With the self learning EFI's (holley or fast) or any for that matter.......is there anyway of using nitrous with these reliably? Without having to use a laptop and reflash a nitrous tune?

This is not for me or it wouldn't be a problem, but rather for someone with realy no tuning abilities.
It is for a 505ci pontiac, so I am looking for something minus an intake and that the owner does not have to do any tuning, etc. after I set it up.
Right now he has a digital 6 with nitrous retard, so with carb setup he can just turn on the bottle and spray it.
He is wanting to go EFI but with the nitrous I haven't figured out a good way to go for him.

Change desired WOT a/f on the handheld display when using nitrous??

Will the EFI pull fuel fast enuf to lean it out if you just turned on the nitrous and left the tune alone?

Don't bother, just leave a carb on it?

Remove the nitrous and enjoy the EFI?

:beers: Brian

run the nitrous manually just like your doing now. there's actually no need to integrate it into the EFI, you could, but it's not necessary. It's not integrated into the carb, right?

run the nitrous manually just like your doing now. there's actually no need to integrate it into the EFI, you could, but it's not necessary. It's not integrated into the carb, right?

Hey Tom, not trying to integrate. Concerned with when the nitrous/fuel enrichment is activated the EFI will see the rich condition and pull fuel.
Say WOT desired is at 12.5:1.
On nitrous the a/f now goes to say 11:1, the EFI will see this and begin trying to correct the a/f back to 12.5:1.

Maybe I am overanalyzing it? Maybe it won't react that fast?

Brian it's possible that their new EFI has a different target a/f map for nitrous, but I would comment that people are targeting 12.5:1 a/f on the spray these days with sufficient timing retard, so maybe it's not even an issue.

Also, EFI is your all in one nitrous depot. Send it 12v with an arming switch like your current configuration and let the ECU pull timing, trigger your system based on RPM and TPS, and conventiently let it correct your air-fuel with the closed loop WOT strategy if necessary. I had a little issue the other day and the closed loop saved my rear by adding 17% fuel (to get back to my 12.5 a/f btw) and it added very quickly.

Anyway, I'd say dive head first into nitrous + EFI.

I know the Holley can handle it. Doug F. has been spraying his 491" Nova forever with no issues. In the software you can set up several stages of n20 to come in as you want them to and then adjust timing etc to match.

You ought to download it off their website and check out all the screens as well as the tuning manuals. It lays it all out for you pretty well.


JIM

The Avenger systems weren't really designed for integrated power adders....the goal was to simplify the tuning process via the handheld controller. It "could work"....the caveat is the system "learns" from the correction so...the nitrous activation would change what the closed loop/learn would do on/off if just trying stay in "Avenger mode". Not that the target a/f would change much from default (12.5:1) but integrating in the systems capabilitues make for a increased contol ala "HP mode" using the software.

As Jim pointed out...utilizing the software offers alot more fuel, timing and activation control but, requires a using a laptop to configure the nitrous cfg part of the system. I could probably put a very basic nitrous cfg on your Avenger map if your not comfortable with the software.

You can do all kinds of things with EFI and dry nitrous. I work with one team running about 800 HP worth of dry nitrous. They run closed loop at times running that much nitrous. There are many advantages running dry nitrous through EFI...if you know what you are doing.. The new Holley EFI is by far the easist to use with nitrous, although...you need to know what you are doing.