the list looks good. eletric tps is more of a convienence thing,i have run micro switches for 10 years with never a problem.

injectors and pump will be fine for a 100,150 has been done on stock fuel pumps,and since you have a new 1,it will be better then having an old pump,but not quite as good as a high flwoing pump.

 

SCORE! do the micro switches come with the kit? I'm going to go a head and order this beast. All I need to do now is learn how to tune it (No clue whatsoever).

 

I dunno, I think of TPS as more than a convenience. It's also added safety. There are a number of items that if they never fail, you're completely fine without. (Your 10 year example is one of them) However, it only takes once, and I'm one person standing here telling you the impact to me. A 'micro-switch' on my system was the direct result of a stuck WOT during a race, which the end result for me was a totaled car. Had I had a TPS, that would have never happend.

You can reduce the risk of failure with a micro switch by using things like loc-tight on the threads used to attach it to the bracket, run a couple of wraps of tape around the switch to ensure if a nut comes off, the bolts don't come out, and cut the additional length of the 'arm' off so it won't get stuck under anything. Just be careful. A TPS just has many less points of failure, and hence is a safer unit.

 

im still trying to figure out how a nut came off and caused the throttle to stick. everytime i have mounted a switch,nothing coulf prohibit the throttle from closing fulling if something fell off.
sorry to hear what happened.

 

Originally I had the switch mounted at the bottom bolt of the stock TB so went at WOT, the 'cam thingy' would touch off the micro switch via a little tab. When I went to the BBK 52mm TB, and since there is no tab like on the stock TB, I had to mount the microswitch on top of the TB. This put the micro switch on top of the cam, so when at WOT, the cam itself pressed the micro switch.

When the nut came out, the switch dropped and was hanging by only one bolt. When I went to WOT, the cam wedged itself under the micro switch, and was unable to return to closed position, hence sticking the throttle at WOT.

Put the car in neutral and began to hit the brakes, and then the car was bouncing off rev limiter. Went to turn the ignition off, and the steering column locked. Unfortunatly it locked at a slight turn and at 120MPH it don't take much to go off the road. Fortunately I was able to turn the key back on and steer past a phone pole which I missed by about 18". After that, it was into a vineyard, and the car came to rest with damage on all sides. I was lucky I missed the pole, or I'd not be here today.

All in all, there are lots of things that if done differently, could have avoided the situation. Had I not been street racing, I wouldn't have totalled the car. Had I not mounted the micro switch on top of the TB, it probably wouldn't have stuck. Had I not cut the arm so short, I probably wouldn't have had to mount it so close to the cam on the TB, had I used lock tight on those tiny little bolts, one probably wouldn't have come out. etc, etc, etc. My main point was, an electronic TPS is an easy thing that can mitigate a lot of risks. Certainly won't make everything fail safe, just one of those added security measures.

-Keith

 

So, if you had a stock TB, you would have been fine?