Nismo Tune too hot for nitrous

Jordo! · 12-25-2014, 01:54 PM

Quote:

Originally Posted by 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.

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!

gbrettin · 12-25-2014, 04:22 PM

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

Quote:

Originally Posted by 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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