I have a Sniper on my '89 Stepside. It runs great, but it's not without some headaches. If you go the Sniper route, know that the system cannot tolerate vacuum leaks, exhaust leaks, nor poor wiring. You
must be rock solid on those things. I also bought the Hyperspark ignition so the computer can control the timing, but I'm not sure it's worth it. On the plus side, now the only thing my ECU controls is torque converter clutch lockup.
Pros:
It's truly easy to get running provided you have it installed correctly. Mine busted off immediately and after a year of driving drives very well.
They use off-the-shelf sensors for it. The TPS is the same one on your TBI setup. The wide-band O2 sensor is from a Dodge Ram 2500.
When it acts up, diagnosis is easy because the hand-held gives you data stream.
Cons:
The factory TPS they ship it with is cheap garbage.
You're gonna get nickeled and dimed in the traditional Holley way.
You're probably going to have to readjust the throttle plates. My throttle was sticking open, and it's apparently a common problem on Snipers.
What you'll need:
Get the metric to AN adapaters that plug right into your stock fuel lines and then you can plug your fuel lines right onto the Sniper with male AN to male AN adapters.
You
absolutely need the throttle arm extension or your throttle attack is excessive and you can bend your throttle shaft.
https://www.summitracing.com/parts/sne-20-16
Get the Summit throttle bracket. It says it doesn't fit the Sniper, but it works.
https://www.summitracing.com/parts/sum-g1514
Getting the handheld's cable through the firewall is a pain in the butt. I used an antenna plug to pass it through the firewall, and then put a piece of 5/16" fuel hose over the cable to seal it into the antenna plug.
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