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RB fuel injection questions
#864843
11/27/10 02:58 PM
11/27/10 02:58 PM
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Joined: Jun 2010
Posts: 42
napa, ca
rice2muscle
OP
member
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OP
member
Joined: Jun 2010
Posts: 42
napa, ca
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I am toying with the idea of converting my 68 rb 440 (540) cuda to fuel injection. I have done some research on the units avaliable but all i can seem to find is testimonial from users on their site...
Im curious what anyone here has done, that works and is capable of big hp (650-800). The self tuning fast xfi says under 600, so that is out...
Plus its like 4,000 bucks...
i'd like to see if building a kit is cheaper like under 1500
I have a honda that i have been tuning, and it has really opened my eyes to how awesome FI really is, that complete control of fuel at every rpm at and every engine load along with every engine temp!!!!! infinate adjustability that is percise!!!! I want it!
So any info would be awesome guys thanks.
Last edited by rice2muscle; 11/27/10 03:17 PM.
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Re: RB fuel injection questions
[Re: rice2muscle]
#864845
11/27/10 03:56 PM
11/27/10 03:56 PM
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Joined: Jan 2003
Posts: 344
Burlington, Ontario Canada
Dave_S
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 344
Burlington, Ontario Canada
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Welcome! I love my MegaSquirt. It can do almost evrything the "Big boys" can and is very inexpensive. If you are so inclined you can buy a DIY kit for about $240 or a fully assembled controller for $420 from http://www.diyautotune.com/. If you buy from them you get full tech support. They are involved in a DragPak Challenger too. I've had MegaSquirt on my race car for four years now and I love it. The system is capable of unlimited HP as long as the rest of the fuel system is up to it. The rest of the system can be expensive, but if your resourseful you can do it with out breaking the bank. www.msefi.comGood Luck Dave PS Love your handle!
Dave Stillie
'73 Swinger
5.7 Hemi, 88mm turbo, powerglide, cal-tracs & 8 3/4
Mega-Squirt EFI
[email]8.93@149
[/email]
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Re: RB fuel injection questions
[Re: Cab_Burge]
#864847
11/27/10 05:08 PM
11/27/10 05:08 PM
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Joined: Jan 2003
Posts: 344
Burlington, Ontario Canada
Dave_S
enthusiast
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enthusiast
Joined: Jan 2003
Posts: 344
Burlington, Ontario Canada
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Well like I said about not breaking the bank, those throttle bodies are from a 3.5 litre Dodge Intrepid (68mm i think, from the junk-yard) The intake lower was an e-bay find (35$) The plenum and fuel rails I made myself. The fuel injectors are Mopar Performance Super 60 +40 (40$ ea)
The car starts and runs alot like my wife's minivan! except it runs almost 10 flat @ 135! 60' times are kinda weak (1.42) but I hope that my front susp. mods will help that.
When I first put it all together I was worried the throttle response would be too "twitchy", but that is not the case at all. I calculate the cfm for all three t/b's @ 1500.
Dave Stillie
'73 Swinger
5.7 Hemi, 88mm turbo, powerglide, cal-tracs & 8 3/4
Mega-Squirt EFI
[email]8.93@149
[/email]
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Re: RB fuel injection questions
[Re: rice2muscle]
#864852
11/30/10 09:47 PM
11/30/10 09:47 PM
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Joined: Jan 2003
Posts: 16,930
NC
440Jim
I Live Here
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I Live Here
Joined: Jan 2003
Posts: 16,930
NC
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Quote:
I am toying with the idea of converting my 68 rb 440 (540) cuda to fuel injection.
... and is capable of big hp (650-800).
With 540 CID, you don't need electronic fuel injection to make that horsepower. The heads make power, and a simple, cheap (less than $2000) mechanical fuel injection can do it (ie. Rons fuel injection http://ronsfuel.com ) That is what I run.
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Re: RB fuel injection questions
[Re: rice2muscle]
#864853
11/30/10 10:45 PM
11/30/10 10:45 PM
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Joined: May 2004
Posts: 12,415
Taxes & Virus's R-US, NY
Dragula
I Live Here
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I Live Here
Joined: May 2004
Posts: 12,415
Taxes & Virus's R-US, NY
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Quote:
I am toying with the idea of converting my 68 rb 440 (540) cuda to fuel injection. I have done some research on the units avaliable but all i can seem to find is testimonial from users on their site...
Im curious what anyone here has done, that works and is capable of big hp (650-800). The self tuning fast xfi says under 600, so that is out...
Plus its like 4,000 bucks...
i'd like to see if building a kit is cheaper like under 1500
I have a honda that i have been tuning, and it has really opened my eyes to how awesome FI really is, that complete control of fuel at every rpm at and every engine load along with every engine temp!!!!! infinate adjustability that is percise!!!! I want it!
So any info would be awesome guys thanks.
Well, EFI isn't cheap. That said, the EZ-efi set-up can be pushed to that level with either twin TB's or the 8 injectors and one throttle plate. Its self learning, and as long as you N/A, your good. I have the single EZ-efi TB on my Pro street D100 and the full Classic FAST on my Cuda. Both are awesome. The self learning update on the new XFI, I didn't realize it has an HP limit. The EZ-efi doesn't require a computer, and is very easy to set-up and tune, and by tune, I mean, just drive it.
Last edited by Dragula; 11/30/10 10:47 PM.
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Re: RB fuel injection questions
[Re: rice2muscle]
#864857
12/02/10 06:22 AM
12/02/10 06:22 AM
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Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
DaytonaTurbo
Too Many Posts
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Too Many Posts
Joined: Feb 2003
Posts: 21,318
Manitoba, Canada
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Quote:
has anyone else done a megasquirt on their project??
I am. I've got the controller assembled and 95% of the parts on hand. But my car is in pieces right now and am hoping for a spring completion. Mine's going to be a 440 with a centrifugal supercharger. I'm waiting for one company to come out with an upgrade they have in the works for my supercharger so I should do about 600hp and at least that much torq. The megasquirt is the only way I could conceivably stay within my efi budgetary requirements.
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Re: RB fuel injection questions
[Re: DaytonaTurbo]
#864858
12/02/10 11:08 AM
12/02/10 11:08 AM
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Joined: Nov 2006
Posts: 1,090
north cakalaky
instigator
super stock
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super stock
Joined: Nov 2006
Posts: 1,090
north cakalaky
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I'm replacing my possibly broke and non communicating Accel dfi with a megasquirt 2 this weekend....
65 Barracuda
All aluminum Indy HEMI with some boost!
COMING TO A TRACK NEAR YOU!
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Re: RB fuel injection questions
[Re: instigator]
#864860
12/03/10 01:45 PM
12/03/10 01:45 PM
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Joined: Jan 2003
Posts: 965
Odessa, Fl
blowndart
super stock
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super stock
Joined: Jan 2003
Posts: 965
Odessa, Fl
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Quote:
I'm replacing my possibly broke and non communicating Accel dfi with a megasquirt 2 this weekend....
Been there, did that. 
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Re: RB fuel injection questions
[Re: rice2muscle]
#864861
12/03/10 01:46 PM
12/03/10 01:46 PM
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Joined: Jan 2003
Posts: 965
Odessa, Fl
blowndart
super stock
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super stock
Joined: Jan 2003
Posts: 965
Odessa, Fl
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Quote:
so for you guys running megasquirt, are you running the fuel only? or are u running it with a distributor mod so ur timing is through the ecu too?
Mine controls fuel and ignition. 
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