I'd have to disagree with that.I spoke to Wes once about throttle stop settings and the factory tool. He said to follow his instructions and not use the factory tool. He said the factory tool is surprisingly not accurate. I wasn't expecting to hear that.
Just repeating what he said. In theory anyway, I would more agree than disagree with Wes, with a lot of it being predicated on how the system has been fiddled with prior. I didn't spend time going into detail (wish I did). Also some of the factory set-up instructions, let's just say he didn't agree with either.I'd have to disagree with that.
The tool just sets the stops. Then you adjust the rod from the butterflies to the crank. Not really any way for it to be inaccurate.
I can't say that I agree with everything in post 8. The tool makes it faster and easier to get the set-up ready for the next steps. Like Jim said, use the tool and set the closed and full open screws correctly. It takes less than 5 minutes start to finish. Then set the short rod so that the throttles close at the same moment the relay crank hits the stop. Then, go forward to getting the screw under the TA set, the long rod, the fuel shut off solenoid, the cold start solenoid, etc. adjusted. I will snap some images and post them. It's a 3 dimensional tool. I would think that a proper 3D scan would be needed. Someone send me PM to remind me, if I forget.
That is my takeaway as well. Things will be close or close enough for 99% of us with the factory tool (assuming other variable in the system are close enough to factory spec as well). There could be transitions that aren't perfect or maybe tip-in response is not quite agreeable, but not enough of an issue to spend time on granular adjustments. Also, with so much wear and tear on most cars, factory settings can never be attained anyway so why waste the time chasing these things.I don't get it. How accurate does it have to be to set the idle and WOT stop. Thats it. Thats all the tool does. Once its set. That's it. Never to be messed with again. Unless someone else screws with it. If its a thousandth off. Is it going to make a difference? Its everything else after the throttle stops that is adjustable where error can creep in. Now if your missing the special nut for the tool. The yeah. If might be off when you set the stops.
You also have to remember a lot of what Wes has done. Is tuning for racing. At that point yes. It might not be accurate enough to get you that extra 100th of a second to win.
I agree with Wes, we have spoken about this. I've never used the factory tool. All done by eye and close inspection. Say what you want to say, but the tool is not the end all - be all. I've had to undo many botched Spica "tuning" attempts, even some from after using "thee tool". First setting for this adjustment always (an most important) starts with the butterflies just closed, all other adjustments are taken from this point.I spoke to Wes once about throttle stop settings and the factory tool. He said to follow his instructions and not use the factory tool. He said the factory tool is surprisingly not accurate. I wasn't expecting to hear that.