Dyno results. Problem with N75???

[limpabit]

Hi everyone.

Got the car mapped and dyno'ed yesterday. It did not make as much as expected.

But does the boost control for the N75 look normal?

 

[rsmith]

That picture is pretty hard to make out, it really all depends on your mods, is it a stock T28?
Looks like it produced 12.6psi.

 

[limpabit]

It's a biggish T28 from a Nissan Pulsar. Just wondered if the steady increase in boost is normal for the N75.

Max boost was about 17-18 psi

 

[rsmith]

It's a biggish T28 from a Nissan Pulsar. Just wondered if the steady increase in boost is normal for the N75.

Max boost was about 17-18 psi

That would depend on the mapping of the ECU.My stock K04 has a huge surge in boost, 1.7bar then drops holds 1.5bar which then tails off gradually to about 1bar at redline.

Also from the Dyno, it says MBAR x 0.1, you reached Max=126 according to the graph, so 126 x 0.1 = 12.6psi.I am not sure when you are getting 17psi from.

 

[limpabit]

Trying to get my head round all these different values.

Going by here:
http://www.translatorscafe.com/cafe...sure/calculator/millibar-[mbar]-to-psi-[psi]/

1260 (as it's a X0.1 scale) = 18.27 PSI. Or am I doing something wrong.

 

[DannyC87]

That would depend on the mapping of the ECU.My stock K04 has a huge surge in boost, 1.7bar then drops holds 1.5bar which then tails off gradually to about 1bar at redline.

Also from the Dyno, it says MBAR x 0.1, you reached Max=126 according to the graph, so 126 x 0.1 = 12.6psi.I am not sure when you are getting 17psi from.

1 millibar = 0.0145037738

max mbar = 1260

max psi = 18.27

 

[rsmith]

1 millibar = 0.0145037738

max mbar = 1260

max psi = 18.27

ha, i missed a 0