| The ECU will only retard timing when knock is detected. If it continues, it will go into safety boost until the next key cycle. When it goes into safety boost, it is reading from the low octane maps. JWT's low octane maps are the same. If it is in safety boost, it is reading from the low octane map, which in this case it will be the same. It does not automatically drop timing just because it is in safety mode. It refers to the low octane map which is supposed to have less timing. In the STOCK ECU it does have less advanced timing in the low octane map. But JWT's isn't a stock setup. Their low and high octane maps are identical. There are 4 fuel maps which are also identical in their program. The stock program is not this way. So yeah, the stock program does all this, but JWT's remapping defeats this setup. The ConZult is much easier to use and WAY more helpful that pulling codes or even using the Nissan Consult. My detonation sensor citcuit is defeated. I dont recommend this to other people, but I'm not other people. I watch my EGT's, I listen to the engine, I maintain my car and I run good fuel. The stock detonation sensing circuit sucks anyway. I've tested it by *intentionally* making my car ping (when my sensor was working before). I've yet to see my ignition timing drop when it was detonating(and the sensor was working, I was datalogging it as well as ignition timing). Fact is, the detonation sensor hardware sucks. "So, I want to backtrack to the original purpose of this post. Had I been using a JWT program, I would never have known there was a problem. This is because the safety maps are identical to the 'normal' maps. So when the system finds a fault, it reverts to the safety maps which are the same in a JWT program." YOU" That is a half true statement. The maps are probably the same BUT the stock ECU will retard the timing and cut the boost with the stock boost solenoids. So even with a JWT ECU you WILL notice when in safety boost. " No Kyle, the ECU will not retard timing beyond the map points in the low octane map just because it is reading that map. That's asanine. It reads the points in the low octane map and uses those points as long as there is no detonation within the knock zone of the map. Oh yeah, the knock zone is tiny. It is no longer listening for knock above 3600RPM BTW. I dont start making good power until 3800RPM anyway. Simple point, the knock sensor setup sucks. If there is anything goood I can say about DSM, their knock setup ROCKS. :) Christ, now you guys got me praising DSM's with all of this. LOL I'm bagging because I found this information and chose to share it with everyone. Its not arguable Kyle. I know you know Z's, but based on what you are saying here, you need to do some of your own research on the stock ECU, my programming and JWT's programming. I do have a program Kyle, and a whole lot more people are running it successfully than you would probably think.
[ ashleypowers.com ]
[ agpowers@bellsouth.net ] [ Zemulator Information Sheet ] When pigs dance, you better get it on video... "You never really learn to swear until you learn to drive."
-George Carlin
|
10:34:57 01/15/03
