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DIY Fuel injection thread.


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Just now, BlownCorona said:

its a pretty bloody generous offer for a buck.

i flicked through the list of videos this morning and theres shit loads of stuff there. 

Signed up for that thanks for link gotta be able to learn something from it 

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On 20/04/2020 at 20:46, ajg193 said:

A couple of random numbers from my ECU that may be of interest to people considering EFI:

Idle fuel consumption

1. Fuel only with factory distributor: 14 cc/min (840 cc/hr)
2. Untimed injection with ECU controlled timing: 11 cc/min (660 cc/hr)
3. Timed semi-sequential injection with ECU controlled timing: 9 cc/min (540 cc/hr)

Calc from pressure and duty cycle? I'd be curious to see that measured on actual, so as to get an idea of how injector calibrations line up (open / shut times). I recall Roman did some work on that?

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Flow rate from Tunerstudio, over a whole tank the predicted values are within a percent or so of actual fuel consumption.

However, I don't have absolute faith that my deadtime is bang on so the accuracy at low flow rates may be questionable.

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  • 2 weeks later...

Has anyone done small engine EFI? I enquired with Ecotrons and they want US$1599 for a kit suitable for my FT500, Aliexpress has a similar looking kit for about 1/3 the price from the Super Turbo store which is a lot more appealing. 

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12 minutes ago, Willdat? said:

Has anyone done small engine EFI? I enquired with Ecotrons and they want US$1599 for a kit suitable for my FT500, Aliexpress has a similar looking kit for about 1/3 the price from the Super Turbo store which is a lot more appealing. 

Pm sending... 

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  • 2 weeks later...

so I've found a cheap ems stinger on facebook which has nudged me in the direction of injecting the 202. I know tbi or single point injection is shit but its less shit than a carb. 
Will be keeping a eye out for a EA falcoon TBI module.
Any suggestions on alternative tbi units?

The other option would be figure out how to mount 3 individual injectors on the runners without looking like shit

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The problem with that is the 202 is non crossflow so the intake and exhaust share clamping forces, if you were to make a spacer plate it would have to be for all of the ports so likely need to be steel but then would potentially increase the probability of leaking due to increased bolt length requirements.  It would also be a massive ballache to install. 

 

 

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21 minutes ago, yetchh said:

oooh thats nice! Pity its about 700 dollars over budget hah

 

I could butcher a stock manifold and use some of this

https://www.aliexpress.com/item/32902865173.html?spm=a2g0o.productlist.0.0.42836db8U7fNTJ&algo_pvid=8943ecd3-dfd3-4b56-8cdd-5495bc20379a&algo_expid=8943ecd3-dfd3-4b56-8cdd-5495bc20379a-4&btsid=0ab6d67915896941077311896e58ad&ws_ab_test=searchweb0_0,searchweb201602_,searchweb201603_

 

Edit #3

Could also go down the hoolly sniper 2 barrel or Fi tech route if  I wanted to spend lots lol.
 

 

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3 hours ago, chris r said:

so I've found a cheap ems stinger on facebook which has nudged me in the direction of injecting the 202. I know tbi or single point injection is shit but its less shit than a carb. 
Will be keeping a eye out for a EA falcoon TBI module.
Any suggestions on alternative tbi units?

The other option would be figure out how to mount 3 individual injectors on the runners without looking like shit

Read my comments a few pages back re ems stinger 

but if you buy one I have a whole stinger v4 a very short loom and a brand new long loom and new ford wasted spark 6 cyl coil pack + a Bosch 4 plug narrow/wideband that the stinger can read directly - yours for cheap if you go down that rabbit hole 

also a laptop old enough to read the help files and a serial connection 

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Just now, Transom said:

Read my comments a few pages back re ems stinger 

but if you buy one I have a whole stinger v4 a very short loom and a brand new long loom and new ford wasted spark 6 cyl coil pack + a Bosch 4 plug narrow/wideband that the stinger can read directly - yours for cheap if you go down that rabbit hole 

also a laptop old enough to read the help files and a serial connection 

What are you wanting for that lot? 

My plan initially was tbi and a Honda ignitor (becaue I've got lots of them) driving a dumb coil bank through the stock dizzy. 

Or I have also got a est dizzy so can connect that either directly to the ecu or through a gm hei module (and use that for coil control too) 

I'm very aware wasted spark and sequencial injection is muuuch better.

At the end of the day it's a crappy holden 6 and the heads/intake manifolds are garbage for flow so I'm unlikely to benefit from sequencial injection or wasted spark and I'd like to keep it as stock as possible in appearance because barry 

 

I do have access to a xp laptop with serial port so that'll work well enough for what I need

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200 entire package + courier ? / negotiable 

Long loom cost me over that 

Have had ecu live and tracking crank trigger then got to no spark/ prob ignitor issues and gave up went coil on plug and link so no guarantee on whether the ecu is fully functional...

Dell Laptop has the ems software and basemaps on it -not sure if there is a Holden 6 map on there  dead battery just plugged it in to my hp cord 

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