well, i'm not sure if this is out of ur price range, but this is what i have planned:
http://www.massfloefi.com/
matt
http://www.massfloefi.com/
matt
For TBI, the fuel pressure regulator is built into the TBI unit so you won't need to purchase a regulator. Also consider how you are going to do the TPS. With TBI the TPS is also built into the unit.
Fuel pump will be the same with either system, so I wouldn't factor that into the equation.
When I was making this decision, In the end I came to the conclusion that on a stock motor using factory EFI equipment from a 351W truck would be best. But, on modified engine the cost of the intake, injectors, fuel rails, etc.... to support the same HP level the TBI system was much cheaper. I also like how it keeps the stock "carb'd" look. When I pop the hood 9 out of 10 people think it's a carb'd engine.
I would have liked to go multiport, but for the little benifit it would have given me over TBI it wasn't nearly worth the added cost.
Fuel pump will be the same with either system, so I wouldn't factor that into the equation.
When I was making this decision, In the end I came to the conclusion that on a stock motor using factory EFI equipment from a 351W truck would be best. But, on modified engine the cost of the intake, injectors, fuel rails, etc.... to support the same HP level the TBI system was much cheaper. I also like how it keeps the stock "carb'd" look. When I pop the hood 9 out of 10 people think it's a carb'd engine.
I would have liked to go multiport, but for the little benifit it would have given me over TBI it wasn't nearly worth the added cost.
I know you're on a budget but for simplicity If I was to go EFI I'd use the BOSS EFI kit
http://www.retrotekspeed.com/
I also saw some article on a similar setup, simple carb sized throttle body efi kit with 2 very short fuel rails with 4 conventional injectors on both sides of the throttle body. It bolted to carb intakes the same as the BOSS EFI kit.
http://www.retrotekspeed.com/
I also saw some article on a similar setup, simple carb sized throttle body efi kit with 2 very short fuel rails with 4 conventional injectors on both sides of the throttle body. It bolted to carb intakes the same as the BOSS EFI kit.
For GM TBI info I'd suggest looking over at www.thirdgen.org. They've got a TBI section and there's alot of good info in the Stickies alone.
But since everyone else is ignoring the Budget part; I saw this in the latest HotRod mag: Look at the item at the top right. It's $698 from www.Wilsonmanifolds.com and it can be used with your MS ECU.
But since everyone else is ignoring the Budget part; I saw this in the latest HotRod mag: Look at the item at the top right. It's $698 from www.Wilsonmanifolds.com and it can be used with your MS ECU.
Yes I have the holly 900cfm and it works great. It also has the Idle Air Control solenoid built in. Just keep your eye on ebay, mine was $340 and looked like it had never been used. Also make sure to get one that doesn't have progressive linkage for the secondaries, it makes tuneing much more difficult.
I also looked at those 2bbl TBI's. I can't see them being good for much more than 300hp. You might be able to find a way to mount 2 of them, but it would be alot of work and wouldn't save you much in the end.
To tune for best fuel economy and power, you'll want a wideband. It's much harder to do with a narrow band O2.
Your TBI unit will be the same as mine (900 cfm with 85pph injectors) You can swap out the injectors for the 55pph injectors if you want. They come in the 700cfm TBI's and will fit in no problem. However, I've found that I have no problems with my 85pph injectors in my mild to moderate 351W.
You'll want the v3 PCB. The real choice is MSI or MSII. I chose the MSII, there's not a large amount of benifit to the MSII at the moment, but with future development the MSII will soon be far superior.
Your TBI unit will be the same as mine (900 cfm with 85pph injectors) You can swap out the injectors for the 55pph injectors if you want. They come in the 700cfm TBI's and will fit in no problem. However, I've found that I have no problems with my 85pph injectors in my mild to moderate 351W.
You'll want the v3 PCB. The real choice is MSI or MSII. I chose the MSII, there's not a large amount of benifit to the MSII at the moment, but with future development the MSII will soon be far superior.
Yes, you would need a controller to go with the wideband. I bought a Innovative LC1 for $199 and it came with the sensor.
The MSII has a CAN bus which is an automotive standard for communication between electronics.
Currently they are developing a Router board, as well as a GPIO (General purpose input/output) board that will communicate via CAN. The router board will allow for sequential injection as well as COP (coil over plug). The GPIO board will be just a set of general purpose inputs/outputs with built in templates for things like multi-speed fan control, electronic transmission contol, nitrous control, launch control, traction control, TQ lockup, etc.
http://www.auto-nomics.com/ has a few options for affordable throttle bodies. Much cheaper then, most NEW TB's.