FAST old gray box software

mike britt · 03-02-2022, 10:52 PM

I don't know if the software I have is incomplete or what but the only tuning I seem to be able to do is acceleration enrichment, I can't find a way to change the pulsewidth or A/F ratio. Anybody have any tunes or software for this thing? It's on a 350 TPI motor.

countrypuppy4865 · 03-03-2022, 09:56 AM

Go to this link: https://www.fuelairspark.com/software-downloads

Then look for "C-Com WP - For Grey Box FAST ECU"

mike britt · 03-03-2022, 04:22 PM

When I click that link all I get is a bunch of garbage about gaming and advertisements.

Rsmith38 · 03-03-2022, 08:28 PM

Link works for me.

Then scroll down to the early software download.

mike britt · 03-04-2022, 11:48 PM

So I figured out how to use the software I have so I don't need anything but time to play with it. The problem I was having was running too rich at idle and blacking the plugs. I got that fixed.

mike britt · 03-15-2022, 10:21 PM

I just about have this thing straightened out but I can't get the O2 sensor to work. Any body that knows anything about EFI knows without an O2 your tuning blind. I guess I'm going to have to call FAST. That'll kill about an hour or two.

mike britt · 03-17-2022, 10:27 PM

Any ideas? I still can't get the O2 to read. Wondering if I get a separate O2 can I overlay it on my graph to try to get the fuel right.

4543 · 03-18-2022, 08:09 AM

I have an almost new FAST XFI used on my TPI motor for about 20 passes for sale. Includes wiring, ECU, O2 Sensor, software, works perfect. PM me if interested. Mike McMahan 2543 H/SA

mike britt · 03-18-2022, 07:25 PM

So FAST is telling me this thing will never run right without an O2 reading. I thought if you ran it in open loop, which I thought everybody did, it wouldn't matter if it gets an O2 signal or not.

Glenn Briglio · 03-18-2022, 09:07 PM

Quote:

Originally Posted by mike britt

So FAST is telling me this thing will never run right without an O2 reading. I thought if you ran it in open loop, which I thought everybody did, it wouldn't matter if it gets an O2 signal or not.

I run a holley dominator ecu in closed loop. It runs consistent and pretty fast.

03-02-2022, 10:52 PM	#1
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	FAST old gray box software I don't know if the software I have is incomplete or what but the only tuning I seem to be able to do is acceleration enrichment, I can't find a way to change the pulsewidth or A/F ratio. Anybody have any tunes or software for this thing? It's on a 350 TPI motor.

03-03-2022, 09:56 AM	#2
countrypuppy4865 Senior Member Join Date: Nov 2003 Location: Donaldsonville, LA Posts: 977 Likes: 17 Liked 227 Times in 69 Posts	Re: FAST old gray box software Go to this link: https://www.fuelairspark.com/software-downloads Then look for "C-Com WP - For Grey Box FAST ECU" __________________ Jimmy "Cooter" Hidalgo, Jr. 4865 E/SA '04 GTO 4865 SS/GA '99 Firebird

03-03-2022, 04:22 PM	#3
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	Re: FAST old gray box software When I click that link all I get is a bunch of garbage about gaming and advertisements.

03-03-2022, 08:28 PM	#4
Rsmith38 Member Join Date: Mar 2011 Posts: 186 Likes: 0 Liked 28 Times in 15 Posts	Re: FAST old gray box software Link works for me. Then scroll down to the early software download.

03-04-2022, 11:48 PM	#5
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	Re: FAST old gray box software So I figured out how to use the software I have so I don't need anything but time to play with it. The problem I was having was running too rich at idle and blacking the plugs. I got that fixed.

03-15-2022, 10:21 PM	#6
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	Re: FAST old gray box software I just about have this thing straightened out but I can't get the O2 sensor to work. Any body that knows anything about EFI knows without an O2 your tuning blind. I guess I'm going to have to call FAST. That'll kill about an hour or two.

03-17-2022, 10:27 PM	#7
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	Re: FAST old gray box software Any ideas? I still can't get the O2 to read. Wondering if I get a separate O2 can I overlay it on my graph to try to get the fuel right.

03-18-2022, 08:09 AM	#8
4543 Senior Member Join Date: Apr 2005 Location: Texas Posts: 635 Likes: 56 Liked 621 Times in 136 Posts	Re: FAST old gray box software I have an almost new FAST XFI used on my TPI motor for about 20 passes for sale. Includes wiring, ECU, O2 Sensor, software, works perfect. PM me if interested. Mike McMahan 2543 H/SA

03-18-2022, 07:25 PM	#9
mike britt Member Join Date: Mar 2013 Location: Italy, Texas Posts: 169 Likes: 346 Liked 61 Times in 29 Posts	Re: FAST old gray box software So FAST is telling me this thing will never run right without an O2 reading. I thought if you ran it in open loop, which I thought everybody did, it wouldn't matter if it gets an O2 signal or not.