KZ1

Well, after much tweaking, etc. I now have 15" of vaccum on my new engine. I get max knock of like 18 too. Anyway, for those that have had to listened to my drama unfold, basically I did the following in search fo a better idle with more vacuum.

I adjusted the idle adjustmetn screw to keep the pirmary butterfly open more at idle. I also adjusted the TPS back down so it was in specs with the new adjustment. Basically my theory was that I couldn't lean out my idle enough becuase I wasn't getting enough air. Doing this enabled me to start closing the air screw, which previoiusly I had opened all the way. Itr is about half closed now.

I made changes to the base fuel maps in PFC, and got it to run lean as hell, them messed with the accelration adjustmetn so I could well... accelerate.

So, after starting with 11" vaccum at 950 rpm, I now have 15" at 950 rpm and car runs amazing. Only problems now is a misfire that I have tracked down to a cracked coil insulator. And I broke my AST in my hands, man that thing was brittle. Oh yeah and the paint that splashed on my car from our drunk contractor.


Baically after removing the airpump I coudln't get the idle lean enough, even with adjustnig fuel out with PFC, finally got a combo that works, and I am really happy, so sorry for the long and drown out post. haha

So if any of you are having trouble getting appropriate tuning with no airpump, give those things a try.

Thanks to eveyone that gave me advice, it was a simple fix, just not obvious.

GsrSol

Glad to hear you don't hate it anymore

Tell me something, what is the "coil insulator" you are talking about? Spark plug boot?

KZ1

not the pug boot, but the hard plastic boota round the coil plug, that wire goes into. I took a chip out, now everyonce in awhile the spark is grounding on teh groudn connection by trailing coil pack.

KZ1

Ryan,

Yeah, it was wierd. before all opening the air screw did was make it run better, I wished to myself that it coudl open wider to get mroe air in. then I put two and two together. I wanted to get even more air, then worry about closing the air screw. worked well. I gues my was on the edge to begin with, and removing the airpump put it over the edge. Also, I haev found that making simple correction like in testing fields of PFC is worthless, it responds much betetr to changes in the base map.