To all you TB bump stop modders
To all you TB bump stop modders Just did the bump stop mod. Went all the way to 4.70v. You guys say that 4.71v is perfect 90* right? That does not seem so if you look more closely. I put mine to 4.71v and then looked at it. It was actually a bit past 90*. So what I did was took an angle square and lined it up with the back of the TB and the blade and got my perfect 90*.
It seems that a perfect 90* pitch for the stock TB is 4.56 volts. (So it seems)
Let me know what you guys think.
It seems that a perfect 90* pitch for the stock TB is 4.56 volts. (So it seems)
Let me know what you guys think.
Electrical reading is only loosely related to angle, the
manufacturing tolerances stack up. Grind it for the
mechanical and then do what you gotta, if the TPS
voltage is out of range.
manufacturing tolerances stack up. Grind it for the
mechanical and then do what you gotta, if the TPS
voltage is out of range.
It was past 90* for the 4.71v reding. So I bumped it down to 4.56v to get my perfect 90*
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I bet every car is different.
Having done over a thousand bump-stop mods with my ported throttle bodies, I don't think the voltage or exactly 90 degrees is critical. I just wing it everytime and do them all about the same. What I will say though is that there is variance with the throttle shaft where it hits the bump-stop. So some are bent more than others, even some visibly.
I would say just get it close to 90 degrees and be done with it. The voltage doesnt matter unless it sets a code or the computer doesn't read 100%, which I believe is around 4.2-4.3 volts anyway. If the voltage is too high and sets a code, it's easy to fix by slightly bending the throttle arm with a wrench.
Having done over a thousand bump-stop mods with my ported throttle bodies, I don't think the voltage or exactly 90 degrees is critical. I just wing it everytime and do them all about the same. What I will say though is that there is variance with the throttle shaft where it hits the bump-stop. So some are bent more than others, even some visibly.
I would say just get it close to 90 degrees and be done with it. The voltage doesnt matter unless it sets a code or the computer doesn't read 100%, which I believe is around 4.2-4.3 volts anyway. If the voltage is too high and sets a code, it's easy to fix by slightly bending the throttle arm with a wrench.
