Normal spool for a 1.6?
#1
Normal spool for a 1.6?
I've recently had my newly turboed miata tuned, it's a 1.6 with a top mount kraken manifold, 3" dp and a Garrett 2560r. I still have a few issues with the tune, but the tuner didn't have very long and just kinda fitted me in where he could. So it's fine and driveable but I wanted to get some opinion on my spoolup. I know it's a bigger turbo on a little engine, but looking at the sticky it looks like my spool might be a bit on the slow side.
4th gear pull:
2200: 0.0
2300: 2.1
2500: 3.4
2700: 5.1
2900: 5.8
3100: 6.7
3300: 7.3
3500: 7.9
3800: 8.5
4000: 8.8
4200: 8.9
I had to let off the gas at that point, in 3rd it reaches full boost around 11psi at 5440rpm. That's not to say is isn't a blast to drive, I'm just curious as to whether this is a normal spool up with my setup or whether it could be better?
I've uploaded the log, I'm new to this so if I'm not logging correctly please let me know. I've attached the current tune too.
Anyway, thanks for any thoughts and expertise, this is all new to me and don't know whether I'm looking for problems where there aren't any!
4th gear pull:
2200: 0.0
2300: 2.1
2500: 3.4
2700: 5.1
2900: 5.8
3100: 6.7
3300: 7.3
3500: 7.9
3800: 8.5
4000: 8.8
4200: 8.9
I had to let off the gas at that point, in 3rd it reaches full boost around 11psi at 5440rpm. That's not to say is isn't a blast to drive, I'm just curious as to whether this is a normal spool up with my setup or whether it could be better?
I've uploaded the log, I'm new to this so if I'm not logging correctly please let me know. I've attached the current tune too.
Anyway, thanks for any thoughts and expertise, this is all new to me and don't know whether I'm looking for problems where there aren't any!
#14
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It's only fun between 5500 and 6500, lol.
#15
Ok, so is that indicative of just a larger turbo on a little engine, or is it in the tune (or a leak?). I'm new to all this so not sure how to figure this out.
#16
That looks really slow. It took me months to chase out all the boost leaks. Wastegate preload also has a pretty dramatic effect. For reference here is a plot of spool on my 1.6L with the T3/T4 churbo from the MKTurbo kit. One of my boost leaks was through the cheap BOV, so moving to a real GReddy made a big difference. At 13psi I was making 205 whp on a Mustang dyno.
#17
That looks really slow. It took me months to chase out all the boost leaks. Wastegate preload also has a pretty dramatic effect. For reference here is a plot of spool on my 1.6L with the T3/T4 churbo from the MKTurbo kit. One of my boost leaks was through the cheap BOV, so moving to a real GReddy made a big difference. At 13psi I was making 205 whp on a Mustang dyno.
I have noticed that my pod gauge only ever reads up to 0psi, never actually shows positive boost, whilst the MS as you can see does. I ran a line to MS and tee'd off of that to the boost gauge, so I would have thought they would show the same thing, but I guess something is screwed up there.
Last edited by James Hill; 05-19-2020 at 03:53 PM.
#18
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That looks really slow. It took me months to chase out all the boost leaks. Wastegate preload also has a pretty dramatic effect. For reference here is a plot of spool on my 1.6L with the T3/T4 churbo from the MKTurbo kit. One of my boost leaks was through the cheap BOV, so moving to a real GReddy made a big difference. At 13psi I was making 205 whp on a Mustang dyno.
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