Comments on: DIY Fuel Injection Conversion

By: radio watch

radio watch — Sun, 10 Oct 2010 20:19:38 +0000

Great write-up! I have already Megasquirted my ‘95 Probe GT (and turbocharged it to over 300whp reliably).

I have a 1980 MGB and have been thinking about Megasquirting it to get rid of the very problematic (primarily due to the “automatic” choke) single Zenith carb.

Since my 1.8L was not put into cars (to my knowledge) past 1980, I am planning on making a custom intake manifold and use some sort of TBI from a similar sized motor to avoid fabricating fuel rails.

I found your site because of Bob’s mentioning of the surge tank and that’s what I was searching for to avoid having to put baffles in my 26 year old gas tank.

Thanks for the write-up. And yes, DIYAutoTune.com is a great site with great customer service!

By: Find drycell batteries

Find drycell batteries — Fri, 08 Oct 2010 00:48:03 +0000

It’s a surge tank …. don’t know why I couldn’t remember that!

You can build one pretty easily, or there are some commercially available options.

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By: steve mccormick

steve mccormick — Sun, 01 Feb 2009 18:07:31 +0000

i am looking for a way to make-get a control module to add-replace the ecm for my motorcycle. It is a fuel injected (factory) 2003 honda VTX 1800 2 cylinder v twin. I would like to be able to adjust the ignition timing, and mixture, and possibly the rev limiter. thx

By: steve mccormick

steve mccormick — Sun, 01 Feb 2009 18:07:20 +0000

By: steve mccormick

steve mccormick — Sun, 01 Feb 2009 18:07:17 +0000

By: vic

vic — Mon, 16 Jun 2008 03:05:02 +0000

David- Any chance the medusa manifold off the 1984 318i BMW will port match to the MGB X-flow???
Has anybody found a match to fit the x-flow, since I do not want to go TMW, and rather prefer ITB’s (using the 650GRX motorcycle EFI setup featuring 38 mm TB).? Vic

By: efi conversion... please help - Benzworld.org - Mercedes Benz Discussion Forum

efi conversion... please help - Benzworld.org - Mercedes Benz Discussion Forum — Wed, 30 Apr 2008 02:00:47 +0000

[...] is how everything connects up http://www.finkbuilt.com/static/imag…megaWiring.gif DIY for a BMW Finkbuilt � Blog Archive � DIY Fuel Injection Conversion I have pictures of everything but the other website is down so i cant give you a [...]

By: DIY Fuel Injection Conversion | PyroElectro - News, Projects & Tutorials

Thu, 10 Apr 2008 07:41:28 +0000

[...] There are lots of pictures & stats to help you through the installation process. PyroFactor: Read Permalink | Email This [...]

By: Steve

Steve — Thu, 18 Oct 2007 06:30:19 +0000

Danny,

Yeah, the 320i intake will bolt on, but you run into some issues fitting the fuel rail and injectors. See this link for details:

http://www.hbci.com/~tskwiot/2002.html

By: Danny

Danny — Tue, 16 Oct 2007 15:55:29 +0000

would a 320i intake manifold bolt right up to the 2002 head? or will only the 318i?

By: vic

vic — Sun, 01 Jul 2007 18:53:59 +0000

David- I’ve started my DIYEFI on the cross flowed MGB. Any chance I could get your proto-map soas to get up and running? I’m instally the EDIS first, then the EFI. Has your tach issue been resolved?

By: Steve

Steve — Tue, 13 Mar 2007 19:50:07 +0000

Tom -

Yeah, my tach worked great once I put a resistor in the circuit, but I think that mine was a lower ohm value. I just used what I had on hand out of desperation and it worked. I think that it was 15K.

steve

By: Tom

Tom — Mon, 12 Mar 2007 23:23:53 +0000

Did you ever resolve your tach issue?

I’ve tried bridge D1 and D2 with 100K resistor. My TACH works up to about 2500 and then drops.

By: David Ellis

David Ellis — Tue, 02 Jan 2007 23:10:16 +0000

Vic – I’m still working out some small bugs, but the initial software set-up, configuration, and mapping went better than I had ever imagined. I haven’t had it on a dyno yet but by the way it pulls off the line and accelerates at highway speeds my gut feeling is that it has well over 100 HP now. Most of that power is attributed to the engine build-out, not EFI. The engine starts immediatly no matter what temperature it is and stops as soon as I turn the key off. No dieseling or run-on at all. And I’m amazed at how smooth the engine runs too. On the original restoration back in 1999, I had the engine bored out to .40 over, everything was balances, and the flywheel was lightened. When I put on the X-flow head I had it polished and ported to the DCOE manifold so it flows as well as it can. I’ve not seen a huge jump in fuel economy yet but I expect that will show up after dyno testing. The bug I’m working on now is in the tachometer. Seems the tach is showing only about half the engine rpm. I think it needs more electronic stuff.

Thanks for asking,

David

By: vic myers

vic myers — Tue, 19 Dec 2006 18:18:32 +0000

David- Tell us more more more. How is that frankenBee running. MayGawd, a EFI Cross-flow….must be heaven on earth. Can you share some detail on engine specs before and after MegaSquirt? Thanx, Vic BBS MGB Technical Threads has lots in archive on swirl pots.

By: David Ellis

David Ellis — Wed, 29 Nov 2006 22:48:09 +0000

I Megasquirted my ‘73 MGB earlier this year after about 18 months of R & D. My system has an MSX cross flow head (1 intake port per cylinder please-no siamese problem here), a Pierce dual DCOE intake manifold, 2-TWM throttle bodies (designed as direct replacements for Weber carburetors). Since all the throttle bodies and manifold equipment are now located over the distributor, I opted to convert to a EDIS ignition system from an early 90’s Ford Escort, thus enabling me to tune and time the engine with the Megatune software on my laptop computer.

So much for background. To Bob’s point regarding the fuel system. Sloshing fuel and sucking air is never good for any EFI system. the surge tank and Bosch high pressure fuel pump from a fuel injected mid to late 80’s VW Jetta or Golf is a geat add-on system. It fits in the right side battery box perfectly. It’s designed as an external surge tank so it has all the supply and return fuel line attach points to and from the fuel tank and to and from the fuel rail. I consider adapting the surge tank to fit in my ‘B’ was one of several good solutions to potential unreliability problems down the road. Upgrading the 30 amp rebuilt Lucas alternator to a Saturn 110 amp model is another one.

Happy squirting,
David

By: Steve

Steve — Thu, 02 Nov 2006 05:26:58 +0000

Jim,

There are lots of diagrams on the megasquirt site.

AND, please let me know when you get your project done, it sounds great!

steve

By: Jim Fedor

Jim Fedor — Tue, 15 Aug 2006 23:02:27 +0000

I started building a Megasquirt last year. I am putting it on a 37 ford flat head engine that I am putting in a motorcycle. I am trying to hook up the sensors and I wish I had a really good schematic for it. Any help? Jim

By: Azz

Azz — Tue, 25 Jul 2006 23:57:46 +0000

hey sounds like a good project but was wondering is well, i have a 94 lancer carb and we are about to strip my mates nissan pinty is there any am i able to jus take all of his efi part and put them in my lancer or am i gonna have to get more components