I wonder what it's got booster venturis for?
Seriously, it does have a MAP sensor built in somewhere, as near as I can tell. As with most TBI systems, I'm not sure what fuel distribution would be like on a slant six.
| Slant Six Forum https://www.slantsix.org/forum/ |
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| another EFI kit out https://www.slantsix.org/forum/viewtopic.php?t=47721 |
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| Author: | Volare4life [ Thu Jan 26, 2012 2:17 pm ] |
| Post subject: | another EFI kit out |
dunno if anyone ahs seen this yet, still too rich for my blood lol http://www.atomicefi.com/Atomic_EFI_Kits.aspx -Mike |
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| Author: | Reed [ Thu Jan 26, 2012 2:50 pm ] |
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It is a throttle body system. In my mind, TBI systems aren't worth the money and effort. Just get a well tuned cab. My opinion is that if you are going to go to EFI, you should go to a MAF based multi-port system or don't do it at all. |
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| Author: | Volare4life [ Thu Jan 26, 2012 5:27 pm ] |
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yea thse are my plans for down the road, but i figured i would share just incase anyone is intrested lol -Mike |
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| Author: | Sam Powell [ Fri Jan 27, 2012 4:22 am ] |
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Their wiring diagram does not show a MAP sensor, so I do not know how they figure engine load. I think maybe it is internal in the TB. It is encouraging that MSD, who has been producing pretty good stuff for 40 years now is getting into EFI. It has to be a good sign. I think their stuff has always been well thought out,well tested, and pretty user friendly. Sam |
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| Author: | Matt Cramer [ Fri Jan 27, 2012 8:47 am ] |
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I wonder what it's got booster venturis for? Seriously, it does have a MAP sensor built in somewhere, as near as I can tell. As with most TBI systems, I'm not sure what fuel distribution would be like on a slant six. |
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| Author: | Pierre [ Fri Jan 27, 2012 9:12 am ] |
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From the paragraph under the throttle body heading of the individual parts section.... Quote: the compact design is similar in size to a carburetor, yet contains an Electronic Control Unit, four injectors, the Idle Air Control solenoid, TPS, MAP, Intake Air Temperature (IAT) and more
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| Author: | Rug_Trucker [ Fri Jan 27, 2012 6:33 pm ] |
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I wonder what kind of fuel pressure it needs? And if they have a blow through in the works? |
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| Author: | Rust collector [ Sat Jan 28, 2012 4:34 am ] |
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I think it was barry grant that had something similar, I think I saw it in hot rod, between -97 and -00 or so? |
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| Author: | GunPilot [ Sat Jan 28, 2012 4:29 pm ] |
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Quote: It is a throttle body system. In my mind, TBI systems aren't worth the money and effort. Just get a well tuned cab. My opinion is that if you are going to go to EFI, you should go to a MAF based multi-port system or don't do it at all.
I disagree with just about all of that. A TBI system can run just fine, and there's no reason a speed density system can't run just as well as a MAF. One thing I will concede is, in my experience, a TBI on a non-heated slant six intake tends to foul out the rear three plugs when cold. Otherwise, running a TBI on a heated mani or a V-8 works quite well with an aftermarket speed-density system. The contention to build a MAF MPI system or none at all is ridiculous. And you can easily spend as much money on a carburetor as you can a DIY EFI system. Been there, done both. EFI wins. I would never go back to a carburetor, ever. There is no such thing as a well-tuned carb, just an acceptably tuned carb. Nevertheless, a carb will never be as good as an EFI system, TBI or not. As for the system the OP linked, it will probably run pretty well on a Chevy 350. Seems overpriced to me. |
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| Author: | Reed [ Sat Jan 28, 2012 4:49 pm ] |
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Opinions can differ, but my opinion is that for the cost and effort it takes to switch to fuel injection, I would rather go multi-port MAF than speed density TBI. TBI solves none of the fuel distribution problems inherent in a wet manifold. My belief is if you are going to make the effort to switch to EFI, you might as well go all the way to multi-port. I don't doubt a TBI system can run well. However, I see it mainly as a stop-gap system between a carb and a multi-port system. I don't see the benefits of a TBI system as making it worth swapping in place of a carb. For much less money and effort a carburetor can be installed and tuned that will run just as well as a TBI system. I would prefer a batch fire port injected speed density system over a TBI system. |
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| Author: | Matt Cramer [ Mon Jan 30, 2012 8:48 am ] |
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Quote: I think it was barry grant that had something similar, I think I saw it in hot rod, between -97 and -00 or so?
It appears they were dissatisfied with the way it ran and stopped making it. Their system wasn't "self tuning" as much as "minimal adjustment" - and they didn't put in enough adjustments to get it working well in all applications.
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| Author: | Rug_Trucker [ Mon Jan 30, 2012 1:58 pm ] |
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Someone out in CA had one and they stopped answering the phones. Kind of looked like a Holley 4bbl. |
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| Author: | kesteb [ Tue Jan 31, 2012 10:14 pm ] |
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The problem with most of these TBI units is that they have no provision to run the ignition. Which is a pitting seeing that MSD has a complete line of ignition products. On the other hand it has a CAN port so maybe it is somewhat expandable. On a V engine, when using a single plane manifold, there wouldn't be much difference between port injection and TBI. The mixture distribution has been solved long ago. Of course there is always the theoretical possibility of the expanding gas mixture flowing thru the manifold may actually cool the manifold off and increase HP. |
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| Author: | Rug_Trucker [ Fri Jul 20, 2012 1:56 pm ] |
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Well, I think I am riding with a former Mopar Muscle mag guy tomorrow down to the Huntsville show. He has done 2 installs. He has nothing but good things about this EFI. We'll see if I can't pick his brain for more info. 
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| Author: | olafla [ Fri Jul 20, 2012 6:39 pm ] |
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A couple of interesting features for both economy and power, are injector discharge through an annular ring, and also fuel cutoff on decelleration. A real comparison with an optimized carburetor would be interesting to see. I think this is an expandable system that MSD will let grow into a complete after market engine management system, if it turn out to be a success. A real pity is the price; it cost more than my car is worth... Olaf. |
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