Ok, now that I've finally gotten the M30 ECCS working, I now have been starting to tune for a turbocharged 9.1 compression.
At first I used a Z32 fuel and timing map because its compression is the closets to mine, at 8.5, the fuel injectors are pretty close in size, and the AFMs are the same. Unfortunately, it gave me ALOT of knock at the point where the turbocharger just begins to spool up, around 2000rpms, and at the point were it isnt high enough to reach positive boost pressure in the manifold. Basically at the same point were i would expect to see zero manifold pressure on an NA, just before the turbocharger starts to take over. I expected this because my turbocharger is going to spool up sooner than those on the Z32.
So, I started trimming down the timing in the area of the map under boost, at 0 manifold pressure, and down to about -10psi. I know these TPs because I logged the AFM voltage against RPMs and then did the math.
The highest AFM voltage i get is just below 4 volts, at 9psi boost. So this would be a TP value of 60. this is the highest TP value that i can reach at 9psi.
Some of the other voltages i have are:
idle 700 1.18
no load 1000 1.25
2000 1.56
3000 1.86
4000 2.07
5000 2.22
6000 2.60
4th gear pull to 5000 @ 9lbs ~4v
From looking at the data that I have logged, all the voltages to RPMs under negetive manifold pressure are close to the same, whether the engine is under load or not. This means that the engine doesn't take in more air under load than when under no load. Makes sense to me.
Anyways, I have gotten the timing down to 15degrees and I'm still getting alot of knock at the point where i step on the throttle and the turbocharger starts to build boost. It mostly stops once the boost reaches maximum.
Here's the ECCS settings
K value = 0118, for 380cc injectors (wanna make sure that I'm running alittle rich here) MB injectors
Null = 4C
base timing set to 15degrees
I have found that if i bring the timing down at the distributer all the way till it wont turn anymore, then the knocking subsides. But, this is not how i want to tune the Z. I should leave the distributer alone, set at base timing, and then adjust the timing maps.
So, i guess what im asking is, do i need to continue to trim the timing down under the above problematic load conditions and see what happens?
What are other people running with the same setup, turbocharged 9:1 compression
here's a copy of the current timing map, compared to the orginal.
At first I used a Z32 fuel and timing map because its compression is the closets to mine, at 8.5, the fuel injectors are pretty close in size, and the AFMs are the same. Unfortunately, it gave me ALOT of knock at the point where the turbocharger just begins to spool up, around 2000rpms, and at the point were it isnt high enough to reach positive boost pressure in the manifold. Basically at the same point were i would expect to see zero manifold pressure on an NA, just before the turbocharger starts to take over. I expected this because my turbocharger is going to spool up sooner than those on the Z32.
So, I started trimming down the timing in the area of the map under boost, at 0 manifold pressure, and down to about -10psi. I know these TPs because I logged the AFM voltage against RPMs and then did the math.
The highest AFM voltage i get is just below 4 volts, at 9psi boost. So this would be a TP value of 60. this is the highest TP value that i can reach at 9psi.
Some of the other voltages i have are:
idle 700 1.18
no load 1000 1.25
2000 1.56
3000 1.86
4000 2.07
5000 2.22
6000 2.60
4th gear pull to 5000 @ 9lbs ~4v
From looking at the data that I have logged, all the voltages to RPMs under negetive manifold pressure are close to the same, whether the engine is under load or not. This means that the engine doesn't take in more air under load than when under no load. Makes sense to me.
Anyways, I have gotten the timing down to 15degrees and I'm still getting alot of knock at the point where i step on the throttle and the turbocharger starts to build boost. It mostly stops once the boost reaches maximum.
Here's the ECCS settings
K value = 0118, for 380cc injectors (wanna make sure that I'm running alittle rich here) MB injectors
Null = 4C
base timing set to 15degrees
I have found that if i bring the timing down at the distributer all the way till it wont turn anymore, then the knocking subsides. But, this is not how i want to tune the Z. I should leave the distributer alone, set at base timing, and then adjust the timing maps.
So, i guess what im asking is, do i need to continue to trim the timing down under the above problematic load conditions and see what happens?
What are other people running with the same setup, turbocharged 9:1 compression
here's a copy of the current timing map, compared to the orginal.
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