Hey Tuners,
Like hundreds before, I ran into the learning curve of what it would take to successfully run a 4 bolt throttle body on a Gen 3.
Nearly all the threads I have read come to the same conclusion: "buy an X-Link".
I looked at the differences between the 8 and 6 pin TB's, and decided to try a hardware hack in order to convert the 6 pin's signals into something the Gen 3 8 pin harness/PCM could use.
The main idea was to cut a few traces inside the throttle position sensor, and add a couple jumpers where needed.
The initial test looks pretty promising, so I thought I'd share the details here.
Bear in mind this is a brute-force, crude, filthy, shade-tree hack job, so this method won't win any beauty contests.
Before:
Before.jpg
After:
After.jpg
The only parts required are a 51k ohm resistor and a 6 pin pigtail.
That makes the hack nearly free.
More details in the video. At the beginning of the vid I mistakenly called the throttle position sensor the "speed sensor", but you should get the idea
Cheers