Welcome to Twisted Builds Wideband Controllers and Wideband Gauges (for my wideband controllers).
Here is the release video posted to YouTube:
This line of products came to be mainly because of the lack of cheap, durable, reliable and dependable wideband controllers on the market in the USA that are specifically made for the LSU 4.9 style sensor (Bosch or NTK) that DOES NOT need any calibration to get up and going. Not to mention there are no cheap DIY kits doing this either. Also it came to be because now that I am working on bringing my GM LS and 4200 based ECU’s to market, I needed a cost effective wideband controller solution for these ecu’s and after getting fed up with the responses I was getting from companies I was contacting I decided to just make my own for the masses! So these wideband controllers are based on 14point7.com’s open source SLC Free wideband controller and the firmware is used under the GPL v3 license, and you can download the firmware here:
I went ahead and redesigned the schematics to fit my needs and got PCB boards designed, made, and assembled for testing and now for sale. They are equipped with a 14 pin AMP SEAL connector from TE Connectivity’s ampseal connector line for a nice positive latching automotive style connector to the controller. Then I designed and printed a 3D printed enclosure for the boxes and labeled them with my logo. Bench tests and in car tests by me and beta testers have shown they work just as intended so far. I’ve also contacted a company who makes professional wiring harnesses for the automotive aftermarket and have they are making PNP style harnesses for these controllers as well. Just look at it!
They are all terminated with 7 feet of loomed wire between the amp seal connector and the LSU 4.9 sensor connector. Then they have a foot of wire for the power, ground, simulated narrow band outputs and wideband outputs as well. Controllers come with 2 simulated narrow band (0-1v, “switched” at 1.0 lamba at 0.5v) and two 0-5v 10-20AFR wideband sensor outputs. So this would be perfect for the factory PCM folks, or aftermarket ECU folks as well. Example with say a factory LS PCM using this wideband controller. You can hook both narrow band outputs to the factory narrow band sensor inputs on the LS ECU, to retain cruising closed loop functionality, with only using ONE wideband o2 sensor! Then on the actual wideband sensor side, you can have one of the 0-5v sensor outputs going to either your tuning cable if equipped with a 0-5v ext analog sensor input, or the A/C Pressure switch input, etc so it can be datalogged with your tuning cable/software of choice and also have a second 0-5v wire going to say a gauge, external datalogger, or whatever your heart desires.
Now the Twisted Builds LLC wideband gauge is a gauge I designed and tested that can be used with this controller is a 3D printed, 52mm housing gauge that you can put anywhere you can fit a traditional oil pressure gauge.
This gauge comes with a black Molex style 3 pin connector, 10 feet of 18 gauge wire in Red, Black, Pink, along with protective loom, crimps and heat shrink for both the crimps and loom ends. The advantages of this gauge is the OLED display is visible in all lighting conditions and is very easy to see while operating a vehicle.
Pricing will be as follows (DOES NOT INCLUDE SHIPPING COSTS):
$70.00 for DIY kit. DIY kit will be unassembled except for the IC chip and program header which must be installed for programming. Kit will include all components needed for the controller itself but WILL NOT include a LSU 4.9 style wideband connector. (Cheapest your going to find pretty much anywhere for controller only that works with the updated sensor if your good assembling it yourself and if really on a budget you could source a wideband sensor connector at a junkyard).
LSU 4.9 harness connector with pins will be $15 (can be added to the DIY kit if customer wants a new one).
$85.00 for Assembled wideband controller with BOTH ampseal and wideband sensor connectors and pins. Would require building your own harness.
$135 for Assembled wideband controller WITH professionally made 7’ assembled harness.
Additional harnesses can be bought for $60 each (just in case of misrouting and they get cut on say a firewall, or get damaged from external sources, etc).
The whole kit, which would include the assembled and tested wideband controller, wideband gauge and both harnesses (for controller and gauge) is priced at $185.00 **NOTE** This DOES NOT come with a sensor, you would still have to provide a oxygen sensor.
The individual Wideband Gauge and harness can be bought for $60.00
No wideband sensor pricing at this time because I’m still working with potential suppliers to get that setup. However the controller will work with any LSU 4.9 wideband oxygen sensor. The ones I personally use are the Bosch 17321 sensors, however the Bosch 17025’s will work just fine as well. Here are links for now to purchase these required sensors:
Bosch 17321 (More expensive but better in my opinion)
Bosch 17025 (Cheaper Sensor but what most other wideband controllers use)
If you want to catch up on the madness I have a Youtube playlist of how all of this has gone down to date! You can see it here:
If you have any questions feel free to email me at dale@twistedbuilds.com and I’ll get back to you as soon as I can.
Thanks for reading and I hope your as excited about these as I am! They for sure are going to be a game changer in the budget friendly wideband sensor controller market for sure.