nitrous help

[blue99ta]

Having a quick look at your log shows a few problems that I believe you need to sort out.
First is that it appears you are setting a p0103 dtc when spraying. This will be caused from the maf measuring both the fuel & nitrous as airmass & hitting the upper frequency limit. To address this you will need to move the nozzle to after the maf, or tune in speed density.
Injector duty cycle is exceeding 100%. This may be due to a supply issue that has been tuned around or too small an injector. Since when spraying you also have the fuel jet running, and are still reading lean on your wideband, I would be looking at fuel supply.
I would also be getting your LM-2 set up to log in Efilive asap.

Ok I will order a bellows or plate before spraying again and also look into a fuel pump. I had 36 lb injectors when I got the engine. Texas speed said those would be fine. Do you think I need to get biggger ones?

[waterbug1999]

do you think I need to shift lower? That is where the guy at the dyno said i should shift.. any info would be great..

My h/c combo I have is shifting at 6600. My buds 402 TA hes shifting at 7000+.

If you have a build 402 (which it looks like you do) I think having the car shift that early is leaving some power on the table, you are barely over where a stock car would shift.

[5.7ute]

What is your max injector duty cyle at WOT without the spray? Since you are running a wet shot they only need to be large enough to cover this condition.

[blue99ta]

Here is a log without spray, I ran it to check timing.

[5.7ute]

That log shows your injectors should be fine.
A few more questions though. Why are you commanding so rich an AFR under WOT conditions? Does your actual/commanded AFR match when running N/A? Where are you getting the fuel supply for the nitrous shot? Fuel rail or stand alone?

[blue99ta]

the wideband says i'm at 12.8 afr. I just had it tuned by a guy who tunes lsx motors pretty well. lsxtune.com I'm using the fuel rail for the fuel. I think I will change the fuel pump this weekend see if that helps..and will move the spray location. the guys who tuned used hptuners and we had the wideband hooke up with it so he can see what its doing. I really want to thank you for all your help..

[blue99ta]

is there any way I can have the tune add more fuel ?

[5.7ute]

the wideband says i'm at 12.8 afr. I just had it tuned by a guy who tunes lsx motors pretty well. lsxtune.com I'm using the fuel rail for the fuel. I think I will change the fuel pump this weekend see if that helps..and will move the spray location. the guys who tuned used hptuners and we had the wideband hooke up with it so he can see what its doing. I really want to thank you for all your help..

I dont want to sound like an ass here, but you are lucky that the maf frequency was pegging & causing the PCM to enter Speed Density mode. There is only some timing taken from a small area in your high octane table between 0.60-0.80g/cyl. If SD mode hadnt been hit, which will make the pcm use the low octane table, you would have been commanding 28 deg advance all the way to 1.2g/cyl. Possibly causing some serious engine damage.
Personally, I would be starting from scratch & getting your N/A airmass model right before spraying.

[5.7ute]

is there any way I can have the tune add more fuel ?

Have a search on AutoVE & Automaf. This will explain better than me on what you are trying to achieve.

[blue99ta]

Ok thanks for taking time to help. What should I work on first with the na mass? I thought it was pretty good but shows what i know... any advice?