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Thumbnail Filmstrip of 1995-2003 7.3L Powerstroke Arachnid 8 Position Chip Quadzilla QZ8PS73LDAC3 Images
The Quadzilla Arachnid is an 8-position chip for the 1994.5–2003 Ford 7.3 Powerstroke. It plugs into the PCM and uses a dash switch, so you can change power levels while you drive.
It replaces the old 4-bank Quadzilla chip. The eight positions cover stock, high idle, tow, daily, and the higher race and Beast Mode files. Power depends on the truck. Later trucks reach about 120 to 140 hp on stock injectors. These files are written for stock injectors. Quadzilla does not offer tunes for upgraded injectors on this chip.
It is a PCM chip, not an OBD flash tuner. Each chip is burned for a specific year and transmission. Tell us the year and whether the truck is an automatic or a manual so the right file goes on it. It does not fit a 7.3 IDI.
Fitment
- 1994.5–2003 Ford 7.3L Powerstroke
- F-250, F-350, and Excursion
- Automatic and manual, chip matched to the truck
- 8-position on-the-fly switch
- Stock-injector calibrations
- Does not fit a 7.3 IDI
- Not for sale in California
Clean the PCM contacts before you seat it. A dirty port is the usual reason a freshly installed chip will not start.
The Quadzilla Arachnid is an 8-position chip for the 1994.5–2003 Ford 7.3 Powerstroke. It plugs into the PCM and uses a dash switch, so you can change power levels while you drive.
It replaces the old 4-bank Quadzilla chip. The eight positions cover stock, high idle, tow, daily, and the higher race and Beast Mode files. Power depends on the truck. Later trucks reach about 120 to 140 hp on stock injectors. These files are written for stock injectors. Quadzilla does not offer tunes for upgraded injectors on this chip.
It is a PCM chip, not an OBD flash tuner. Each chip is burned for a specific year and transmission. Tell us the year and whether the truck is an automatic or a manual so the right file goes on it. It does not fit a 7.3 IDI.
Fitment
- 1994.5–2003 Ford 7.3L Powerstroke
- F-250, F-350, and Excursion
- Automatic and manual, chip matched to the truck
- 8-position on-the-fly switch
- Stock-injector calibrations
- Does not fit a 7.3 IDI
- Not for sale in California
Clean the PCM contacts before you seat it. A dirty port is the usual reason a freshly installed chip will not start.
Q
Thayne Jeffries • 04/10/2025, 2:26:46 AM
I just bought this tuner and tried installing it tonight took me 3 times of scuffing it with the scotch pad and cleaning it with the wipe to finally make some sort of connection or I only assume is connection due to the truck showing me no wait to start light and then a crank no start but when i remove the chip the wait to start light appears and the truck starts as it usually would does anyone know what might be the cause?
A
04/23/2025, 7:11:40 PM
Call our sales team to diagnos this issue.
Q
Michael Colon • 07/03/2026, 7:23:57 PM
I have a 1994.5 7.3 PSD with a Quadzilla 8 position chip installed. Can I run stage 1 injectors with this chip?
A
07/07/2026, 1:04:54 PM
We do not offer quadzilla tunes for upgraded injectors. Not advised as the chip will fuel for stock injectors and over fuel.
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5/5 Stars out of 4 Reviews
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Levi Todd | February 24th, 2025
10/10 service fast shipping easy to navigate the website. Very happy with my purchase will definitely be using fullforcediesel.com in the future, as for the product I’m very happy with it, easy to install very high quality, I like that it came with a template to drill holes and a piece of scotch brite pad for the connector as well as the zip ties to hang the wire up I’m beyond satisfied
James Green (Trenton) | July 22nd, 2024
So I bought this because my edge programmer flashed my computer and I read where if u put a chip on it, I'll work. Reman module is right a 1000 bucks. I said why not gonna want it either way because this truck needs to be turned up some... I got this very fast and installed it. Worked great and woke up the truck way more than expected. Love they settings although think they could cut a few down by adjusting it some but that's just a opinion.. did some more reading and edge say the revolver offer 150hp vs this one offering 120 so I bought one and what a total disappointment this was. If your looking for more power and towing. High idling in the winter or working off it I strongly recommend this product. I own a diesel repair shop and will be recommending this product to anyone that ask. Also full force was great to inform me about my order as I needed to get my truck rolling as soon as possible
Calvin Blake Mitchell (AVONDALE) | December 16th, 2022
10/10 Recommend, It woke my truck up! I got a 6 inch lift on 35's. My truck moves now!
Jason Jones (Tennessee) | April 29th, 2021
Great chip gave my truck exactly what it was missing in power throttle response is much better now than it has ever been would recommend this chip for anyone looking to get better performance out of there truck
Proposition 65 Warning Information -
P65Warnings.ca.gov
Fits: 7.3 Powerstroke 1994-2003
California Restricted
Fits: 7.3 Powerstroke 1994-2003
California Restricted
Fits: 7.3 Powerstroke 1994-2003
Fits: 7.3 Powerstroke 1994-2003
California Restricted
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
Fits: 7.3 Powerstroke 1994-1997 & 1999.5-2003
California Restricted
Fits: 7.3 Powerstroke 1994-2003