some people can do a 100 shot without any timing pulled, i really wish i was one of those...

 

A local guy pulled 2 degrees with AccessPort, but I don't have a formal tune. It is possible to spray a 100 shot without even doing that but my Z is a daily driver and a weekend racer with 104K miles on it.

 

I've got 150K miles. Still at 180-182 compression across the board. 5AT only has 40K miles on it...with the transgo kit.

I'm considering installing nitrous but I don't know how much I should spray to maintain safety and longevity. I don't want to blow my engine just yet. I need to wait a year or two. Other things going on right now. I can adjust timing with my Emanage, but I want it to be safe. So at 100 shot you have 2* pulled, you feel pretty comfortable with that?

 

I drag race very often with a 100 shot (with a bit of race gas just in case ). I've been drag racing in my daily driver Z for 4-5 years now with around 1000 passes. After all the abuse my car has taken over the years, I still spray a 100 shot on top of that and drag race. I also do some occasional autoX, too. What do you think?

 

We went through 1-1/2 bottles.
He spent almost 4 hours with it on the dyno adjusting A/F and timing for both normal and with 150 nitrous shot. He even had me change to a larger nitrous jet because he didn't like the results he was seeing with the first one I had put in.
Then after that we took it for a drive and he monitored everything from his laptop through the UTEC to make sure it was correct. He still had to make changes on the road because airflow is different when driving down the road, as compared to a fan blowing a steady flow of air on the front end.
My 350Z map won't work for your G35 because I have a couple mods you probably don't have: An Automatic transmission, Angled Plenum spacer, short ram intake, high-flow cats.
They all make a difference when it comes to the A/F mixture and the timing.
Sorry, but I would feel terrible if you damaged your G's engine. It's not that I care about it costing me money, but If you had the exact same setup as me, I would gladly share it with you.

 

Off-topic:
Garym, I was in Portland like 3 weeks ago. I wish I could've seen your Z while I was there. Your sig says that you're spraying a 150 shot (ZEX rating) so you're spraying a bit more than me (100 shot; NX rating). I want to check out other Zs with spray, but I just haven't seen any (at least not those that are done well).

 

so he adjusted the fuel table and pulled some timing, then monitored knock and a/f on the road. that is something i am willing to try on my own.

about the mods you dont think i have......i have an auto trans too, i have a plen spacer, and i gutted the second half of my stock cats, effectively making them similiar to high flow cats. i would guess we have a very, very similiar setup. i would appreciate the maps if you change your mind, i would never hold anyone else responsible for my misfortune. this is nitrous, its risky and i know that. besides, if i blow it up, then ill just have to build a new, stronger one and turbo it, darn, hahahahaha!

but like i said, i would appreciate the maps and stuff if you change your mind. anything i do to my engine, is my responsibility if it gets damaged, not anyone elses.

 

Seems like you're doing ok! How long have you been using nitrous? How many bottles have you put through your motor?

 

I had it installed about 2 years ago, I think. I rarely use it on the streets, though. I'd say I've been through around 20 bottles.

 

I'm doing some research before installing nitrous on my '03 Z I just picked up and I've kicked around getting a UTEC so I will have a good tune on and off the bottle. 3hree5ive0ero....what octane are you running on your 100 shot? I've sprayed several of my cars and I always have 101 in the tank when spraying whether I really needed it or not just for a little extra assurance so I am curious what you run. I also noticed that you only gained about 62.5 rwhp on your hundred shot and about 52 on the 75 shot. I've always thought NX was really close to rwhp numbers on their ratings. The Zex kit I had on my vette was actually a little over it's rating but very, very close. I gained 158 on a 150 shot. Do you think the dying clutch you mention in your sig could have something to do with that or is that pretty standard on these cars?

 

I used to buy 2-3 gal of race gas (VP 109 oxygenated) and mix it with whatever I have left in the tank when I arrive at the track (usually 3-5 gal of 93). However, this would cost me a fortune every time I wanted to drag race (tracks are 60-100 something miles each way, $40 for nitrous refill, 2-3 gal of 109 @ ~$15/gal, race fee $15-35) and I go pretty often.

I don't buy race gas anymore, though, due to cost and use an octane booster. And no, not the cheap **** you see at your AutoZone or Pep Boys. I dump in half of a container of the Torco Accelerator (32oz, ~$20) with around 5 gal now and that puts me well into the mid-high 100s for the octane rating for a cheaper price. It's more than what I need, but I'd rather risk losing a bit of power than lose an entire block.

As far as my dyno numbers go, if they were done on a different date, they were done at a different dyno. The latest nitrous numbers (2010; Cobb; mustang dyno; 28X whp 36X wtq) got messed up due to negligence. I had forgotten to refill my nitrous bottle, so I was really low on pressure. In addition, the dyno operator purged more than he should have from my already almost-empty bottle. Then the dyno operator decided to keep the VDC on, so when nitrous kicked in (and he held it at WOT the entire time ), it was just being dumped into the engine as the VDC cut power. HUGE moment.

My previous dyno numbers (the one in sig) for nitrous was also messed up, since the dyno (dynojet) couldn't read my torque numbers (211 wtq, rofl = ??? wtq) at all, skewing my hp numbers. Apparently, I shouldn't dyno. That's just as well, since I only care about my track times, which speak for themselves.

My 12.288 run was done on low gas (power/gas was cut off while on nitrous = lean spikes ), with a dying clutch, and my clutch slave cylinder falling out of the tranny bell housing during the run (hence the no 5th gear). Coasting at the end is why I only trapped 107. I think I still managed a pretty decent time.

And yes, NX seems to rate their shots using the whp numbers, while others like ZEX and Dynotune seem to use crank numbers. I use the NX sizes.

Sorry for the stupid long post. I'd rather be verbose and explain everything so others could experiment rather than try to hide details from others.

 

I appreciate the long post. I want to cram as much info about this car into my head as I can. I'm very familiar with nitrous but not familiar with these cars at all.

Thats scary that the dyno operator would hit it with the VDC on and then just hold it at WOT. I'm surprised you didn't end up with a blown motor! I'm planning on starting with a 100 shot and it sounds like you have that figured out as far as how to run it safely. I would like to eventually bump it up to a 150 shot though so even if I could get away with not pulling timing for the 100 shot (I will probably pull some anyway) I will definately need to for the 150 shot. I'm going now to search AccessPort a little bit and also other ways of tuning to see what will be best for me. I'm not really all that fired up to drop $500-$700 on a UTEC to use mainly for pulling a little timing. I know I would be able to get a better all around tune whether on or off the bottle but I want to this to be somewhat of a budget build so I'm trying to nickel and dime it but at the same time I want to be safe.

 

any maps for me gary?.....

 

Well i just ordered a Dynotune kit so it's time for me to figure out how I'm going to pull some timing.