Nismo Tune too hot for nitrous

G37Sam

I wouldn't run a Nitrous Kit on a High Compression motor without a very a careful tune. You'd definitely have to enrich your mix and retard a few degrees to compensate for the Nitrous.

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gbrettin

You would be the first Nismo that I know of running N2O. My advice would be to start small and data log.

Rockrover

Gotta' be a first for everything right?

I was thinking the same thing wih the data-logging. Start with the 35 shot, log, adjust if required and move up from there. I just have to find the right tuner to help with an e-tune for No2. Any ideas? Z1?

Still wondering how much more advance is programed on the Nismo versus other tunes. Time to make some calls.

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2011 Nismo: Greedy Ti Exhaust, HFC, CAI, Fortune CO w/Swift, 15mm spacers, Kenwood DDX770, WickedCAS Stage III, illuminated door sills, back-up camera, Tint, sound proofing/deadening

gbrettin

I'm running a 100HP shot on my stock tune and been through 7 tanks, 3 tanks @ 75HP and 4 @ 100HP. I'm picking up UPRev pretty soon and will be data logging in the spring. I wish I had something to show you now....

I wouldn't waist my time with a 35HP - 50HP shot. To be honest, 75HP was a great starting point. I heard Z1 has dyno tuned some Z's with nitrous so maybe you could give them a call to pick their brain.

NismoRudyJ

That's real good to know dude! So 7 tanks and not a single issue?

gbrettin

No issues at all, my car runs like new. I should note that I don't run with spray for long at all when I use it.... say 5 - 12 seconds and long durations before the next use.

I forgot to mention that I'm running with a 34 row oil cooler to help with heat.

Jordo!

Ehhh -- OEM tune skews way rich (11:1 AFR) so that helps, but you could be causing microdamage to the pistons and other reciprocating parts you will not find out about for a while... you won't necessarily grenade the motor all at once.

I'd at least look into 1 or 2 step colder plugs (and lots of tuners swear by copper ones, although I think stick with iridium and colder... ask Z1?) and if you are running 91, find 93 or higher when you plan to spray. You might look up a blending chart and add a 1/4 tank of 100 pump gas if you can find it to nudge up the AKI.

Winter temps in Michigan will help too.

Good luck!

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Enjoy it. Destroy it.

gbrettin

I was planning on going one step colder with my plugs in the spring, possible GTR plugs.

Quite possible true about the micro damage, but I plan on doing an engine rebuild in two years so I can accommodate high boost. I could tear down the engine and post pictures then.... But if there are any micro fractures it really wouldn't show.

My car is out only Spring through Fall so the winter temps don't help too much