MSD Atomic EFI
Thread Starter
Le Mans Master
Joined: Dec 2006
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MSD Atomic EFI
Anybody used one of these? They are C.A.R.B. certified. Would make life much simpler.
https://www.msdperformance.com/produ...tbi/parts/2900
https://www.msdperformance.com/produ...tbi/parts/2900
Last edited by Big2Bird; Feb 14, 2018 at 08:25 PM.
Race Director
Joined: Jan 2000
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From: San Jose CA
Anybody used one of these? They are C.A.R.B. certified. Would make life much simpler.
https://www.msdperformance.com/produ...tbi/parts/2900
https://www.msdperformance.com/produ...tbi/parts/2900
https://www.corvetteforum.com/forums...post1596347426
As said, I prefer having the computer control timing. It made for a much smoother experience. I'm at the point now where most things are better than they were with the carb. Cold starts, A/C at idle, high gear cruising. It's been long enough now without a carb that I don't even really remember what was better.
It's the best way to get electric fan control and an IAC so A/C engagement doesn't completely bog down your setup like it does w/ a carb+idle stop solenoid.
Let me know what you'd like to know. I did the entire install myself, nose-to-tail. OK, I didn't weld in the O2 bung.
Race Director
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From: South Western Ontario
I guess if you need CARB certification. Otherwise, I would pick the Holley Sniper system ahead of this one. Sniper is Holleys new EFI system offering so they are still putting development resources towards it to expand the product line.
Thread Starter
Le Mans Master
Joined: Dec 2006
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CARB is a must. It is what it is.
Race Director
Joined: Jan 2000
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From: San Jose CA
No, I'm running it. There's a ported source on the MSD throttle body you can use for it and EFE.
If I was chasing the latest and greatest, I'd _at least_ be running a crank trigger, COP and port injection. TB EFI wouldn't be a consideration but, like Big2Bird, my creativity is shackled by CARB.
All said and done though, I frequently question not going with a BAR'd LS swap.
All said and done though, I frequently question not going with a BAR'd LS swap.
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Le Mans Master
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Race Director
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From: San Jose CA
1 flash for drive, and one flash for Kalifornia.
Safety Car
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From: Seattle Washington
Yes MSD has been swallowed up by the Holley Jugernaught. And like the Accel System it will continue until somebody decides otherwise. And then all the valuable parts and service will be thrown out never to be seen again.
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Joined: Jan 2000
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From: San Jose CA
Regarding fuel systems, the EFI system is pretty standard fare.
I went with a return-style system. I used an Aeromotive Phantom setup, to the right of the fuel sending unit on top of the tank. PTFE lined AN-6 hoses run the original route of the fuel lines.
For venting, I'm using the charcoal canister. The Vent port on the Phantom bulkhead is plugged.
I mounted the filter and regulator (also Aeromotive) to the floorboard. I've since moved the regulator and want to relocate the filter back to the passenger rear frame rail - it's too noisy and the floorboard acts like a subwoofer cone from fuel pump pulses.
Essentially, my system goes:
Tank output->short section of line with coupler->filter -> MSD port (front, I think) -> injectors -> other port (rear?) -> regulator -> short section of line with coupler -> tank return.
The OE sending unit output and return are capped and clamped.
I did use the Atomic fuel pump power line to power the EFI pump and routed it along the lines in its own bit of conduit.
I went with a return-style system. I used an Aeromotive Phantom setup, to the right of the fuel sending unit on top of the tank. PTFE lined AN-6 hoses run the original route of the fuel lines.
For venting, I'm using the charcoal canister. The Vent port on the Phantom bulkhead is plugged.
I mounted the filter and regulator (also Aeromotive) to the floorboard. I've since moved the regulator and want to relocate the filter back to the passenger rear frame rail - it's too noisy and the floorboard acts like a subwoofer cone from fuel pump pulses.
Essentially, my system goes:
Tank output->short section of line with coupler->filter -> MSD port (front, I think) -> injectors -> other port (rear?) -> regulator -> short section of line with coupler -> tank return.
The OE sending unit output and return are capped and clamped.
I did use the Atomic fuel pump power line to power the EFI pump and routed it along the lines in its own bit of conduit.
Last edited by Shark Racer; Feb 17, 2018 at 03:16 AM.
Race Director
Joined: Jan 2000
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From: San Jose CA
I didn't go to a ref - for CARB exempt parts you shouldn't have to.
My car has the federal emissions label - no AIR pump. It's a good point, though - if you need to use an AIR pump, you'll need to make find a way to move the AIR inlets between your cat and O2 sensor, like a modern car. Unfortunately, the stock inlets will trick the O2 sensor into thinking your car runs lean.
My car has the federal emissions label - no AIR pump. It's a good point, though - if you need to use an AIR pump, you'll need to make find a way to move the AIR inlets between your cat and O2 sensor, like a modern car. Unfortunately, the stock inlets will trick the O2 sensor into thinking your car runs lean.
Team Owner
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From: altered state
St. Jude Donor '05
My car has the federal emissions label
Driving without an airpump is grounds for an impound now
Guy I know still has my old one wont sell it back.
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From: Napa Valley California
I've been looking at this system and the sniper as well. I'm smog except so I'm leaning towards the sniper.
Since my plan is to replace my fuel tank anyway my plan is to put the pump in the tank.
Makes me a bit nervous but I haven't heard of anyone having issues and figure that's where all the new cars have the fuel pumps.
Since my plan is to replace my fuel tank anyway my plan is to put the pump in the tank.
Makes me a bit nervous but I haven't heard of anyone having issues and figure that's where all the new cars have the fuel pumps.
Race Director
Joined: Jan 2000
Posts: 12,399
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From: San Jose CA
I've been looking at this system and the sniper as well. I'm smog except so I'm leaning towards the sniper.
Since my plan is to replace my fuel tank anyway my plan is to put the pump in the tank.
Makes me a bit nervous but I haven't heard of anyone having issues and figure that's where all the new cars have the fuel pumps.
Since my plan is to replace my fuel tank anyway my plan is to put the pump in the tank.
Makes me a bit nervous but I haven't heard of anyone having issues and figure that's where all the new cars have the fuel pumps.
The Holley Hydramat concept seems pretty cool, though I haven't researched it as I'd already sunk cash into Aeromotive by the time it was announced.
The fuel pump side of things is pretty easy. Running the lines was annoying.
Race Director
Joined: Jan 2000
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From: San Jose CA
I went with PTFE lined braided hose, run in the channels of the original setup.
My research and best judgement after having done this would suggest that you will have to have a junction somewhere around the rear frame kickup if using hardline. You likely can't make those angles with the body in place.