Supercharger with N2O tuning help

[brobradh77]

This is my tune I got for my Radix with N20..I am running a 50 shot right now but will up it to a 75..I am concerned about a couple of things...I feel the timing is off..I know nothing but at WOT I am seeing 16* down to 12...I know its coming from IAT reduction but I feel it is taking to much and I need to throw more timing at it...Also my shifting points is 1->2 6000 and 2->3 at 5800 I would like to bump them up to 6200 and 6000.. and I'm running a bit rich 10.8ish

Any opinions would be great..I feel the tune is too conservative..Thanks in advance

[MICK]

I have seen a few USA tunes done like this.

D0940 and D0945 should take care off your shift rpm.

Do you have any logs of when your up it on the n2o?

Can I have a looks see?

Cheers

Mick

[brobradh77]

when I get home for lunch I'll post up a log. My tuner is awesome he is just busy busy so I was hoping not to bug him over this. I am a rookie so I need some guidance so I dont blow my truck up...lol

[brobradh77]

there are 2 WOT sections..the first is with out N20 and the 2nd one I am spraying

[brobradh77]

bump

[5.7ute]

You are losing timing to KR under WOT so I would be looking at that first. First blip is up to 7 degrees KR down to 3 degrees KR for the last run.
As for actual spark advance give the engine what it wants, not what the internet says. You may only need 14 degrees to give you best power with a few degrees for safety.

[brobradh77]

You are losing timing to KR under WOT so I would be looking at that first. First blip is up to 7 degrees KR down to 3 degrees KR for the last run.
As for actual spark advance give the engine what it wants, not what the internet says. You may only need 14 degrees to give you best power with a few degrees for safety.

yeah I saw that..when i sprayed it almost all went away..fnny thing is the night befre I tested it and got no KR whats so ever so why it popped up in those 2 runs i dunno.

I'm just looking for guidance..I dont even know where to begin to add timing i.e. RPM range vs. TP% and I dont like how much timing is pulled vs. IAT's and i would like to change that but I do not know what is a safe amount to pull.

[5.7ute]

yeah I saw that..when i sprayed it almost all went away..fnny thing is the night befre I tested it and got no KR whats so ever so why it popped up in those 2 runs i dunno.

I'm just looking for guidance..I dont even know where to begin to add timing i.e. RPM range vs. TP% and I dont like how much timing is pulled vs. IAT's and i would like to change that but I do not know what is a safe amount to pull.

Spark in these PCM's is related to cylinder airmass/RPM and not TP%. Check out the B5913 high octane spark table.
If you open up the {B5913-5914}high low timing_spark advance maf map & spark retard map & plot your log against it you will see exactly which cells are being used, which cells have KR & need timing reduced etc.
Your logs are too short & dont cover enough variables for me to make an educated guess at your spark IAT correction. But I would not be adding timing anywhere until I found & rectified the KR that you are already seeing. Since it appears you are already past the knock threshold, timing will need to be reduced further (or fuel added, sometimes both)to see if the KR is genuine or a mechanically induced(false knock)

[brobradh77]

Spark in these PCM's is related to cylinder airmass/RPM and not TP%. Check out the B5913 high octane spark table.
If you open up the {B5913-5914}high low timing_spark advance maf map & spark retard map & plot your log against it you will see exactly which cells are being used, which cells have KR & need timing reduced etc.
Your logs are too short & dont cover enough variables for me to make an educated guess at your spark IAT correction. But I would not be adding timing anywhere until I found & rectified the KR that you are already seeing. Since it appears you are already past the knock threshold, timing will need to be reduced further (or fuel added, sometimes both)to see if the KR is genuine or a mechanically induced(false knock)

Thanks so my next questionis obviously how do you plot your log against those tables to see what cells are being used? Will the cells highlight?

[brobradh77]

i think i have it figured out..when i highlight a section of my log I can open my tuing file and it highlights the 3 or so cells being used at that time correct?