injection

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brngrhd

Member
Well I'm pretty sure that I will be going to EFI...... I plan on running a direct port nitrous so I hope to have room for injectors and fogger nozzles..... what system do you recomend? I know there is a guy that runs older holley commander 950 and milled 1/2 inch off the carb pad to make it fit under the L88 hood.... The new holley system does a lots of cool things like control up to 4 stages of nitrous and can do boost, water/meth injection..... tons of stuff.

then on the other hand a guy around hre wants to build a system using an AEM ems...... he said he can do that system with injectors for about 2200 then i buy the holley strip dominator that will fit under the hood......
 
also there is the fast EZ EFI i kind of like that one too since i can just bolt it on to the holley strip dominator intake and put the fogger nozzles below... it does auto tune so even though FAST says it is not intended for and type of power adder i have talked to one of the guys that does the programing and development type of stuff for fast and he said it is fine as long as you change your target A/F to the needed setting...... thoughts?
 
ok before we get into this , let me point out with injection & nitrous two of the factors that's frequently overlooked, is the main fuel injector flow capacity,even if you use direct port nitrous injection, with its own separate fuel supply there are times during the transition from N/A to nitrous use,when having some extra fuel flow capacity that the cpu can throw in to richen the fuel/air mix is a safety factor that's nice to have.
and that a low restriction exhaust and a cam DESIGNED for nitrous use will provide you with basically free hp compared to use of a standard N/A cams results when your using nitrous,
HOLLEY used to sell (AND STILL MAY)a PIGGYBACK nitrous nozzle that you seat between the intake bung and the fuel injectors, so you can add nitrous very easily, the only major mod is adapting the fuel rail mount to a higher location to allow room and plumbing the nitrous jet adapters
THESE GUYS SELL A SIMILAR ADAPTER

http://www.nitrousdirect.com/nozzles.html
cupnozzlesmall.jpg

cupnozzlelarge.jpg


but at the cost of a bit of hp/tq when your not using the nitrous, as a nitrous grind is designed to maximize the extra cylinder pressure.
Id also suggest sticking to a single supplier for ALL or ALMOST ALL of the components you select,
I have started collecting the HOLLEY components personally, for my BBC engine swap
ID also strongly suggest you talk with DOUG FLYNN , hes a holley EFI/NITROUS ENGINEER

http://www.holley.com/TechService/Library.asp

http://www.streetlegaltv.com/forum/nitr ... -3389.html
one reason is that DOUG FLYNN is one of holleys engineers and he answers questions over at the EFI section here

http://www.chevytalk.org/fusionbb/showf ... Injection/

dougflynn@holley.com

http://www.holley.com/13700BNOS.asp
now obviously you've got choices and compromises to make, and careful measurement and planing , for maintaining the required clearances will be mandatory,personally Id suggest carefully welded bungs on the runners tapped for 8 individual foggers, and obviously they need to come in from the side at about a 45 degree angle to give the necessary clearance to the efi injectors, luckily the holley efi intake has the room for carefully welded bungs to mount foggers near the injector bungs and under the mounted fuel rails but its tight
large13700NOS.jpg


http://www.holley.com/HolleyEFIBrochure/

efiintake.jpg



large9900-171.jpg

efisystem.jpg


large9901-201.jpg
 
well i already have a wilson pro-flow direct port fogger wet system and as have talked with doug a little on chevelles.com... my cam is a UDHarold design and has 112LSA..... as far as injection i really like the idea of the EZ efi setup from fast...... auto tuning so when the motor is on the bottle you have it set to run say 11.8 and it will hold that A/F when you turn the bottle off you can just re set the target to what you want n/a.... and like i said then there is no need to worry about nozzle and injector placement..... I do really like that new holley stuff but man i don't know how your going to fit the fogger nozzles in there..... are you saying that you would have them almost kind of next to the injectors turned towards the intake valve?
 
when I was test fitting the foggers it became obvious that it would require some custom drilling and welding to get the fogger nozzles to fit and I seriously considered use of a carb nitrous plate under the THROTTLE BODY , but after careful measurement I found that it could be made to work with a welded bung (not ideal but functional,now I can,t, tell you exact results because Im on a very strict budget being retired, and Ill post pictures when I get that project completed ) which its not at this time.but yes Id be welding a bung near the EFI injector bung at a slight outward angle to clear the efi fuel rail and mount the solenoids,It won,t be overly pretty and compact but IM sure it will function and flow when IM done
 
The EZ EFI is not what you want to run a nitrous enigne on. Trust me. I've run it with 8 widebands.

If you are serious about EFI and nitrous, you must use a laptop programmable system.
 
DOUG?
Id love your input, as my long term goal here, is,putting together a dependable weekend toy
what EFI controller would you suggest for a EFI intake like posted above, that would work well in a weekend warrior car that will only occasionally use a 200-250hp nitrous shot, with added nitrous fogger system added, to the intake?
Like my current car I spend 95% or more of my time cruising so thats the main concern (not mileage, just smooth care free operation)but I also want the nitrous to be available and trouble free and durable
Ive had the intake, 60 lb injectors, fuel rails etc for awhile now and Ive pretty much figured how to weld bungs and install the fogger nozzles and route the lines but I don,t have the controller yet
BTW its going on a 598 BBC with about 10:1 cp, 360cc trickflow bbc
rectangle port heads

http://www.summitracing.com/parts/TFS-4141T808/
and a hydraulic roller cam in the 240 dur range

http://schneidercams.com/300-08BBCHydraulicRoller.aspx

a 4L80e trans with a 3200 stall converter and 4.11 rear gears, in a 3400 lb vette
 
Doug F said:
The EZ EFI is not what you want to run a nitrous enigne on. Trust me. I've run it with 8 widebands.

If you are serious about EFI and nitrous, you must use a laptop programmable system.
Click to expand...

thanks for the unput doug...... one question how the hell am i going to fit the fogger nozzles in and around the injectors... i guess i could get these http://www.nitrousexpress.com/product-d ... php?id=671 but man like i need to spend that kind of money on top of going EFI. plus i already have over half the kit for a direct port fogger system.
 
Doug F said:
The EZ EFI is not what you want to run a nitrous enigne on. Trust me. I've run it with 8 widebands.

If you are serious about EFI and nitrous, you must use a laptop programmable system.
Click to expand...


ok i thought about this and i got to ask why not? it is the same or better then a carb right... better atomization and better control of fuel so why not..... carbs and nitrous have been used together for many many many years and it works. Why will this not work as good as a carb does?
 
brngrhd said:
Doug F said:
The EZ EFI is not what you want to run a nitrous enigne on. Trust me. I've run it with 8 widebands.

If you are serious about EFI and nitrous, you must use a laptop programmable system.
Click to expand...


ok i thought about this and i got to ask why not? it is the same or better then a carb right... better atomization and better control of fuel so why not..... carbs and nitrous have been used together for many many many years and it works. Why will this not work as good as a carb does?
Click to expand...


bump for an answer
 
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