March 16, 2025, 06:40:17 PM

Author Topic: Kingers Garage  (Read 130024 times)

Offline MPbdy

Re: Kingers Garage
« Reply #615 on: February 10, 2025, 12:33:07 PM »
Would I be able to re-pin a Holley harness? Is it saving some money or just time? Isn’t there a ton of wiring you need to add still like for the new sensors and I/O?

What are you aiming to do?  Switch from Holley to Maxx? 

Maybe, possibly someday lol.

I'm kicking around the idea of traction control.  My car is ridiculous with this much power (super fun, but insane).  With cold tires it will spin 3rd gear up through 100 mph.  I mean spinning like throwing the car sideways at 90mph spinning.  But then other times it is hooked up starting in 2nd.  I need to give it some time and let it warm up a little bit outside and see how the car is to drive, and also how it does on a track before making a decision.

Holley uses add-on Davis traction control.  They say it works for street and road course duty, but they only advertise for drag racing and circle track use.  I also struggle to find feedback from others using it outside of drag racing.  For drag use, people are evangelical about it, but that is an extremely narrow use case in a controlled environment. 

Their strategy is to use driveshaft speed only and look at driveshaft rate of change.  If it zings up too fast it'll retard timing.  Outside of drag racing, I don't know if that strategy is as effective as the wheel speed comparison style.

They have a basic unit for $1000 and a self learn enabled unit for $2000.  Maybe I can find one used out there.  Lotta f'n money. So then I started wondering like your situation, could I somewhat easily switch to a MaxxECU and I just can't see how I could repin and swap out ECU's and have it be plug and play without having to still tear up or add a bunch of stuff.

Offline shainiac

Re: Kingers Garage
« Reply #616 on: February 10, 2025, 12:52:03 PM »
Have you found a good source for a crimp tool?  The one I found was $150 for the tool and $500 for the die  :o

Nope lol. I used a Molex crimper for their standard style connector. It did work, but inserting pins isn't as smooth as I hoped.
FWIW, I was depinning unused wires on a Maxx Race harness I'm making for a friend's MK4 Supra. After unlocking the pins with the Maxx tool, it was still a pain to fully remove the pins. Several snagged and bent up the pin locks. The CMC connectors are mega compact and pretty feature-packed, but they suck to pin and depin. So I'm not sure how much of my struggles are from not having the right crimper vs the connector being a pain.

One thing that helped when I did my harness, I have a tiny tube of Krytox PTFE lube with a little nozzle tip that fits inside the pin socket. I'd squirt a TINY bit of lube before I inserted the pin. Part of the struggle is squishing the pin through the silicone seal opening, which is smaller. Going in dry makes things worse, if you can image that lol. I've also read of people using high% iso alcohol for lube so it evaporates quickly after. I don't see PTFE causing issues with the terminal, though.
'88 TII -  Rods/Pistons LS3, Twin G30-770s, MaxxECU Pro/PDM
BMW DCT Swap, Ronin 8.8" IRS

Offline kinger

Re: Kingers Garage
« Reply #617 on: February 11, 2025, 09:51:57 AM »
Would I be able to re-pin a Holley harness? Is it saving some money or just time? Isn’t there a ton of wiring you need to add still like for the new sensors and I/O?

What are you aiming to do?  Switch from Holley to Maxx? 

Maybe, possibly someday lol.

I'm kicking around the idea of traction control.  My car is ridiculous with this much power (super fun, but insane).  With cold tires it will spin 3rd gear up through 100 mph.  I mean spinning like throwing the car sideways at 90mph spinning.  But then other times it is hooked up starting in 2nd.  I need to give it some time and let it warm up a little bit outside and see how the car is to drive, and also how it does on a track before making a decision.

Holley uses add-on Davis traction control.  They say it works for street and road course duty, but they only advertise for drag racing and circle track use.  I also struggle to find feedback from others using it outside of drag racing.  For drag use, people are evangelical about it, but that is an extremely narrow use case in a controlled environment. 

Their strategy is to use driveshaft speed only and look at driveshaft rate of change.  If it zings up too fast it'll retard timing.  Outside of drag racing, I don't know if that strategy is as effective as the wheel speed comparison style.

They have a basic unit for $1000 and a self learn enabled unit for $2000.  Maybe I can find one used out there.  Lotta f'n money. So then I started wondering like your situation, could I somewhat easily switch to a MaxxECU and I just can't see how I could repin and swap out ECU's and have it be plug and play without having to still tear up or add a bunch of stuff.

Oh yeah that would be sweet, I am planning to do that with my GM PCM so I bought a full unterminated harness then de-pinning the 50 or so pins I need to make the LS work.  Your holley would probably be easier.  GM has separate GNDs and 5V power all over that PCM and they all need to tie to 1 pin on the Maxx.  I think the main hold up is the crimp tool.  Its a super expensive part and if you use another tool the pins don't slide in and work very well and its a PITA.  So I may just have to buy the damn thing then I could borrow it out to all of you :)

I will have more power then you let me see how my traction control will actually work.  If its not great then no need for you to switch.  I will be disappointed if its not great though lol  I am banking on that making the car easier to drive because I am spoiled with the Race Logic box I have now.  Mash and go its nice and straight.  I am not a fan of the Davis box for the reasons you listed as well. 

93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights

Offline Exidous

Re: Kingers Garage
« Reply #618 on: February 12, 2025, 05:51:53 AM »
You don't NEED the crimper especially for the bigger power pins. For the smaller pins it makes a big difference. I managed to get a set off eBay lightly used. The pair was $300!

MaxxECU TC isn't a fancy torque model like EMtron but you can do throttle by gear for best case scenario and use the fuel/ignition for anything outside best case traction. Their TC works VERY well once tuned. I had mine quite dialed in and it was nearly perfectly smooth. Shainiac is still working on his. :-p.

Honestly, despite Maxx using an VE torque model rather than the fancy air mass in EMTron you can still get it to do whatever you want with how flexible it is. Getting the car running is easy. Then just add stuff as you learn more.
94 BB Sleeved gen IV LS7, MS3ProU with TC, RONIN 8.8 and LT's with custom 3.5"single to VAREX muffler.

Offline kinger

Re: Kingers Garage
« Reply #619 on: February 18, 2025, 03:00:25 PM »
You don't NEED the crimper especially for the bigger power pins. For the smaller pins it makes a big difference. I managed to get a set off eBay lightly used. The pair was $300!


There are so many molex crimpers on eBay, how do I tell which one is the correct one? 
93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights

Offline Exidous

Re: Kingers Garage
« Reply #620 on: February 18, 2025, 03:39:33 PM »
It's the CMC connector.

63811-9200

63811-8900
94 BB Sleeved gen IV LS7, MS3ProU with TC, RONIN 8.8 and LT's with custom 3.5"single to VAREX muffler.

Offline kinger

Re: Kingers Garage
« Reply #621 on: February 20, 2025, 10:02:47 AM »
It's the CMC connector.

63811-9200

63811-8900

Thank ya.  Dear lord that is spendy.  Hence why I ordered the unterminated harness I may just barrel crimp everything and be done lol 
93 Touring, 6.3L, T56 Magnum, Mamo RPS BC2 clutch, FAST 90, NW 90TB TB, 8.8, samberg everything, AC, PS, TC, Cruise, LED Tails, HID head lights