Nistune Forums

I am going to be installing my nistune with my new T3/TO4e, 420cc benz injectors, and walbro pump on my freshly rebuilt vg30et 8.5:1 engine. The nearest dyno to my house is 150 miles away so I was wondering if someone can help me out with a setup that is similar to mine that should alow my car to run good enough to make it to the dyno to get dialed in for optimum performance.

Here this may help as a starting point.

start with the stock Z31 bin,

change injectors,
change MAF,
change injector latency from 560 to around 1000,
change K-constant from 768 to about 300
and the engine should run.
Wind boost down below 5psi or remove 3 degrees of timing per pound of boost from the timing map at load points 72 through 120 or change all the values in that range to 10 degrees so you make it to the tuner with the engine in one peice.

you may need to hold the rpm up until the engine gets to 50 or 60 degrees till you sort the cold start out with the new injectors.

go for a drive around the block a few times to see how the engine behaves before you set off for the longer trip

thanks i'll give that a try when I get to go home again. My work schedule is keeping me away from my car for a while. I can't wait till things die home and i can go home and play with my z