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Discussion Starter #1
Hi all,

I have a 1968 Mustang Convertible 289 V8. I replaced the original carbs to Holleys and electric choke. I have never been happy with the cold start of the car and am not happy with the 2-3 minutes it takes before I'm able to drive off. Has anyone had their car converted to fuel injection? In particular the simple and cheap option like the Holly Sniper? If so would you recommend it? Can you direct me to a mechanic in London that can do the conversion?

I have my car booked with an American car specialist who will be replacing the electric choke for me on the 9th of June. I called and spoke to them about the fuel injection conversion but they said they wouldn't recommend it nor would they carry out the conversion. Your thoughts please.
Thank you in advance.
M
 

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I run Holley Sniper with the Holley HyperSpark ignition in my 70 challenger and have no issues with it. Performance & responsiveness is great. Spendy though (~$2.5K for the whole set up including EFI tank). 2+ years already and no issues but you need to be careful how you wire it since these things are highly susceptible to EMI/RFI noise. Most likely cause of anyone having issue with their Holley Sniper is EMI/RFI noise screwing up the ECU.

Best thing is I jump in turn the key and the engine starts, no waiting. I love my classic mustangs with the carb set up but I'm not a fan of the time it takes to start after sitting for anything over a week.
 

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I installed it in my '66 289 and likewise have not had any problems. I just got the basic kit (no pump, hoses, etc) and the Holley tank with in-tank pump. With the high pressure hoses I installed, I probably have around $2K in it.
 

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A lot of people have swapped over to efi. Either Holley Sniper or FiTech. Either one are great choices. Just do a search here and you will see a ton of topics.

Sorry, I can not help with a London shop. Maybe start a new topic with that as a subject? But, most shops should be able to perform the swap. It is pretty straight forward. My FiTech swap was 6 wires and the o2 sensor welded into the exhaust. The hardest part for someone not knowing Mustangs is probably the ignition wire.

More details about your car please. What kind of ignition?
 

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Discussion Starter #5
Thank you all for your comments. I imported the car from Texas USA a couple of your ago. It has Autolite Electronic Ignition Conversion Kit. I'm getting around 14 miles to the gallon with the Holley carbs, what improvement, if any with an Injection conversion? More than better fuel consumption I just need to start her and drive off instead of running the engine for at least 3 minutes before I'm able to.

A lot of people do not appreciate drivers having their cars running while parked and will complain. Thanks again for your comments. M
 

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I have a car with Autolite 2100 with electric choke and an other with Holley Sniper 2300. In sub zero temps, I start the one with Autilite 2100, put my seat belt, adjust the heater etc and put it in gear and go without any problems. The one with Sniper, I am still trying to tune it so it does not stall sometimes when I come to a stop when it is below 60 F outside or so and engine temp is below 160..
 

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Discussion Starter #7
I have a car with Autolite 2100 with electric choke and an other with Holley Sniper 2300. In sub zero temps, I start the one with Autilite 2100, put my seat belt, adjust the heater etc and put it in gear and go without any problems. The one with Sniper, I am still trying to tune it so it does not stall sometimes when I come to a stop when it is below 60 F outside or so and engine temp is below 160..
I wish I could just start my car and drive off. I feel embarrassed sometimes with the car running outside my local shops so I tend to do left foot braking while giving it gas with my right foot when manoeuvring in tight spots.

This is how my car behaves unless the engine is hot. I turn ignition on, 2 presses on the accelerator. Crank engine, starts first time every time. Revs go up to 1100, (if I select drive the revs drop to 300-400 and the engine stalls), after about 20 seconds I tap the accelerator, revs drop to around 800, after that is simply means I have to sit in the car for around 3 minutes and then select drive and hopefully go.

AslanEfe, can I ask the origin of your name? Thanks everyone.
 

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Discussion Starter #9
I will be at my mechanics on the 9th of June, will definitely have the timing checked. Thanks for the tip. Both Aslan and Efe are popular Turkish names.
 

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You will need the HyperSpark ignition system to control timing. Your timing problems will not be solved without it.
 

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Thanks for the Cougar70 Tbh, I'm having second thoughts about this. I contacted a company today who quoted me £3500 -£4000 to do the job. That is around $4000 - $4500 and it would be way over my budget. I didn't realise it was such a complex conversion. I have to even change fuel tank and fuel lines as well as a high pressure fuel pump.

My regular mechanic wouldn't even discuss the FI conversion and said I was asking fro trouble and that he thought I had a very solid and sound car. I will be seeing him on the 9th for the electric choke and will discuss all my options then.

Thank you all for your input.
 

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Thanks for the Cougar70 Tbh, I'm having second thoughts about this. I contacted a company today who quoted me £3500 -£4000 to do the job. That is around $4000 - $4500 and it would be way over my budget. I didn't realise it was such a complex conversion. I have to even change fuel tank and fuel lines as well as a high pressure fuel pump.

My regular mechanic wouldn't even discuss the FI conversion and said I was asking fro trouble and that he thought I had a very solid and sound car. I will be seeing him on the 9th for the electric choke and will discuss all my options then.

Thank you all for your input.
I have about $1300 in parts on my Sniper 2300 conversion. Used the original tank and fuel line. Holley 12-305 returnless pump fits into original tank.
 

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Discussion Starter #14
Thank you aslanefe. That's a very reasonable price. I wonder if I should buy the kit from the USA and just look for a mechanic who would be prepared to do the conversion for me? I'm very keen on FI conversion but since importing the car from USA all I've done is spend, spend, and spend:(
 

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The cheapest way to make your car run better is to put the correct carburetor on it and make sure the distributor timing functions correctly. It sounds like your car is in a poor state of tune. Fuel injection will not give you major fuel economy improvement. There are vendors who will sell you a perfectly functioning carburetor and distributor for a fraction of the price of any EFI system.
 
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