Soviet era car, space age turbo, rocket fuel
#1
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (10)
Join Date: Jan 2010
Location: VA
Posts: 3,493
Total Cats: 268
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Yesterday I went to the dyno and made 458whp and 391ft/lbs on the last run.
- E85 (rocket fuel)
- 1.8 block, 84mm wiseco pistons, eagle rods (1884cc displacement)
- stock 99 head from a pick and pull junkyard
- wittyworks hotside parts (manifold, downpipe, exhaust)
- Borg Warner EFR6758 turbo
- Flat-top EUDM intake manifold, stock 99 throttle body
- M-tuned fuel rail in single-feed configuration, stock fuel hard lines, -6AN lines after that
- Fuelab mini FPR, ID1000 injectors, 60psi base fuel pressure
- Walbro 416 E85 pump (part #F90000267)
- Precision 600 intercooler
- Silverado truck coils (aka LS2 coils), 0.035" gap, NGK 4091 resistorless plugs, MSD 32829 wires
- 6 speed transmission from a 2005 Mazdaspeed
- ACT 6 puck xtreme clutch
- Timing map made by Faeflora. Timing map of RAPE
![](http://s95367906.onlinehome.us/photo/mt.net/458whp.png?)
The dyno operator started all the pulls at 3-3.5k rpm which is too late and doesn't reflect my EFR's spool accurately. For example, during the last run it spooled to 29psi at 4300rpm - vs 3700 if the pull was started at 2k
my old 400whp dyno vs 458, showing late spool
![](http://s95367906.onlinehome.us/photo/mt.net/458whp-vs-400whp.png?)
(nothing changed in the hotside since that dyno)
photoshopped 458whp dyno to show how spool SHOULD be like
![](http://s95367906.onlinehome.us/photo/mt.net/458whp-spool.png?)
All 4 runs overlayed
![](http://s95367906.onlinehome.us/photo/mt.net/AllRuns.png?)
Run1: Wastegate, 15psi
Run2: Allofit, -4* timing, dyno fan off
Run3: Allofit, -2* timing, dyno fan on
Run4: Allofit, unadjusted timing map, dyno fan on
Logs:
http://s95367906.onlinehome.us/photo...58whp/Run1.msl
http://s95367906.onlinehome.us/photo...58whp/Run2.msl
http://s95367906.onlinehome.us/photo...58whp/Run3.msl
http://s95367906.onlinehome.us/photo...58whp/Run4.msl
Videos:
- E85 (rocket fuel)
- 1.8 block, 84mm wiseco pistons, eagle rods (1884cc displacement)
- stock 99 head from a pick and pull junkyard
- wittyworks hotside parts (manifold, downpipe, exhaust)
- Borg Warner EFR6758 turbo
- Flat-top EUDM intake manifold, stock 99 throttle body
- M-tuned fuel rail in single-feed configuration, stock fuel hard lines, -6AN lines after that
- Fuelab mini FPR, ID1000 injectors, 60psi base fuel pressure
- Walbro 416 E85 pump (part #F90000267)
- Precision 600 intercooler
- Silverado truck coils (aka LS2 coils), 0.035" gap, NGK 4091 resistorless plugs, MSD 32829 wires
- 6 speed transmission from a 2005 Mazdaspeed
- ACT 6 puck xtreme clutch
- Timing map made by Faeflora. Timing map of RAPE
![](http://s95367906.onlinehome.us/photo/mt.net/458whp.png?)
The dyno operator started all the pulls at 3-3.5k rpm which is too late and doesn't reflect my EFR's spool accurately. For example, during the last run it spooled to 29psi at 4300rpm - vs 3700 if the pull was started at 2k
my old 400whp dyno vs 458, showing late spool
![](http://s95367906.onlinehome.us/photo/mt.net/458whp-vs-400whp.png?)
(nothing changed in the hotside since that dyno)
photoshopped 458whp dyno to show how spool SHOULD be like
![](http://s95367906.onlinehome.us/photo/mt.net/458whp-spool.png?)
All 4 runs overlayed
![](http://s95367906.onlinehome.us/photo/mt.net/AllRuns.png?)
Run1: Wastegate, 15psi
Run2: Allofit, -4* timing, dyno fan off
Run3: Allofit, -2* timing, dyno fan on
Run4: Allofit, unadjusted timing map, dyno fan on
Logs:
http://s95367906.onlinehome.us/photo...58whp/Run1.msl
http://s95367906.onlinehome.us/photo...58whp/Run2.msl
http://s95367906.onlinehome.us/photo...58whp/Run3.msl
http://s95367906.onlinehome.us/photo...58whp/Run4.msl
Videos:
#2
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (10)
Join Date: Jan 2010
Location: VA
Posts: 3,493
Total Cats: 268
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
Some notes
- Fuel pressure was higher than it was supposed to, for some reason it was hovering around 63psi effective pressure
- Wastegate boost was only 15-16psi so I could have probably reached 30psi or higher if I tightened the wastegate arm. All the "allofit" pulls were hitting 0% wastegate duty.
- 90% injector duty cycle, meaning there was still fuel left!
- Turbo speed sensor was disconnected, sadly :(
- Fuel pressure was higher than it was supposed to, for some reason it was hovering around 63psi effective pressure
- Wastegate boost was only 15-16psi so I could have probably reached 30psi or higher if I tightened the wastegate arm. All the "allofit" pulls were hitting 0% wastegate duty.
- 90% injector duty cycle, meaning there was still fuel left!
- Turbo speed sensor was disconnected, sadly :(
#10
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (10)
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,984
Total Cats: 358
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
#11
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (10)
Join Date: Jan 2010
Location: VA
Posts: 3,493
Total Cats: 268
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
#12
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
iTrader: (10)
Join Date: Jun 2006
Location: Athens, Greece
Posts: 5,984
Total Cats: 358
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
VVT head with no work apart from SS valves, "93" octane fuel ("100 RON"), max RPM is 7300, JE 84mm/8.6:1, 99 intake w/VICS, GM coils, RX-7 FD gearbox, MS2. Target AFRs are 11.3-11.5, timing is 8-15* retarded compared to your map posted above.
#13
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I can get a 3900-4000rpm full spool (29psi) out of a 3076 on a 1.9L if I start at ~2700rpm.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
I also got 428hp at 29psi at -5* on an already conservative ignition map (was out of water on the WI system and didn't notice on the dyno).
So somehow I was expecting more out of this setup, given the 3076 is an old turbo by todays standards.
#19
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I may be a bit late to this ( been focusing on getting my car running and not the forums )
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
#20
Elite Member
![](/mt2011/images_td/ranks/supporter1.gif)
Thread Starter
iTrader: (10)
Join Date: Jan 2010
Location: VA
Posts: 3,493
Total Cats: 268
![Default](https://www.miataturbo.net/images/icons/icon1.gif)
I may be a bit late to this ( been focusing on getting my car running and not the forums )
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
Our builds are about identi-chokes- Not really, I don't have awesomeness :(
But, I noticed, why does the gear ratio keep changing in all 4 runs? I thought it's suppose to stay the same.
Also smoothing: 5, seems like a lot. I'm no expert on this stuff though, just trying to understand it.
Sorry if it seems I'm critiquing.
The rear shocks compress A LOT under full power - see vidya
Regarding smoothing - I always use 5. For some dynos its unneeded, for other it is. Another factor is ramp settings they use on the rollers - the dyno I went to before did long pulls (~10 seconds) vs the last time it was a 5 second run. It can be clearly illustrated if you use the 'time' scale in WinPEP -
![](http://s95367906.onlinehome.us/photo/mt.net/uncorrected-vs-time.png??)
Finally, in the same image above I turned off any correction factors. BAM all of a sudden I'm making 474whp
![Jerkit](https://www.miataturbo.net/images/smilies/jerkit.gif)
It was a very nice day and ambient conditions were better than SAE specs.