1st Generation Specific (1979-1985) 1979-1985 Discussion including performance modifications and technical support sections

MegaFuel EFI kit for the 12a "progress report"

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Old Sep 23, 2003 | 12:16 AM
  #26  
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From: Troy,Mi
Originally posted by rotary emotions
The stupid point for me and all other overseas guys is that we'll always end up paying about twice what you ask... Shipping+import taxes...
When I look at this setup, and then the R&P conversion, I think like: wow, that's it! But I just don't know about those prices. Not your prices, but those that the state will ask me...
For example, for Mazdatrix header flanges (one engine/header, one header/exhaust flange) I paid almost $50 + $50 shipping, +$30 import taxes! That makes $130 for flanges. You know what I mean with expensive parts?
I hear ya, big time.

people in canada always bitch when they bid on my ebay items then I tell them the shipping cost, they act like I am just making up shipping cost because I get a rise out of it.

So now when people e-mail me and ask if I will ship to canada and what the cost are I say " sure the cost is 1.5 million, your first born, and your soul"

they usally get the picture
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Old Sep 23, 2003 | 01:33 AM
  #27  
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wow this sounds cool. Put me down as interested. I would love to compare this to my holley setup. Power increases are always a good thing. If you can do that and at the same time increase throttle response... you da man!
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Old Sep 23, 2003 | 10:33 AM
  #28  
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Originally posted by FD Racer
wow this sounds cool. Put me down as interested. I would love to compare this to my holley setup. Power increases are always a good thing. If you can do that and at the same time increase throttle response... you da man!
Not to toot my own horn but this setup will kill a holley setup.

I havent been in a carbed car that has the throttle response a FI car has.

The FI setup should have a much more even power band over the carbed, and more horsepower throughout.
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Old Sep 23, 2003 | 11:28 AM
  #29  
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If it's finished I'll be very intrested...
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Old Sep 23, 2003 | 12:09 PM
  #30  
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weird, I just got back from lunch, thinking about how I wish I could afford an EFI system. Then this was the first thread I read. Anyway, im glad to see that someone's taking the initiative to work out a megasquirt 12a system that can be made in mass quantities, using stock parts.
I've only read about the megasquirt ECU a little, but I heard that it's not likely that ignition features for the rotary will be added. Maybe if you can sell enough of these, they will realize there's a market for it. After you complete this, do you have any plans to incorporate the ignition features of the new megasquirt if it becomes compatible?
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Old Sep 23, 2003 | 04:14 PM
  #31  
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Originally posted by Maguire
weird, I just got back from lunch, thinking about how I wish I could afford an EFI system. Then this was the first thread I read. Anyway, im glad to see that someone's taking the initiative to work out a megasquirt 12a system that can be made in mass quantities, using stock parts.
I've only read about the megasquirt ECU a little, but I heard that it's not likely that ignition features for the rotary will be added. Maybe if you can sell enough of these, they will realize there's a market for it. After you complete this, do you have any plans to incorporate the ignition features of the new megasquirt if it becomes compatible?
I dont see why it would be necessary when the kit I am designing will be used on the 12a.

The 12a does not need an ignition ecu, the dizzy on the 12a is comepetly independant of the ecu and I dont think the gain would be significant enough to incorporate the 13 crank trigger system.

On a cost to performance ratio at least.

I am sure you could spend the same amount on a MSD 6a and three blaster 2 coils to run a direct fire system and get more performance for the dollar when compaired to a stock 2nd gen ignition system.
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Old Sep 23, 2003 | 05:45 PM
  #32  
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Actually I'm well on the way to getting some ignition code bolted together for the MS. Initially for series V coil packs but other setups will be possible.

Advice. If you are building a custom lower manifold, ditch everything else and use the throttle bodies off a GSXR600. $60-80 on ebay. PERFECT spacing for a 12A, all fuel rails, TPS, injectors already on it. Either set at 45° or as downdraft. Will flow WAY better than the nasty factory inlets. Was on my summer to do list, but my 13B powered Westfield has been taking up all my time so haven't been able to get the 12A in my series 2 rebuilt. A casting would be $60 if you got 10 or so made up at once. $120 for the MS and you have a seriously nice EFI for $240 that will outdo a 48IDA setup.

Bill
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Old Sep 23, 2003 | 06:01 PM
  #33  
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From: Troy,Mi
Originally posted by bill Shurvinton
Actually I'm well on the way to getting some ignition code bolted together for the MS. Initially for series V coil packs but other setups will be possible.

Advice. If you are building a custom lower manifold, ditch everything else and use the throttle bodies off a GSXR600. $60-80 on ebay. PERFECT spacing for a 12A, all fuel rails, TPS, injectors already on it. Either set at 45° or as downdraft. Will flow WAY better than the nasty factory inlets. Was on my summer to do list, but my 13B powered Westfield has been taking up all my time so haven't been able to get the 12A in my series 2 rebuilt. A casting would be $60 if you got 10 or so made up at once. $120 for the MS and you have a seriously nice EFI for $240 that will outdo a 48IDA setup.

Bill

will look into it
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Old Sep 23, 2003 | 07:36 PM
  #34  
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I want the MegaSquirt kit for my 13B...
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Old Sep 23, 2003 | 08:21 PM
  #35  
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V8kilr,
Whats your plan for the OMP? Anyway to get some oil injection on decel?
On a carb with premixing you still get oil/gas in there on decel since the engine still pulls gas threw the carb even with the throttle plates closed. But on FI, when the injectors are on zero duty no oil gets in there.
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Old Sep 23, 2003 | 09:10 PM
  #36  
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From: Troy,Mi
Originally posted by smnc
I want the MegaSquirt kit for my 13B...

We will be working on a GSL-SE kit after the 12a kit
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Old Sep 23, 2003 | 09:17 PM
  #37  
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From: Troy,Mi
Originally posted by FD Racer
V8kilr,
Whats your plan for the OMP? Anyway to get some oil injection on decel?
On a carb with premixing you still get oil/gas in there on decel since the engine still pulls gas threw the carb even with the throttle plates closed. But on FI, when the injectors are on zero duty no oil gets in there.

I will use omp injectors from a 13b most likely, havent figured it all out yet, it might be complicated or simple.

I am running premix right now just until everything else is wrapped up.
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Old Sep 23, 2003 | 09:17 PM
  #38  
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Cool!

I'm not much of a 2nd gen expert, so what's the diff between a S4 and S5 intake?
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Old Sep 23, 2003 | 10:20 PM
  #39  
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From: Torrance, CA
what about using a throttle body from TWM?

http://www.twminduction.com/Throttle...leBody-FR.html

http://www.twminduction.com/Throttle...eBody2900.html
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Old Sep 23, 2003 | 10:59 PM
  #40  
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From: Troy,Mi
Originally posted by FD Racer
what about using a throttle body from TWM?

http://www.twminduction.com/Throttle...leBody-FR.html

http://www.twminduction.com/Throttle...eBody2900.html
cost
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Old Sep 23, 2003 | 11:00 PM
  #41  
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From: Troy,Mi
Originally posted by smnc
Cool!

I'm not much of a 2nd gen expert, so what's the diff between a S4 and S5 intake?
search the 2nd gen section of the forum
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Old Sep 24, 2003 | 09:10 AM
  #42  
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Originally posted by V8kilr
I dont see why it would be necessary when the kit I am designing will be used on the 12a.

The 12a does not need an ignition ecu, the dizzy on the 12a is comepetly independant of the ecu and I dont think the gain would be significant enough to incorporate the 13 crank trigger system.

On a cost to performance ratio at least.

I am sure you could spend the same amount on a MSD 6a and three blaster 2 coils to run a direct fire system and get more performance for the dollar when compaired to a stock 2nd gen ignition system.
I have to agree that on a N/A system it wouldnt be worth the extra trouble. Seeing how most people will be using it on that application, and low cost is the major goal here. But, if the technology is there, it could be useful on a turbo application.
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Old Sep 24, 2003 | 10:23 AM
  #43  
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okay..... so yours saying a holley setup isnt worth it on a n/a 12a? this is gonna be a bad *** kit, I really believe it will......... i cant wait to see some dyno numbers..... cause i know that it will pull some impressive numbers...... and its fully tunable to respond with any mods you may have or plan to have.... can be tuned for fuel economy or full out racing........ think about it.... you can tune it to go on a 500 mile trip and not use alot of gas while cruising, or you can tune it to eat as much as it can take without choking it..... check out the megasquirt software... think about how bad *** if would be to use on your car...... this is gonna be BAD ***!
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Old Sep 24, 2003 | 10:37 AM
  #44  
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Can you change pre-set settings while driving?
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Old Sep 24, 2003 | 10:51 AM
  #45  
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Bill S:

"Advice. If you are building a custom lower manifold, ditch everything else and use the throttle bodies off a GSXR600. $60-80 on ebay. PERFECT spacing for a 12A, all fuel rails, TPS, injectors already on it. Either set at 45° or as downdraft. Will flow WAY better than the nasty factory inlets. Was on my summer to do list, but my 13B powered Westfield has been taking up all my time so haven't been able to get the 12A in my series 2 rebuilt. A casting would be $60 if you got 10 or so made up at once. $120 for the MS and you have a seriously nice EFI for $240 that will outdo a 48IDA setup.
"


You mean, like this?

http://cgi.ebay.com/ebaymotors/ws/eB...tem=2434285676

B
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Old Sep 26, 2003 | 07:04 AM
  #46  
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Well, I have acquired an s5 intake and injectors. Just tell me when it is ready and I am there.
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Old Sep 26, 2003 | 07:28 PM
  #47  
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Originally posted by JDuncan
Well, I have acquired an s5 intake and injectors. Just tell me when it is ready and I am there.
Its still gonna be a little bit, have much more work to do and alot of other pruducts that are still in the works.
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Old Sep 26, 2003 | 08:34 PM
  #48  
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well this kinda sucks, i want this kit but live in aus, and if shippings that much to canada, imagine here. anything like it available ever in aus??
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Old Sep 26, 2003 | 10:58 PM
  #49  
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put me down as interested. It would have to wait till after i get a rack and pinion kit, but I'm interested.
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Old Sep 27, 2003 | 03:11 PM
  #50  
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There are a number of ways to skin the rotary EFI cat. I've been involved in 4 rotary EFI installs now and all are different and all work well. Jimmy shouldn't winge though. There is an active Aus megasquirt group with their own list who sort out buys of the computers (local component sources etc) and you can get some great manifolds and throttle bodies cheaply out there.

If you have a 12A and a 13B manifold, don't forget that 12A/13B adaptor plates are readily available and cheap. I use one as I have a 12A SU manifold on my 13B 4 port with a 50DCOE TB grafted on. If the 12A is remaining stock then you only need a pair of the 460cc injectors run at 3bar to fuel you up to around 160HP.

If you can stretch to an IDA manifold (about $100 if you shop around) and you know a tame fabricator who owes you a favour then you can graft a pair of the GSR750 bodies on. These are 48mm in tapering to 41mm out, but the butterfly is 45mm so you can open them out with a dremel. now a 48IDA carb usually has a 43mm choke, so you can see this will flow more than enough for even a seriously ported engine.

Whatever you do, be adventurous. The kick with MS is not that its cheap, but that you did it all yourself and in the process you will learn more about your engine than you might believe.

Bill
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