FI Dyno thread

[BrahmaBull1990]

Originally Posted by 86TOYO2k17

Stock limiter is 7,400 most tuners raise to 7,500.
Shift 50rpm before limiter. Shift at the last possible moment to still not hit limiter/fuel cut but rev as high as possible.

I specified mechanical torque to the wheel.
Not torque or hp on a dyno graph.

Mechanical torque is calculated after all gear ratio, wheel size etc… are factored in.

You want to shift gears at the RPM when the current gear you are in has LESS mechanical torque at the wheel than the next gear will have at the RPM it will land in after shifting.

On most cars the mechanical torque to the wheel is always higher in the numerically lower gear all the way to rev limiter. You’d need to make like 400ft lbs at 5k and 200ft lbs at 6,500rpm to benefit from short shifting. A 20-30% drop in torque is more than made up for by torque multiplication through numerically higher gearing.

Thank you! I’m learning, bit-by-bit. Thank you for the help and patience. I need to get over my fear of revving it out. I went FI to have fun and let this car live! Saving for a IAG short block now haha

[pmcoffee]

pmcoffee

2013 BRZ Limited AT

- Perrin Vortech V3 SC Kit
- 93 oct
- 9 psi at 7500 rpm
- Perrin oil cooler, JDL UEL header, Perrin 2.5" exhaust from header back, high flow cat in Perrin front pipe, 245/35x18 square
- Tuner - Ed at Fast Performance Tuning using OFT/Rom Raider
https://www.facebook.com/FastPerformanceTuning/
high temp in the test area - 99F SAE correction is 279 hp
Tuner commented on the good lockup/low loss with the AT
- tuned on Dynocom 5000 fx

[Aztec]

Originally Posted by dynarun55

Quite literally the reason I will go with a Jackson racing C30 supercharger

But why not Edelbrock

[reign-AU]

HKS gt3rs kit on 98.

[dynarun55]

- Jackson Racing C-30 supercharger kit.
- OEM headers and exhaust.
- IAG Stage 2 10.5:1 Compression ratio
- AEM 340 Fuel pump
- ID1050x Fuel injectors
- Conditions: Really hot - 85 C ambient. Fuel - 93 Octane pump gas
- Tuner - Junior Barros- JRTuned using Mustang dyno
Installed at ShiftFast automotive and performance, SC-29730
https://www.facebook.com/shiftfastau...andperformance

[dynarun55]

Has anyone here measured an OEM header, exhaust setup on a mustang dyno ? Curious to know if these numbers are on the lower side...
I'm not nearly concerned about the absolute number but just a little concerned if there is potentially a problem... Never had the time to do a baseline without the kit on the car...

Originally Posted by dynarun55

- Jackson Racing C-30 supercharger kit.
- OEM headers and exhaust.
- IAG Stage 2 10.5:1 Compression ratio
- AEM 340 Fuel pump
- ID1050x Fuel injectors
- Conditions: Really hot - 85 C ambient. Fuel - 93 Octane pump gas
- Tuner - Junior Barros- JRTuned using Mustang dyno
Installed at ShiftFast automotive and performance, SC-29730
https://www.facebook.com/shiftfastau...andperformance

[StraightOuttaCanadaEh]

Originally Posted by dynarun55

Has anyone here measured an OEM header, exhaust setup on a mustang dyno ? Curious to know if these numbers are on the lower side...
I'm not nearly concerned about the absolute number but just a little concerned if there is potentially a problem... Never had the time to do a baseline without the kit on the car...

Mustang dynos are known to read lower than most others

[tomm.brz]

Originally Posted by dynarun55

- Jackson Racing C-30 supercharger kit.
- OEM headers and exhaust.
- IAG Stage 2 10.5:1 Compression ratio
- AEM 340 Fuel pump
- ID1050x Fuel injectors
- Conditions: Really hot - 85 C ambient. Fuel - 93 Octane pump gas
- Tuner - Junior Barros- JRTuned using Mustang dyno
Installed at ShiftFast automotive and performance, SC-29730
https://www.facebook.com/shiftfastau...andperformance

buddy why dont you at least decat it and raise boost with a smaller pulley to take advantage of the reduced compression?
You have at least a potential 350HP at the crank to be reached with your good quality 93 octane fuel, it s a shame to let the car be so underpowered

Not saying you have to max it out and risk the engine, but you could easily have more ignition timings with some minor work

[dynarun55]

Originally Posted by tomm.brz

buddy why dont you at least decat it and raise boost with a smaller pulley to take advantage of the reduced compression?

You have at least a potential 350HP at the crank to be reached with your good quality 93 octane fuel, it s a shame to let the car be so underpowered



Not saying you have to max it out and risk the engine, but you could easily have more ignition timings with some minor work

Ha! Ikr... Have a baby boy due in 7 weeks so I wanted a factor of safety of 2 on basically every parameter This build has been a nightmare but that's a story for another time but yes that is something I would want to do in the future..

Sent from my Pixel 3 using Tapatalk

[grumpysnapper]

Harrop.
The latest power run, Motec, on E85, temp at around 15c on a Dynapack.
65mm pulley, IAG 2.5 10.5:1 comp. , ACE headers, no cat, custom 2.75 single exhaust, 4.66 diff. (motor with about 10,000km hard use)

418.85 Nm @ 5035 rpm
374.27 hp (279 KW) @ 7000 rpm

[gen3v8]

SME Spec S (Pulsar G25-550)
98ron
E85
8/12psi
3"dump 2.75" Overpipe, High flow catted front pipe and Q300. ID 1050x injectors
PVS Tuning ( Standard cars typically make from 100-110kw on this dyno)

[PTrain]

2014 FRS MT
- HKS GT2 supercharger kit
- 93 octane
- ecutek tune
- everything else on the car is 100% stock. Stock exhaust. Stock intake box. No idea what clutch is in it, I assume it was replaced at some point in the cars life but it holds ok so far.

[Ignore Your Doctor]

2015 BRZ
JRSC C38 w/ HBP
Walbro 450 pump
ID1050x
Delicious tuning e85 kit 68-70% ethanol
JDL 4-2-1 EL headers w/ Nameless combo pipe and perrin 3" CBE

[canyons]

2013 car, JRSC kit installed 2016

Seven trouble free years so far!
A few ponies have escaped but not too bad!

Pump gas 92 Octane


290WHP/211 Tq.



.

I expect the E85 numbers will be +15-20HP