Memcals

Yes : ) take the sticker off so you can see in the window and put them outside in the sun, takes a bit longer in the Winter down here in the South but faster in the Summer. Check it after a week and if it's blank leave it another day or two just to make sure.

Are you talking about having 3 memcals spare? because if that's the case you probably should wrap up the rest of them memcal in somthing to protect it from the elements like tape or something leaving the window exposed. Better to unsolder the memcal and stick a socket in there so you can leave your memcals in the sun seperate from the memcal. To unsodler the memcal you take your butter knife (unsolder the knock sensor board first so you can access the eprom easily). Then stick the knife under the eprom and go from leg to leg melting the solder starting at the legs near the knife and going into the middle of the eprom all the while putting a little bit of lift on the knife, then go the other end and do the same, after a few runs the eprom will come out. When you solder the socket in you can use a fair bit of solder and just about fill up the little wells around the legs of the socket, if you do that with the memcal laying on its side the solder will run down towards the middle of the memcal and makes a nice looking job of it. All my memcals have been socketed allready otherwise I would take some pitures of this in action, but it's pretty easy really

 

Chuff, that's the general theory, but there is a fairly large area when you will get around about maxiumum power, I've only made a couple of V8 memcals so I haven't tested out what they like (with the V6 I've tried crazy amounts of advance with the spark retard turned off and ended up pinging and going slow : )) 26-29 degrees is pretty good on the V6's, 32 seems to still go ok but it's certainly no quicker in a straight line than than 28, my fastest ever memcal had a total advance of 28 (most of the rev range was 26). Well back to the V8, The memcal my brother runs at the moment has a spark map like this in his VS, I'm sure it could be much better but it does run very well like this, I started with the 185kw VS chip, changed it a fair bit though (max advance is around 31 degrees at the redline), Remeber I'm not expert at this I haven't been doing it all that long

http://usera.imagecave.com/greenfoam/v8.map.JPG

One more thing, that VS is not running a knock sensor either but never runs anything other than Premium and doesn't ping, (there's an option to enable or disable the knock sensor in the program, stock Holden=disabled, HSV=enabled : ) )

 

I forgot to mention when playing with eproms and other electronics don't run up and down on the carpet with your socks on before you do it static electricty can be a bad thing, never busted anything myself but they say it's possible, just be carefull grabs things on the edges not on the legs etc : ) just common sense

 

Your turn Fred : ), I haven't used an eprom except on a very well tested calibrations anyway I like my Atmels, 1 second is better than 5 minutes : )

 

Dr Bob, have you got a list of numbers for the 2 small IC's on memcals and what memcals they were used in? because I have a memcal with a black base, My brothers VS V8 has black memcals but this one was supposed to be a V6 memcal, but now I don't know what it is, Did the VR V6 run a black memcal? it hasn't got the stock eprom anymore so I can't tell from that, it also has a knock sensor board that seems to have factory solder on it. I also got another one that has had the knock sensor board removed and disabled it's supposed to be a sporty chip from a performance shop for Auto V6 VN but it's just dog slow in my car, must be down 20kw compared to the normal chip I run, it's also slower than the stock chip

Today on a wet but still fairly gripy road

This chip = no wheelspin, 0-100 8.6
My current chip = Strong forward drive but also masses of wheelspin to all the way past 5000 rpm in first, continued wheelspin on and after the shift into second 0-100 8.7, in the dry 8.2 (with 50kgs of extra cargo in the car and half a tank of juice)

So I'm not sure whats up with this, but I'll investigate this chip right now : ), it's not a 5D or anything else I have an ECU file for so it'll be a hex editor job :/

 

The normal looking V6 one without the knock sensor runs 33 degrees total advance. I think it's just to rich for my stocky that why it had no power, I imagine it would run good in a worked VN though. Turned out to be a modified $B1 memcal, so I just changed the $5D addresses to the B1 ones on the important stuff to have a look at the tables. Now to see about this mysterious black memcal

 

Yes you can get them from dead VN/VP's and reprogram. You can hook a laptop up to them and reprogram on the fly (with a couple extra devices) and even get a wide band air fuel meter to see how much juice you are using as you drive around and change it for each rpms/throttle as you're driving around just like the race car guys do so you can get your car running as fine as a Buick V6 can, I don't have all that stuff so it ends up costing me the same in fuel and tires and ten times longer to achive the same things

 

Simo, you are doing well so far, last time I heard there were some guys on diy-efi trying to master the VS code and they had about the same things you have done so far, I"ve had a quick look before and there seems to be several spark maps