Extender chip question

[Sydwyndr]

I have an alky chip that shows timing at 23/21. My question is about the "Low Gear WOT Spark". It says that default setting for parameter 10 is 8 which is 2 degrees additional advance. Does this mean the chip is really a 25/21?? Or does taking parameter 10 to zero make it 21/21. Just wondering if the 2 degrees additional is figured into the 23/21 scenario.
Thoughts

 

[Roc87]

That is what makes it 23/21. so yeah, setting it to zero would make it 21/21.

 

[salvageV6]

Damm I didn't know that, I just programmend mine out.

Time to put it back in, no wonder I lost 1mph and .1 at the track last time out.

Wish they put that in the manual.

 

[Sydwyndr]

Damm I didn't know that, I just programmend mine out.

Time to put it back in, no wonder I lost 1mph and .1 at the track last time out.

Wish they put that in the manual.

I agree with you.

 

[Marc87GN]

I have an Extender chip alos and was wondering what did the number go up to or does it go from 8 to 0 for either advance or not?

 

[Bob Avellar]

I interpret it this way. The default setting is already at 23/21. Meaning that the 2 degrees extra advance in low gears is already programmed in as the default. So if you want to make it 21/21 you would drop the default number in that cell by 2. I don't have my copy of the manual handy and I don't remember what the default value in that cell is-8 maybe? That is just my interpretation and we all know what that could mean

 

[TurboBob]

the chip is programmed with 2 degrees extra advance as default, this is with the configuration parameter at 8.

set the parameter at 15 and you will have 4 degrees of low gear additional advance (25/21)

Set to zero and you will have 21/21

It is in the manual, I thought it was clear when I wrote it.....

Bob

 

[Bob Avellar]

OK, I'm really confused now. All I get out of this is @ 8 you get 23/21 and @ 0 you get 21/21. I don't understand how going down 8 counts reduces timing 2 degrees or going up 7 counts (from 8 to 15) only adds 2 degrees. What is the correlation? I thought it was simple but now I don't know what the he!! I'm doing.

 

[TurboBob]

low gear timing

0 21/21
1 21.25/21
2 21.5/21
3 21.75/21
4 22/21
5 22.25/21
6 22.5/21
7 22.75/21
8 23/21
9 23.25/21
10 23.5/21
11 23.75/21
12 24/21
13 24.25/21
14 24.5/21
15 24.75/21 <----- OK, I lied, 24.75 degrees in low gear.

Bob

 

[salvageV6]

Bob in your defense it's kinda clear how the programming works in the cell from the manual, and how to add and subtract timing, there's just no correlation really to where you buy a 23/21 chip and it's default timing is already built into the program for that cell parameter, as opposed to stored in code somewhere like other chips.

I just thought the number came up on 8 as a midpoint parameter by default and added 2 extra degrees that needed to be gotten rid of every time my battery went dead or I reset a code etc.

Makes perfect sense now.

Time to dig out the laptop.

 

[Sydwyndr]

It is in the manual, I thought it was clear when I wrote it.....

Bob

No offense but I can't find that anywhere in the manual. I'm not complaining because I really love the chip, no downside to it at all as far as I'm concerned. Looking at the manual it is a 23/21 chip "WOT throttle spark advance degrees: low gear/high gear". Then you see "WOT LoGear Spark: Adjust how much extra spark advance is commanded in first and second gear". When I look at the adjustment specs I see: "Default setting for Parameter 10 is 8 which is 2 degrees additional advance. So in my mind the additional timing takes the chip to 25/21. Oh well, maybe it is just me. I understand now I just wasn't really clear based on the instructions. My bad

 

[Bob Avellar]

0 21/21
1 21.25/21
2 21.5/21
3 21.75/21
4 22/21
5 22.25/21
6 22.5/21
7 22.75/21
8 23/21
9 23.25/21
10 23.5/21
11 23.75/21
12 24/21
13 24.25/21
14 24.5/21
15 24.75/21 <----- OK, I lied, 24.75 degrees in low gear.

OK, now that paints a totally different picture than what I had thought. I guess that's about as clear as it can get, I'll have to print this out so I can loose it with the rest of the manual-as I've done several times before. Thanks Bob.