Holley Terminator X Max
Thread Starter
Burning Brakes
Joined: Nov 2010
Posts: 1,112
Likes: 62
From: Chicago IL
Holley Terminator X Max
So I decided to go with the Holley Terminator X Max (550-926) and I was curious if anyone that has experience with installing this kit could throw me some tips before I start the installation ? I’ve already figured out I need an alternator harness, 2 pressure sensors and a couple adapters & fittings. Also, with our rear mounted transmission, I already foresee the need for a longer transmission wiring harness. Any help or suggestions would be great. Thx.
Thread Starter
Burning Brakes
Joined: Nov 2010
Posts: 1,112
Likes: 62
From: Chicago IL
I got the car running last week. I just received the remote base tune from my tuner and the car runs excellent but hasn’t left the garage. I’m gonna drive the car in a couple days and get some learn data to get the tune a little better. The biggest obstacle was what to do with the factory computer. I ended up depinning most of it and really only utilizing the starter circuit so I can start the car with the factory ignition system.
I ended up extending the transmission wiring harness 5 feet myself. I’ve read that you can order the transmission harness longer from Holley but the wait time will be tremendous judging by the wait time for an unmodified system
I ended up extending the transmission wiring harness 5 feet myself. I’ve read that you can order the transmission harness longer from Holley but the wait time will be tremendous judging by the wait time for an unmodified system
Last edited by junk c5; Jun 12, 2021 at 10:04 PM.
Thread Starter
Burning Brakes
Joined: Nov 2010
Posts: 1,112
Likes: 62
From: Chicago IL
Melting Slicks
Joined: Jul 2008
Posts: 3,002
Likes: 216
From: Houston Texas
2018 Corvette of Year Finalist
2017 C5 of Year Finalist
I haven't been visiting this forum as often, but it's good to see your thread regarding the Holley. I'm going down the same path. Would you be interested in discussing your install?
Melting Slicks
Joined: Jun 2005
Posts: 3,088
Likes: 61
From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
I know this thread is alittle old,But I just finished up the Holley terminator x max in my C5,All gauges working,Got the car to idle and rev a bit,Let the tuning begin LOL
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Racer
Joined: Mar 2012
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From: DFW Texas
Melting Slicks
Joined: Jun 2005
Posts: 3,088
Likes: 61
From: NY- 2013 Corvette Challenge Champion-2013 Index Combo Champion 2015 CC/MM Champion
St. Jude Donor '07
Melting Slicks
Joined: Mar 2006
Posts: 2,754
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From: South Florida FL
Cruising
Joined: Oct 2020
Posts: 14
Likes: 2
From: Waxhaw, NC
I am starting to map out my terminator install.
Where did you guys run the green fuel pump wire to?
Did you bypass the fuel pump relays and run it directly to the pigtail on the fuel pump or did you run it a different way?
Where did you guys run the green fuel pump wire to?
Did you bypass the fuel pump relays and run it directly to the pigtail on the fuel pump or did you run it a different way?
Racer
Joined: Dec 2004
Posts: 331
Likes: 1
From: Sellersburg IN
FourG63 97GST Is that your car? Did you do the install? I understand the concept but would like to see an actual wiring diagram to see what is needed.
Last edited by TURBO VET; Jun 8, 2022 at 10:25 AM.
Melting Slicks
Joined: Mar 2006
Posts: 2,754
Likes: 380
From: South Florida FL
FourG63 97GST Is that your car? Did you do the install? I understand the concept but would like to see an actual wiring diagram to see what is needed.
I say if you understand the concept, and know what computer needs what signals. go for it. I personally don't have the time or incentive and dig through the notes and put a diagram together. it was few years ago.
Melting Slicks
Joined: Mar 2006
Posts: 2,754
Likes: 380
From: South Florida FL