Does anyone have a JR SC installed? - Page 2 - Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community

King Tut · 02-11-2014, 02:42 PM

Quote:

Originally Posted by Venator

I have found the JR Supercharger online and it puts "285whp" according to their dyno with stock header and exhaust.

Does anyone have one installed that can tell me if this is right or not?

The important thing to take away from that dyno plot is the 96 whp and 66 ft-lb delta between the stock dyno and the JR dyno. I can tell by the fact that the stock dyno was 186 whp that this is a very high reading dyno

Quote:

Originally Posted by sklimo

Mine was dyno'd on Mustang dyno. Maybe dyno in first post is on dynojet??

It is not on a Dynojet, it is on a Dynapack which is a hub dyno.

Quote:

Originally Posted by MAPerformance

Keep in mind, these numbers are on a hub dyno, which can read higher than a roller type (Dynojet, Mustang, DD, etc.)

They can read higher OR lower depending.

Quote:

Originally Posted by CSG Mike

We do. That dyno is accurate.

Don't focus on the absolute numbers. Focus on the % gain.

48.96% gain ((282.7-186.5)/186.5)

Depends on how you define accurate. I would trust those % gain numbers, yes.

Quote:

Originally Posted by PrimeMotoring

Low reading Mustang dyno here compared to a hub dyno.

Hard to say without knowing more about the Mustang dyno's settings. They can definitely be configured to supply Dynojet equivalent numbers. I will agree that the Dynapack does seem to be reading high only showing a 7% drivetrain loss.

CSG David · 02-11-2014, 02:42 PM

Quote:

Originally Posted by Venator

I have found the JR Supercharger online and it puts "285whp" according to their dyno with stock header and exhaust.

Does anyone have one installed that can tell me if this is right or not?

The percentage gain is more important than the actual numbers. Every dyno will output a different value based on their particular calibration.

jamesm · 02-11-2014, 02:45 PM

those are some pretty impressive gains for a centrifugal sc on a mustang. about what my turbo puts out @ 8psi. rotrex is where it's at if that's the route you want to go.

tendogy · 02-11-2014, 02:50 PM

Why does the FI forum have so few stickies?

OP, these should probably be stickied, and will be a good resource for you:

Forced Induction Buyer's Guide

Supercharger Comparisons

Supercharger/Turbocharger Dyno Thread

Zach3794 · 02-11-2014, 03:05 PM

Didn't we agree that this is a dynapack? Why is everyone saying mustang?

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King Tut · 02-11-2014, 03:14 PM

Quote:

Originally Posted by Zach3794

Didn't we agree that this is a dynapack? Why is everyone saying mustang?

@sklimo's dyno at Prime Motoring was on a Mustang dyno and was used as a comparison since he has the JR kit as well.

Zach3794 · 02-11-2014, 03:17 PM

Was it the same tune as well? Again, not that any of this is outside the scope of dyno to dyno differences

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sklimo · 02-11-2014, 03:21 PM

Quote:

Originally Posted by Zach3794

Was it the same tune as well? Again, not that any of this is outside the scope of dyno to dyno differences

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No I got custom tune

PrimeMotoring · 02-11-2014, 03:38 PM

Quote:

Originally Posted by King Tut

Hard to say without knowing more about the Mustang dyno's settings. They can definitely be configured to supply Dynojet equivalent numbers. I will agree that the Dynapack does seem to be reading high only showing a 7% drivetrain loss.

any dyno can be adjusted to say whatever you want. our settings are default mustang settings and we have had a few unhappy customers with the numbers it has provided.

PrimeMotoring · 02-11-2014, 03:40 PM

Quote:

Originally Posted by Zach3794

Was it the same tune as well? Again, not that any of this is outside the scope of dyno to dyno differences

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We have another customer doing a JR kit soon with stock fueling and stock exhaust with their tuning. Once finished we will be dynoing the car and can compare the difference between his and @sklimo 's car. that should clear the air. same dyno in a climate controlled room. bone stock car with JR tune vs full exhaust and our tune.

King Tut · 02-11-2014, 03:41 PM

Quote:

Originally Posted by PrimeMotoring

any dyno can be adjusted to say whatever you want. our settings are default mustang settings and we have had a few unhappy customers with the numbers it has provided.

Have you considered giving them Dynojet equivalent numbers then? Find a local Dynojet and get a correction factor. That was what I was going to do when I nearly opened up my own shop based around a Mustang AWD-500 dyno.

PrimeMotoring · 02-11-2014, 03:47 PM

Quote:

Originally Posted by King Tut

Have you considered giving them Dynojet equivalent numbers then? Find a local Dynojet and get a correction factor. That was what I was going to do when I nearly opened up my own shop based around a Mustang AWD-500 dyno.

two closest dynojets are about an hour south and east of us that i know of. someone would have to be willing to make the trips.

sklimo · 02-11-2014, 04:00 PM

Quote:

Originally Posted by PrimeMotoring

two closest dynojets are about an hour south and east of us that i know of. someone would have to be willing to make the trips.

Maybe when we put JR oil cooler in and other shit we take a ride???

PrimeMotoring · 02-11-2014, 04:01 PM

Quote:

Originally Posted by sklimo

Maybe when we put JR oil cooler in and other shit we take a ride???

there might be a dyno jet up by you though. CT has a few shops with dynojets

02-11-2014, 03:05 PM	#19
Zach3794 Senior Member Join Date: Mar 2013 Drives: 2013 Scion FR-S, Raven, Manual Location: Vista, CA Posts: 396 Thanks: 81 Thanked 143 Times in 101 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Didn't we agree that this is a dynapack? Why is everyone saying mustang? Sent from my iPhone using Tapatalk __________________ Tuned by Delicious Tuning http://www.delicioustuning.com/node/209 Kraftwerks Supercharged

02-11-2014, 03:17 PM	#21
Zach3794 Senior Member Join Date: Mar 2013 Drives: 2013 Scion FR-S, Raven, Manual Location: Vista, CA Posts: 396 Thanks: 81 Thanked 143 Times in 101 Posts Mentioned: 8 Post(s) Tagged: 0 Thread(s)	Was it the same tune as well? Again, not that any of this is outside the scope of dyno to dyno differences Sent from my iPhone using Tapatalk __________________ Tuned by Delicious Tuning http://www.delicioustuning.com/node/209 Kraftwerks Supercharged

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