it's essentially the same combination as one that the remote tuner was intimately familiar with I can see how that would work.
I don't think anyone is saying that EFI is god's gift to the performance world, but rather that it can do a lot of things which carburettors can't.
And like any tool, it can only be as good as the operator.
