Stock Z31 boost sensor map

Steve88t · Post by **Steve88t** » Fri Feb 01, 2008 7:34 am

I gave it a day for the Z31 guys to come forward. Of course they didn't.

Has anyone created a map of the stock boost sensor showing the relation between voltage and boost or vacuum? Bernard had posted one for the 280zx sensor but I have verified it is not correct for the Z31 sensor.

FYI it would look similar to this:
V - PSI
0 - -20
1 - -10
2 - 0
3 - 5
4 - 10
5 - 15
(This is just an example and in no way reflects a real map)

I've got everything I need except a brass T to take measurements and create my own map. Now I need motivation to go to the store.

Matt · Post by **Matt** » Fri Feb 01, 2008 9:40 am

What you could do....

If you know that the boost output is using a gauge on existing sensor, or measuring with some other gauge inline then you could take note of the voltage (either datalog via wideband A/D input) and then plot this against actual PSI for your lookup table

Steve88t · Post by **Steve88t** » Fri Feb 01, 2008 4:00 pm

If this town had a place you could actually get brass fittings then I'd be setup to make a map. My regulator isn't a real "fine" adjustment. But with some fiddling I can get close enough to make a usable map.

Every 2 psi or so should be accurate enough for now. There is no min/max limit on how much resolution I put into this map simply due to the Nistune software, correct?

Matt · Post by **Matt** » Fri Feb 01, 2008 10:06 pm

there is no limitation. we just interpolate between the points that you give the software