Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3185811
10/22/23 10:34 PM
10/22/23 10:34 PM
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Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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hardware problem with those 3 injectors? dirty and hanging open some to dump gas?
70 Sport Fury 68 Charger 69 Coronet 72 RR
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3186072
10/23/23 11:48 PM
10/23/23 11:48 PM
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Joined: Nov 2006
Posts: 2,255 IL
furious70
top fuel
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top fuel
Joined: Nov 2006
Posts: 2,255
IL
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I've never run that system, can it tell you duty cycle per injector or just overall?
70 Sport Fury 68 Charger 69 Coronet 72 RR
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3186804
10/27/23 11:42 AM
10/27/23 11:42 AM
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Joined: Jan 2003
Posts: 965 Odessa, Fl
blowndart
super stock
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super stock
Joined: Jan 2003
Posts: 965
Odessa, Fl
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I’m not sure I’ll have to check tonight, also I’m not sure what that means will it till me how hard one injector is working versus another? I’m also learning that it’s seems the Holley sniper has pretty much run XFI off the map The Sniper system isn't in the same category as the XFI. Holley's HP and Dominator systems are closer to the XFI 2.0 systems. The XFI system is a very capable system and should run your engine well. Your problem is in your installation. Are you sure the passenger side bank is firing the plugs at the right time or at all?
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Re: 6.1 hemi fast xfi PIG RICH
[Re: blowndart]
#3187294
10/29/23 10:34 AM
10/29/23 10:34 AM
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Joined: Dec 2018
Posts: 17 Erie pa
76_d100
OP
member
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OP
member
Joined: Dec 2018
Posts: 17
Erie pa
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That’s the thing it is firing the spark plugs cause as soon as it turns over it sounds good and happy then with in a couple seconds it soaks the plugs and starts breaking up. If it is within my installation I’m not sure what it could be because if it were a poor ground I wouldn’t think I would be having issues else where. I’ve gone as far to check my grounds with a meter and haven’t seen any changes. Do you have any other possible ideas of something I may have missed on installation?
Last edited by 76_d100; 10/29/23 10:38 AM.
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3187585
10/30/23 10:29 AM
10/30/23 10:29 AM
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Joined: Jan 2003
Posts: 965 Odessa, Fl
blowndart
super stock
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super stock
Joined: Jan 2003
Posts: 965
Odessa, Fl
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That’s the thing it is firing the spark plugs cause as soon as it turns over it sounds good and happy then with in a couple seconds it soaks the plugs and starts breaking up. If it is within my installation I’m not sure what it could be because if it were a poor ground I wouldn’t think I would be having issues else where. I’ve gone as far to check my grounds with a meter and haven’t seen any changes. Do you have any other possible ideas of something I may have missed on installation? Interesting. Have you run a data log right after start-up to see what the pulsewidth is to the injectors?
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3187656
10/30/23 03:05 PM
10/30/23 03:05 PM
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Joined: Sep 2021
Posts: 20 SWFL
Tie Rod Garage
member
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member
Joined: Sep 2021
Posts: 20
SWFL
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the tunes and the software for 1.0 and 2.0 are a bit different. there were some changes to the firmware that causes the need for different parameters. Which version is your ecu for ? Which version of the software are you using on your laptop ? I just sent a XFI 1.0 box with ITC in to be upgraded to 2.0..
1941 Dodge WC, 493 cid twin turbo FAST XFI 2002 Dakota R/T RC
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Re: 6.1 hemi fast xfi PIG RICH
[Re: Tie Rod Garage]
#3188206
11/02/23 08:41 AM
11/02/23 08:41 AM
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Joined: Dec 2018
Posts: 17 Erie pa
76_d100
OP
member
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OP
member
Joined: Dec 2018
Posts: 17
Erie pa
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the tunes and the software for 1.0 and 2.0 are a bit different. there were some changes to the firmware that causes the need for different parameters. Which version is your ecu for ? Which version of the software are you using on your laptop ? I just sent a XFI 1.0 box with ITC in to be upgraded to 2.0.. So I started with 1.0 on the box and 1.0 on the computer using the dell laptop I got when I bought the swap truck and as far as I know both were the earliest versions of the software. I called fast and they sent me the update file for each and I did the update my self bringing the box to xfi 2.05 and my newer computer to what ever they said was the latest program. From there I was still unaware of the parameter changes you had mentioned and was still having issues. Next I found the video on how to update your 1.0 tunes to work with 2.0 like zeroing the individual cylinder corrections table and a couple others power adder configuration is turned off aswell. The thing I thought was odd is in the video his individual cylinder corrections table read 0-4500 rpm in either 500 or 1000 rpm increments but mine before I zeroed the table and changed the value read only 12,500 rpm meaning every input on the horizontal axis read 12,500 rpm while the vertical axis reads cylinders 1-8 and I believe listed in firing order
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 76_d100]
#3188506
11/03/23 02:59 PM
11/03/23 02:59 PM
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Joined: Nov 2006
Posts: 4,742 Star Idaho
67vertman
master
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master
Joined: Nov 2006
Posts: 4,742
Star Idaho
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Well I believe I’ve found my issue after speaking with Richard Nedbal at fastmanefi, who was incredibly helpful, I do believe that the injector drivers within my xfi unit have gone bad. Upon some further digging I have also discovered that fast no longer has any sort of support for there products. In 2016 or 17 after the completion of xfi 2.05 they wanted to move the software engineers to Kentucky from Michigan. The engineers did not like this and weather they quit or were fired I’m not sure but as far as fast goes for support there’s 2 highschool kids that answer the phone after HOURS on hold and they don’t know much. But as far as I know there is nothing for support at fast anymore maybe someone else has more information and obviously take what I’m saying with a grain of salt but over the last couple months through all my research it seems to make sense. If you do any digging on your own you won’t find any forums speaking about fast efi any time after 2016 or 2017. Today i am going to try and see who I can get ahold of at fast or anywhere in their company chain to see what they will do for me and I will post any updates I find. Thank you to everyone who responded to this thread and Richard nedbal who is certainly the subject matter expert on all things efi. Also maybe anyone on here who attempted sema or any big event like that I’d be curious to see what kind of display fast has if anything at all! I told you Rich was the man. He helped me a lot when I was doing my EFI conversion. He spent quite a few hours helping me sort things out.
My Monster are real!
Living within your means makes life pretty easy.
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Re: 6.1 hemi fast xfi PIG RICH
[Re: 67vertman]
#3189767
11/09/23 08:49 AM
11/09/23 08:49 AM
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Joined: Sep 2021
Posts: 20 SWFL
Tie Rod Garage
member
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member
Joined: Sep 2021
Posts: 20
SWFL
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About 2 1/2 weeks ago I sent in a black ecu with ITC to be updated from 1.0 to 2.0. It's due to be delivered to me this afternoon, so there absolutely is support , I just do not know to what extent repairs can or will be made.. I have had xfi since just after 2.0 was released. I found early on that almost no one would share tune files. You could find some info, but not much. You either had to take courses, pay a pro to tune or figure it out on your own. I figured it out on my own. In doing research 10-15 years ago, I found the situation to be similar with most of the other commercially available controllers.
1941 Dodge WC, 493 cid twin turbo FAST XFI 2002 Dakota R/T RC
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Re: 6.1 hemi fast xfi PIG RICH
[Re: Tie Rod Garage]
#3189769
11/09/23 08:59 AM
11/09/23 08:59 AM
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Joined: Sep 2021
Posts: 20 SWFL
Tie Rod Garage
member
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member
Joined: Sep 2021
Posts: 20
SWFL
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A few years back when I updated the firmware in my original 2.0 box, I found it easiest to start over from scratch with an all new tune and not reuse or attempt to update any old tune files.
1941 Dodge WC, 493 cid twin turbo FAST XFI 2002 Dakota R/T RC
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