EFI Throttle Bodies

[HQ Freek]

I recently purchased a Holley Sniper after much deliberation. I would have gone the Holley terminator stealth if I had my way but they are double the price. With a half decent fuel system to feed it, things add up quickly. Im looking forward to the driveabilty and other advantages of EFI though. It’s been a dream of mine for years. The technology has finally become affordable.

[rallyvan]

Thanks for the feedback Axistr. The engine would be pretty much stock 308. I hadn't seen the Holley Terminator Stealth to date but I think it would suit the look I am going for. Have you had any issues with the system loosing it's "learnt" parameters as a result of battery being disconnected or low battery voltage because the car has sat for extended periods?

[axistr]

Thanks for the feedback Axistr. The engine would be pretty much stock 308. I hadn't seen the Holley Terminator Stealth to date but I think it would suit the look I am going for. Have you had any issues with the system loosing it's "learnt" parameters as a result of battery being disconnected or low battery voltage because the car has sat for extended periods?

Hi ralleyvan, every time I finish using the car the first thing I do is disconnect the battery before putting the cover back on. I had the fuel learn on at 100% for the first 5 hours of initial driving to set the auto tune fuel table then saved it to my base fuel map on my note book just in case I ever lost a tune but never have. I have now turned it back to 60% learn and every so often I hook up the notebook and have a look and see how much learning has been done. So no never had any issues at all with disconnection the battery.


I decided to hook the notebook up a few weeks ago after my son and his girlfriend decided to take the hatch for a cruise. When I looked at the learn table I noticed that it has set fuel blocks right up to 6,700 rpm. So he was busted red handed. I have since reduced the spark cut to 5,850 rpm and before he drives it next time I am going to set it at 3,800 rpm and not tell him. That's going to wipe the smile of his face next time he takes it out. I can set many different tunes to suit fuel grades or drivers and only takes me around 2 minutes to download one.

Leaving the auto tune on around 60% lets the engine correct things slightly for the changes in atmospheric conditions. But basically the auto tune set up the fuel table very close in the first half hour of driving.


DSC_0009_6[2405].JPG
This is how my fuel table looks and the different colours indicate the amount of change. - figures is fuel removed and + numbers fuel added. This table was shortly after saving it to the base map and I took it for a 2 hour easy drive.