My 8374, stock port REW dyno results
09-07-17, 09:59 PM
#1
My 8374, stock port REW dyno results
First off thanks to the guys at Addicted Performance Unlimited for finishing up my FD(fuel, haltech, etc) and tuning it for me.
Info on the setup:
13B-REW built by me
9.0 Rotors lightened, balanced and side clearanced
Stock timing on intake ports but I did clean up the bowls.
Stock exhaust port timing just polished.
E&J apex seals
Low mileage irons and housings. Compression between 109-117 on all faces last I checked.
Roughly 75 miles on engine but 4-6 hours of runtime.
Addicted Performance EFR8374 IWG turbo kit built in house
3.5" Down pipe
3" resonated midpipe
Original Greddy SP exhaust
ACT lightweight Flywheel and 6 puck sprung clutch
DSS Aluminum Driveshaft
My goal was 450 peak rwhp up top and 300ftlbs by 3000 rpms in a "quiet/docile" FD. We didn't hit either goal but I'm still happy with the results considering I'm running the quiestest/most restrictive) 3" exhaust for a FD and the car idles perfect at 750rpms. If you know me well you know I hate loud cars.
Either way the car made 426/375 at 20psi on 93 octane and water/meth injection. It is spiking 22psi and holding 20psi at peak power. It is making 300 ftlbs of torque at 3200 rpm and not dropping below 300 ftlbs until 7200 rpms.
Zach at Addicted will be tuning the car in the next few days on c16 and we will see if it can hit 500rwhp somewhere around 25-27lbs.
Either way I figured some would like to see the results. I'm excited to get behind the wheel and start playing.
Info on the setup:
13B-REW built by me
9.0 Rotors lightened, balanced and side clearanced
Stock timing on intake ports but I did clean up the bowls.
Stock exhaust port timing just polished.
E&J apex seals
Low mileage irons and housings. Compression between 109-117 on all faces last I checked.
Roughly 75 miles on engine but 4-6 hours of runtime.
Addicted Performance EFR8374 IWG turbo kit built in house
3.5" Down pipe
3" resonated midpipe
Original Greddy SP exhaust
ACT lightweight Flywheel and 6 puck sprung clutch
DSS Aluminum Driveshaft
My goal was 450 peak rwhp up top and 300ftlbs by 3000 rpms in a "quiet/docile" FD. We didn't hit either goal but I'm still happy with the results considering I'm running the quiestest/most restrictive) 3" exhaust for a FD and the car idles perfect at 750rpms. If you know me well you know I hate loud cars.
Either way the car made 426/375 at 20psi on 93 octane and water/meth injection. It is spiking 22psi and holding 20psi at peak power. It is making 300 ftlbs of torque at 3200 rpm and not dropping below 300 ftlbs until 7200 rpms.
Zach at Addicted will be tuning the car in the next few days on c16 and we will see if it can hit 500rwhp somewhere around 25-27lbs.
Either way I figured some would like to see the results. I'm excited to get behind the wheel and start playing.
The following 2 users liked this post by djseven:
KNONFS (09-11-17),
RGHTBrainDesign (09-08-17)
The following users liked this post:
ZoomZoom (09-09-17)
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09-08-17, 11:11 PM
#10
The car made 467/400 tonight on c16 and water meth turned off. Car is spiking 26lbs but dropping back to 22 psi pretty much instantly. Peak power was made at 21.5 psi. I'm confident with a different midpipe and catback the car would hold boost better and pick up a sizesble power increase. They are gonna mess with it tomorrow and see if they can get it to hold 25psi.
09-10-17, 06:36 PM
#14
These gear boxes are fine up over 500 unless you're truly beating on them. And by beating on them I mean dropping the clutch at 7500 with your right foot flat... Orrrrrrr...... short shifting second and bogging third with a lot of grip in the rear. Lot of grip definition for me (245/40/18 Falken RT615K+ @20 PSI) That'll shear third all day every day. Ask me how I know.... I'm currently on Transmission #8 
Good Work David! I bet it's a blast to drive! On the dyno...where is it spiking?! looks pretty solid on the graph!
Good Work David! I bet it's a blast to drive! On the dyno...where is it spiking?! looks pretty solid on the graph!
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ZekeO (12-12-20)
09-11-17, 08:02 AM
#15
It will make more power than what is shown here, you can clearly see the top end is having issues( power curve is no longer flat here, looks like it's misfiring) and falling over.
09-11-17, 04:47 PM
#18
I tuned a 8374 medium streetported FC made 504rwhp at 17.5 psi with our 8374 IWG kit. 3" exhaust, RB catback. Tune was not aggressive either. Super quiet car. As you can see in the dyno sheet its carry the power properly in the higher rpms, hence the big peak rwhp.
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ZoomZoom (10-07-17)
09-11-17, 07:24 PM
#20
My car performed pretty much like I thought with the stock port and restrictive exhaust. Final numbers on 93 with water/meth were 443/370 rwtq at 21-22lbs. It carries about about 50 more FTLBs of torque over the chart you posted as well for the majority of the power band. With one of my normal street ports I would have expected about another 10% power increase but losing 3-400 rpms of spool and also giving up torque across the midrange.
Once again, this setup was not designed for peak numbers but I also think it is foolish if you believe this is giving your customers the "wrong impression". If anything, this could be a rare moment your customers are receiving an honest impression.
Last edited by djseven; 09-11-17 at 08:12 PM.
09-11-17, 09:33 PM
#21
Ah yes, the car with the water to air IC, porting and motor that cracked a rear iron right after you tuned it correct? Lets keep it apples to apples. I understand you are salesman and the peak HP numbers help move units.
My car performed pretty much like I thought with the stock port and restrictive exhaust. Final numbers on 93 with water/meth were 443/370 rwtq at 21-22lbs. It carries about about 50 more FTLBs of torque over the chart you posted as well for the majority of the power band. With one of my normal street ports I would have expected about another 10% power increase but losing 3-400 rpms of spool and also giving up torque across the midrange.
Once again, this setup was not designed for peak numbers but I also think it is foolish if you believe this is giving your customers the "wrong impression". If anything, this could be a rare moment your customers are receiving an honest impression.
My car performed pretty much like I thought with the stock port and restrictive exhaust. Final numbers on 93 with water/meth were 443/370 rwtq at 21-22lbs. It carries about about 50 more FTLBs of torque over the chart you posted as well for the majority of the power band. With one of my normal street ports I would have expected about another 10% power increase but losing 3-400 rpms of spool and also giving up torque across the midrange.
Once again, this setup was not designed for peak numbers but I also think it is foolish if you believe this is giving your customers the "wrong impression". If anything, this could be a rare moment your customers are receiving an honest impression.
My comments were not a dig at your setup, sorry if you mistook them that way. You cannot deny the car is misfiring on the top end, turn off the smoothing, and I bet its even worse. Fix that and it will make a lot more power.
Ofcourse your dyno chart has more torque, its up 4+ psi. That FC would pick 21rwtq per psi...
09-11-17, 09:36 PM
#22
That was on E85, but the tune was very soft FYI. 11.1 AFR across peak torque, and only 14 degrees ignition advance.
Here is a pump gas with water injection tune( no methanol).
I didn't tune/build this one. It has a medium streetport if I recall, also keep in mind the dynodynamics read a lot lower than dynojet. Our local one is about 11% difference( I tested it on 3 different cars).
Here is a pump gas with water injection tune( no methanol).
I didn't tune/build this one. It has a medium streetport if I recall, also keep in mind the dynodynamics read a lot lower than dynojet. Our local one is about 11% difference( I tested it on 3 different cars).
09-11-17, 10:22 PM
#23
That was on E85, but the tune was very soft FYI. 11.1 AFR across peak torque, and only 14 degrees ignition advance.
Here is a pump gas with water injection tune( no methanol).
I didn't tune/build this one. It has a medium streetport if I recall, also keep in mind the dynodynamics read a lot lower than dynojet. Our local one is about 11% difference( I tested it on 3 different cars).
Here is a pump gas with water injection tune( no methanol).
I didn't tune/build this one. It has a medium streetport if I recall, also keep in mind the dynodynamics read a lot lower than dynojet. Our local one is about 11% difference( I tested it on 3 different cars).
In all reality I'm still salty about the time I wasted buying a 9180 from your original claims 2 years ago then realizing it would never spool like advertised. I don't want to dig up old threads unless you want me to so I'll leave it at that.
In fairness I have attached the finished tune on 22psi with 93 pump gas and water/meth. The graph posted in my first post was from the first few pulls above 16psi with water/meth turned on. No doubt if we could have gotten it to hold 25-26psi we would have been right there at 500rwhp on stock ports. Either way 300 ftlbs at 3200 rpms is incredible on a 2 rotor setup and retaining a 750 rpm idle is a huge plus.
09-11-17, 11:02 PM
#24
Great numbers and power curve. I 2nd the spool of the 8374 on stock ports is pretty impressive. My car is at Rotorsports getting a tune for 8374, stock ports, pump gas. My dual tip pettit is somewhat restrictive too, so should be good for more comparison. Will start a thread with the honest numbers soon.
09-12-17, 08:32 AM
#25
Ban Peak
iTrader: (49)
Great numbers and power curve. I 2nd the spool of the 8374 on stock ports is pretty impressive. My car is at Rotorsports getting a tune for 8374, stock ports, pump gas. My dual tip pettit is somewhat restrictive too, so should be good for more comparison. Will start a thread with the honest numbers soon.
I'm running a different manifold (IRP), have a large streeeport with a resonated midpipe and RB dual tip, and will be having it tuned for pump gas only.