1.6L 205whp;210lb/ft
#1
1.6L 205whp;210lb/ft
205.4 whp @ 6200 rpm 210.5 lb/ft @ 4700 rpm 16psi of boost
what do you think guys? you're the experts
here's the set up:
ENGINE
1600cc in-line four cylinder, 16 valve DOHC Turbocharged and Intercooled
T3 (45v3) roller bearing turbo
Greddy E-Manage Blue
Greddy Pressure Sensor
Aeromotive Fuel Pressure Regulator
460cc injectors (RX7 NA)
Walbro 190lph in-tank fuel pump
HKS Manual Boost Controller
VR4 front mount intercooler
Mazda GTX Blow-Off Valve
K&N air filter
Mazdaspeed Low Temp Thermostat
Custom cold air intake
Custom 3” mandrel bent exhaust
Custom 2” stainless steel mandrel bent intercooler pipes
Custom 8AWG grounding kit
DRIVETRAIN
Limited Slip Differential
Exedy Racing Tri-puck Clutch Disc (ZD11T)
Exedy Racing Pressure Plate (ZC04T)
EXHAUST
HKS Super Dragger 3” Turbo Muffler
Custom 3” stainless full exhaust
Custom 3” stainless flexi-muffler
what do you think guys? you're the experts
here's the set up:
ENGINE
1600cc in-line four cylinder, 16 valve DOHC Turbocharged and Intercooled
T3 (45v3) roller bearing turbo
Greddy E-Manage Blue
Greddy Pressure Sensor
Aeromotive Fuel Pressure Regulator
460cc injectors (RX7 NA)
Walbro 190lph in-tank fuel pump
HKS Manual Boost Controller
VR4 front mount intercooler
Mazda GTX Blow-Off Valve
K&N air filter
Mazdaspeed Low Temp Thermostat
Custom cold air intake
Custom 3” mandrel bent exhaust
Custom 2” stainless steel mandrel bent intercooler pipes
Custom 8AWG grounding kit
DRIVETRAIN
Limited Slip Differential
Exedy Racing Tri-puck Clutch Disc (ZD11T)
Exedy Racing Pressure Plate (ZC04T)
EXHAUST
HKS Super Dragger 3” Turbo Muffler
Custom 3” stainless full exhaust
Custom 3” stainless flexi-muffler
#3
Deffinately something holding it back.
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#5
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,501
Total Cats: 4,080
The 45v3 is technically a T28, with the same compressor wheel as me but a smaller turbine....Since it's off an R33 I assume it has at least a .63 a/r turbine. In any case, the boost is either not holding to redline or the turbine is too small.
#6
Were you not getting any knock at 15:1 AFR ~3k rpm? That turbo should've been making a reasonable amount of boost at that point... enough to shake up your engine. Your AFR is pretty much a roller coast ride from start to finish.
Here's Arkmage's pull - similar turbo
Here's Arkmage's pull - similar turbo
#9
My vote is a boost leak that doesn't open up until the boost comes on really strong.
Double check all your couplers and take another turn on them. I hope you're using T-bolt clamps. Also, source another MBC, swap it in and pull it on the street to rule out the MBC being bad.
That turbo shouldn't have a problem holding 16psi to redline.
Double check all your couplers and take another turn on them. I hope you're using T-bolt clamps. Also, source another MBC, swap it in and pull it on the street to rule out the MBC being bad.
That turbo shouldn't have a problem holding 16psi to redline.
#17
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,501
Total Cats: 4,080
It's lean, but drops just as soon as the boost hits where it could be detrimental.
i still blame the turbine or wastegate control. based on your TQ number I assume you hit 15psi and it instantly dropped to 12 or so.
here's my old 11-12psi run. stock ecu, FMU for fuel, bipes to retard timing.
this was with a really restrictive exhaust.....remember, our turbos are nearly identical. you lost nearly 40tq between 4700 and 6200. I only lost 15.
Actually, what's the 5.8 ratio? That's supposed to match the axle gearing...I assume it was third gear based on the number they have inputted. You would be at 5.72:1 if they do use overall. 1.330 trans and 4.3 final. That will lower the numbers some, but only a few HP.
i still blame the turbine or wastegate control. based on your TQ number I assume you hit 15psi and it instantly dropped to 12 or so.
here's my old 11-12psi run. stock ecu, FMU for fuel, bipes to retard timing.
this was with a really restrictive exhaust.....remember, our turbos are nearly identical. you lost nearly 40tq between 4700 and 6200. I only lost 15.
Actually, what's the 5.8 ratio? That's supposed to match the axle gearing...I assume it was third gear based on the number they have inputted. You would be at 5.72:1 if they do use overall. 1.330 trans and 4.3 final. That will lower the numbers some, but only a few HP.
#18
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,501
Total Cats: 4,080
yeah looking again, the spool is nearly identical, but your tq drops. either your 3" exhaust is actually 2" or you need better boost control. But you should not be spooling this late with your exhaust. I spool 1000rpms soon now to the same psi with my 3" exhaust.
check our runs here together, you can see how similar they are, where you hit 15psi, but its obvious it drops off...or something is choked.
check our runs here together, you can see how similar they are, where you hit 15psi, but its obvious it drops off...or something is choked.
#20
thank you guys for all your inputs. I would take a look at the exhaust, maybe its really holding back the turbo...
by the way, the exhaust side of the turbo was divided into 2 chambers, exhaust on the wastegate and exhaust on the turbine like this...
do you think guys this is causing the hold back?
by the way, the exhaust side of the turbo was divided into 2 chambers, exhaust on the wastegate and exhaust on the turbine like this...
do you think guys this is causing the hold back?