Dyno Tuning, Take a Look FM we want your timingz
#42
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here:
you can see how he adds a lot more timing back in, I think we can get away with it too...when i look at an old map, when i first dynoed with MS i was hitting 20° at 12psi. We all jsut need to stop being cheap ******** and tune that **** yo.
you can see how he adds a lot more timing back in, I think we can get away with it too...when i look at an old map, when i first dynoed with MS i was hitting 20° at 12psi. We all jsut need to stop being cheap ******** and tune that **** yo.
#44
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it looks so pretty in rainbow. I should note that there's a few things going on in my map.
1. high boost, low RPM: who cares
2. low boost, high RPM: cruise. advanced a lot. basically lean your maps out to 15 or 16:1 and then use timing to get you the EGT you want.
3. < 20 kPa: compression braking.
4. < 1000 rpm: idle / off-idle.
Scott I'd actually change that 1000 column to 1300 or something so your idle isn't crossing a boundary into high advance. Or maybe even ditch the 500 column, make it 1300, and put a 1800 ish column between 1300 and 2300 and run about 2 degrees less than the pink cells there.
similar for the vac rows (0-34 kpa). it's a lot of resolution for idle and overrun. maybe go 0, 30, 55, etc. if you look at my map, it has basically 5 points (4 zones) across the load range. mostly the space between is linearly interpolated. idle, off-boost, transition, boost.
1. high boost, low RPM: who cares
2. low boost, high RPM: cruise. advanced a lot. basically lean your maps out to 15 or 16:1 and then use timing to get you the EGT you want.
3. < 20 kPa: compression braking.
4. < 1000 rpm: idle / off-idle.
Scott I'd actually change that 1000 column to 1300 or something so your idle isn't crossing a boundary into high advance. Or maybe even ditch the 500 column, make it 1300, and put a 1800 ish column between 1300 and 2300 and run about 2 degrees less than the pink cells there.
similar for the vac rows (0-34 kpa). it's a lot of resolution for idle and overrun. maybe go 0, 30, 55, etc. if you look at my map, it has basically 5 points (4 zones) across the load range. mostly the space between is linearly interpolated. idle, off-boost, transition, boost.
#47
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I looked at Y8s's timing and then the DIY PNP default timing map. I thought there is no reason to be MORE conservative than DIY on timing so I came up with a hybrid spark map between the 2. might load it in my car today and give it a whirl.
Y8S
DIY
Hybrid
Y8S
DIY
Hybrid
#52
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Got a question about the hybrid map. There is a dip in the advance in the 3400-5200 rpm columns, with most of it in the 4600 column and 4000 column. I am assuming this is because it is the peak torque region of the motor and hence higher cylinder pressures require some timing reduction.
I cruise at 3500-4000 in 5th on the highway, sometimes more . So, in the lower vacuum regions of the map, say up to 55 or 75 kpa, would it be a good idea to add back some advance in order to provide better cruise efficiency? Or would it be too much timing still? Not talking about knock limits for cruise, just best efficiency.
Thanks
I cruise at 3500-4000 in 5th on the highway, sometimes more . So, in the lower vacuum regions of the map, say up to 55 or 75 kpa, would it be a good idea to add back some advance in order to provide better cruise efficiency? Or would it be too much timing still? Not talking about knock limits for cruise, just best efficiency.
Thanks
#53
Getting ants in pants here. Anyone have any suggestion on what timing I could run on CA gas? I want to take one of these tables, subtract out X degrees across the board and go try it.
And when do I get worried about EGT? My gauge was not pegged racing this turbo'ed mustang the other day on the freeway, but was close.
And when do I get worried about EGT? My gauge was not pegged racing this turbo'ed mustang the other day on the freeway, but was close.
#57
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^I've gotta agree.
But I'll caveat with saying that a bone stock 1.6 or 1.8 BP engine is so simple a device that you're gonna be damn close on with the majority of setups we run around here.
I wouldn't take the fuel table for a 2.0FM stroker running a T4 and drop it into my car... but it'd probably still be driveable and be moderately safe if nothing more than rich up top and a little lean at tip-in.
I think we've gotten to the point specifically with tuning MS for the Miata that some of the smarter guys could probably build you a complete MSQ from scratch just by knowing which turbo and injectors you're running and be 90% close.
I think this thread specifically has helped a lot with guy understanding the spark tables and just how much room there is to play. I personally can't wait to see what another 7*-8* of timing will buy me. I think I'm just gonna load up Paul's hybrrid table and be done with it.
But I'll caveat with saying that a bone stock 1.6 or 1.8 BP engine is so simple a device that you're gonna be damn close on with the majority of setups we run around here.
I wouldn't take the fuel table for a 2.0FM stroker running a T4 and drop it into my car... but it'd probably still be driveable and be moderately safe if nothing more than rich up top and a little lean at tip-in.
I think we've gotten to the point specifically with tuning MS for the Miata that some of the smarter guys could probably build you a complete MSQ from scratch just by knowing which turbo and injectors you're running and be 90% close.
I think this thread specifically has helped a lot with guy understanding the spark tables and just how much room there is to play. I personally can't wait to see what another 7*-8* of timing will buy me. I think I'm just gonna load up Paul's hybrrid table and be done with it.
#58
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I gotta agree too. I posted mine so everyone could see where there's postential room for improvement over what they have.
That said, an "aggressive map" for a 10:1 compression turbo car is probably not that aggressive
That said, an "aggressive map" for a 10:1 compression turbo car is probably not that aggressive
#60
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I think this thread specifically has helped a lot with guy understanding the spark tables and just how much room there is to play. I personally can't wait to see what another 7*-8* of timing will buy me. I think I'm just gonna load up Paul's hybrrid table and be done with it.