BNR Sequential vs non-sequential
#1
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Location: Atlanta
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BNR Sequential vs non-sequential
Just ran across this dyno graph, which I thought was pretty interesting and worth sharing. It's an overlay from my car before and after the non-sequential conversion with BNR turbos. I converted because this was a track car and I didn't like the way the dip in the transition disrupted power delivery.
I don't have the ambient temps, but IIRC the non-sequential was spring time (march/april) and the sequential was morning time in either June/July in Atlanta.
Same Dyno machine
Same tuner (Steve Kan)
Same engine
Same turbos
Same boost controller and boost level (15 psi)
Only difference here is the conversion from sequential to non-sequential and the time of year. Not a perfect back to back, but still a better comparison than most i've found...
overview of mods -
Mild Street port - Rick Engman Mazmart
Gasket matched UIM/LIM
HKS V-Mount Intercooler (it is pretty massive)
Downpipe/testpipe (no cats)
Racing Beat catback
UR lightweight pulleys (not underdrive)
Power steering delete
Air conditioning delete
Air pump delete ( w/ Tweakit pulley)
Double throttle removed
550/2000 injectors (injector dynamics secondary)
HKS twin power
Power FC
Greddy Profec B Spec II
93 Octane Shell Pump gas, running regular OMP no premix.
Danny-
Overall, as a track car the loss of power down low is not even noticeable, basically from 4200rpm on the non sequential is better and I'm rarely ever below 4000 RPM while driving on the track. I've taken the car around town and from a complete stop, the non sequential's definitely lack the ridiculous punch that the sequential set up provided, but they're perfectly smooth.
Danny~
I don't have the ambient temps, but IIRC the non-sequential was spring time (march/april) and the sequential was morning time in either June/July in Atlanta.
Same Dyno machine
Same tuner (Steve Kan)
Same engine
Same turbos
Same boost controller and boost level (15 psi)
Only difference here is the conversion from sequential to non-sequential and the time of year. Not a perfect back to back, but still a better comparison than most i've found...
overview of mods -
Mild Street port - Rick Engman Mazmart
Gasket matched UIM/LIM
HKS V-Mount Intercooler (it is pretty massive)
Downpipe/testpipe (no cats)
Racing Beat catback
UR lightweight pulleys (not underdrive)
Power steering delete
Air conditioning delete
Air pump delete ( w/ Tweakit pulley)
Double throttle removed
550/2000 injectors (injector dynamics secondary)
HKS twin power
Power FC
Greddy Profec B Spec II
93 Octane Shell Pump gas, running regular OMP no premix.
Danny-
Overall, as a track car the loss of power down low is not even noticeable, basically from 4200rpm on the non sequential is better and I'm rarely ever below 4000 RPM while driving on the track. I've taken the car around town and from a complete stop, the non sequential's definitely lack the ridiculous punch that the sequential set up provided, but they're perfectly smooth.
Danny~
#5
Original Gangster/Rotary!
iTrader: (213)
I have to say, with the newest BNR Stage 3s sequential offers a much more streetable powerband. I wouldn't go any other way.
Last edited by GoodfellaFD3S; 05-25-12 at 10:31 PM.
#6
I have a FD now!!!!
on this thread they have non seq and seq dyno sheets for stage 3
https://www.rx7club.com/3rd-generation-specific-1993-2002-16/bnr-stage-3-turbos-966671/
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