FWIW is sprayed a 150 shot many many times on completely stock tune. Never hurt a thing and ran its best on the stock tune. Never picked much time up after playing with timing, A/F ratio etc..

 

i know there is a bunch of guys in the nitrous forum on ls1tech, who help people read there plugs. They know there stuff. Look over there. Alot more help on that side when dealing with nitrous.

 

Yes, that is correct. Most n2o kits come a lil rich for safety. fuel tuning is needed to get the very most out of any setup.

Hey Kyle! I guess you forgot all that tuning we did that resulted in you picking up .2 on my tune alone and allowing to to go to srd and put it on JB. I bet JB remembers! Funny how people forget the favors people do them.

 

Yea, I remember ****** up my rims that night on the concrete when it left lol, but he did get me, no doubt about it. still wanted that re-match ever since..............

 

when I was jetted for 125 wet, I had about 28-29* timing logged on the scanner. After jetting up to 150, in summer heat and the same timing, I've had no problems. Now that its cooler, I can hear some detonation at the top of third gear, so I've jetted it back to 125. I think I can run the 150 jetting, just have to pull afew degrees out of the tne.

My stock tune for my truck never showed more than 21* timing under WOT, so I would guess you would be fine with a stock tune. If you try to lean it out to get more power, I would get a wideband to be sure.

 

The stock narrowband O2 sensors are only accurate around stoich 14.7 afr, which I believe is about 490 mV. The farther they get away from that number the less accurate they become.

Read the plugs and use your scanner!

 

I'm updating my thread because I finally got my wideband installed. Im going to tune in the air fuel ratio with the 100 shot tomorrow and head to the track this Friday night.
I spent a good part of the winter getting educated with my HP Tuners, so I'm hoping for some good results. Last years best was 12.6 on a stock tune, stock manifolds and a 100 shot running super rich.

 

Results! I got 3 runs in last night before the rain. the AFR with nitrous was tuned to 12.3, running 16 degrees of timing. first run was a 12.7, second run 12.7. I then added 2 degrees of timing for 18 total and ran a 12.5. All 3 runs I sprayed after rolling out...last years best was a 12.6, spraying out of the hole. Im very pleased.
My wife took a video of me running a later model mustang with a blower. You can hear hecklers in the crowd saying, that truck wont do anything. He caught me on the big end, but he found me to find out what I was running... I told him its a bone yard 6.0, stock cam, stock heads, stock torque converter, 100 shot of go. YUP!!

 

One more update. I bumped up to a 125 shot, richened up the fuel to 12.0:1 AFR and the timing set to 20 degrees. This yielded a personal best of 12.2 @ 111 mph. I tried 22 degrees, but noticed one degree of knock retard, so I pulled it back to 20 degrees. Truck runs strong with this tune up.

 

there may be some left in your combo still. the wideband is always awesome for quick reference. now learn how to read plugs and tweak out an extra tenth or two. keep your afr at 11.7-12.2 but watch your timing mark on the strap after every pass and adjust timing from there. did you ever adjust the sensitivity of your knock sensors? a fraction of a second of KR wont hurt anything. it's usually false if the AFR is in check. the big issue is when your computer pulls timing across the board.