Fuel injection
44
MENTIONS
15
EPISODES
13
PODCASTS
Search complete. 44 mentions across 15 episodes found for "Fuel injection".
Sep 21, 2026
Ray BohacsHOST
And they have what they call inside the ECU on fuel injection, whether it's on gasoline or diesel, but we're talking about gasoline, is what they call flags.
Ray BohacsHOST
And these flags have to be met.
Ray BohacsHOST
So in other words, for instance, a general protocol... on EFI engines since back for the past 40 years is that if it doesn't crank at least 450 RPM, it's not going to pulse the injector.
Ray BohacsHOST
So at 449 RPM, it's not pulsing the injector.
Ray BohacsHOST
So if you start to crank, it has to have enough inertia Because when you turn the key and go into crank, you have to have the starter motor, which is called the cranking motor, has to build enough inertia in the crankshaft.
Sean TippingHOST
What is happening here? Is the module activating a component when it's plugged in and turned on that is drawing way too much current? Maybe that's possible.
Sean TippingHOST
Or is there a circuit that only receives power when the ECM turns on a relay such as the EFI main relay? Okay.
Sean TippingHOST
And I'm leading the witness a little bit there, but that was actually a suggestion that was made by NOAA, which ended up being 100% correct.
Sean TippingHOST
And I'm sure you're familiar with these types of relays that are powered up by an engine control module, but only when it's on, right? And in some cases, those relays will actually feed power back to said module.
Sean TippingHOST
But there's different scenarios depending on the module you're on.
Sean TippingHOST
Anyways, Noah's suggestion was something on, and there's actually a handful of these relays for this engine control module.
Sean TippingHOST
There's a couple, or there might even be three of these EFI relays.
Sean TippingHOST
And then there's an injector relay as well.
Barry THOST
Ford? Yeah, a Ford 460.
Barry THOST
If you modify it, if it's an EFI engine, does the ECU, the computer, get all crazy? Or can you make modifications? I'll ask it a little different way.
Barry THOST
Can you modify an engine mechanically where the computer is still going to be normal in a computerized engine?
Ed SmithGUEST
Probably not.
Lianne LangloisHOST
No, it's not.
Lianne LangloisHOST
It's EFI.
Lianne LangloisHOST
Well, but look, I said, no, they just made it look that way.
Lianne LangloisHOST
But look, it's EFI.
Lianne LangloisHOST
I ride it every day.
Lianne LangloisHOST
I know.
Mike PalumboHOST
Hey, how you doing?
Al RichardsHOST
... from EFI out in Swansea, New Hampshire.
Al RichardsHOST
No.
Mike PalumboHOST
Not even close.
17 MINS LATER
Al RichardsHOST
... what's up.
Al RichardsHOST
[laughs]
Marc SwansonGUEST
So, so sometime around 2011, um, I, I kinda started full time doing the EFI Motorsport thing.
Marc SwansonGUEST
Um, that was back at my, uh, my old shop in, in Lee.
Rocco PrestonGUEST
And as soon as I saw the wheels, I was like, That's it.
Rocco PrestonGUEST
And then when they showed more pictures, the EFI system, I built this thing where you didn't have to modify the original bezel or anything, the dash.
Rocco PrestonGUEST
I had this system that would just put that EFI, what do you call it? Control unit.
Rocco PrestonGUEST
Control unit.
Rocco PrestonGUEST
Yeah.
Brandon DollarGUEST
That's what I love, that's what I'm passionate about.
Brandon DollarGUEST
So when we're talking about a drag car, whether it's an EFI car or if it's a, uh, a carbureted, you know, deal, either one, both can work.
Brandon DollarGUEST
What we're talking about here is power management, right? And to, to be able to do that accurately, you've gotta know a couple things.
Brandon DollarGUEST
You need to know if the object is to get from point A to point B as quickly as possible, and, and the only thing driving us is the tire, w- driveshaft is king, right? That's, that's kind of a big piece of data.
Brandon DollarGUEST
We make a 16-tooth in 11 different sizes, and we make a 32-tooth in the same 11 sizes.
Brandon DollarGUEST
Um, and that's, that really just goes into whether or not you have an ECU or a data logger that's capable of logging at that frequency, right? So some of the old stuff, it can't read the 32-tooth wheels, uh, just 'cause it doesn't have the speed to process.
Brandon DollarGUEST
Pretty much all your big boys, FuelTech, uh, MoTeC, Holley, all the big things that we, we typically see EFI system-wise, they can all run the 32-tooth wheel.
Brandon DollarGUEST
So that would be, that's kind of the starting point, right? So we can see in the, in a data log, you're always gonna have RPM in the log.
Ray BohacsHOST
Everything, you know, these couple items look good.
Ray BohacsHOST
The coolant temperature looks more or less right because what you will find is that most of the time, that a scanner, not a scanner, a sensor on an EFI system is going to skew over time and it's going to be just like gray hair is going to sneak up on you.
Ray BohacsHOST
You look in the mirror one day and all of a sudden you got gray hair.
Ray BohacsHOST
You say, where the hell did that come from? It was day to day, but you didn't notice it.
Danny KimblerGUEST
It's nice, man.
Danny KimblerGUEST
The whole carburetor thing, you know, we talked about it and it was like, you know, EFI carburetor, which we didn't talk about very long, but, uh, yeah, pretty much like carburetor.
Danny KimblerGUEST
Hell yeah, let's do it.
Danny KimblerGUEST
Let's show the world, you know? And it's not that we're doing anything really different, but it's just, it's, it's not a popular thing, right? And people have gotten away.
Danny KimblerGUEST
So let's say he's making 9 PSI, right? Well, you go up on the dyno and he makes his number, say he makes 700 on 9 PSI.
Danny KimblerGUEST
And then we want to jump to a 25-pound pull.
Danny KimblerGUEST
What would it take for you guys that are EFI to do that? Like, what are some of the components that you would need to probably change? Actors, fuel pump.
Danny KimblerGUEST
Exactly.
Gino Stefano CrispieriGUEST
And then it's got coilovers front to rear, um, updated suspension, um, basically all over.
Gino Stefano CrispieriGUEST
Um, what else? It's got a EFI, uh, fuel injection tune on it as well.
Gino Stefano CrispieriGUEST
Cool.
Gino Stefano CrispieriGUEST
And it's actually pretty sweet cause I can literally do tunes, uh, changes on the fly.
37 MINS LATER
Gino Stefano CrispieriGUEST
Serpentine belt on the front.
Gino Stefano CrispieriGUEST
It's got full AC, updated AC as well, updated brakes, updated power steering.
Gino Stefano CrispieriGUEST
It's got that Holley EFI Sniper 2 with the hyperspark, so that means I can literally do tuning on the fly.
Gino Stefano CrispieriGUEST
That's crazy.
5 more episodes mention Fuel injection.
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