thanks guys. i refined the design more today. i decided to use a "quad comparator" (yes i know, it's overkill, but i couldn't find a "single comparator") that i found at radio shack. MUCH easier to solder to than the surface mount type that i used in the prototype that i made last week. i tweaked the values of some of the resistors resulting in a more crisp operation of the whole circut. oh yeah, i also soldered it together for real and put it on a circut board. it looks 100 times better. the prototype was a mess!

the shit attached by the clip leads simulates the stock MAP sensor or the motorola one, it doesn't matter which one you use - you just have to re-calibrate the big variable resistor that's attached directly to the circut board


and my crack soldering skills


so that's about it. i'm going to put it in a box and install it in my car. today. finally. i will keep you guys posted.

2016 WRX STi Limited (current)
2001 A4 1.8tqms (donated)
1991 GVR4 #1933 (sold)
old.dsmregistry.com/detail.php?carid=218 (dismantled)