Creamo3

iTrader: (48)

I have heard what the FP Red is supposed to flow ~57lbs/min - 60lbs/min, but has anyone actually logged the airflow of the Red? If anyone has, I would be interested in seeing the results and what boost they were achieved at. A general mods list w/ any turbo porting would be helpful as well.
Thanks

Edit:

I have taken the data from Bryan @ GST to get rough estimates on airflow based on the items in his logs (see below). It gives a ballpark on the flow of the turbo's compared, and more important is to see the delta between the different options out there.

Here's what I gathered from those graphs:

Stock IX = 1700Hz
Stock IX @ 28psi = 1900 Hz
Green= ~2010 Hz (not sure on psi)
BBK= ~2190Hz (not sure on psi)

Red @ 24.5psi = ~2290Hz
Peak Load = 285 @ 5200rpm
Peak Load lb/min = 34.36
Load @ peak Hz= 255
lb/min @ Peak Hz = 44.34

Red @29psi = 2300Hz @ 7500rpm
Peak Load = 340 @ 4000rpm
Peak Load lb/min = 31.53
Load @ peak Hz= 260
lb/min @ Peak Hz = 45.21

Red @28psi = 2300Hz @ 7500rpm
Peak Load = 320 @ 4000rpm
Peak Load lb/min = 29.68
Load @ peak Hz= 270
lb/min @ Peak Hz = 46.95

Red @ 31psi = ~2600Hz @ 7500rpm (what sort of porting?)
Peak Load = 340 @ 4500rpm
Peak Load lb/min = 35.47
Load @ peak Hz= 295
lb/min @ Peak Hz = 51.3

HTA35R @ 33psi= ~3180Hz @ 7500rpm
Peak Load = 360 @ 4500rpm
Peak Load lb/min = 37.56
Load @ peak Hz= 335
lb/min @ Peak Hz = 58.25

I found the following info. for roughly converting Hz to lb/min. In my searching it also stated you should have IAT & Baro as Eric stated above, but those are used to calculate overall load. https://www.evolutionm.net/forums/ec...low-lb-hr.html

Load= (roughly) hz/rpm*852

g/rev= load/95

lbs min= g/rev*rpm/454

GST Motorsports

iTrader: (8)

I have airflow data from three evos running reds, pump gas and race gas levels (24 to 31psi) I'll assemble them when I get some time.

Creamo3

iTrader: (48)

Thanks and much appreciated; I figured you would have that data

l2r99gst

iTrader: (2)

I'm assuming you are referring to maf Hz values and not mass airflow values?

Creamo3

iTrader: (48)

Do you have the airflow data for the BBK Full's you have tuned? I wouldn't mind seeing that as well for comparison sake.

GST Motorsports

iTrader: (8)

Yes, I log Maf Hz on pretty much every car I tune.

BBK vs Green:



Stock turbo, stock 9 (no mods) with factory tune, custom tune with stock boost, custom tune with stock boost with solenoid side pill out:



Evo 9 turbo at 28psi:



yes Maf Hz, sorry.

Creamo3

iTrader: (48)

Thanks for those, looking forward to the Red logs.

Is there a formula that can convert the MAF Hz to lb/min?

l2r99gst

iTrader: (2)

I derived an equation to get close a while back in the ECUFlash forum. but you also need baro and intake temps.

Maybe Bryan has the load logs. Load is already baro and temp corrected and can more easily be converted to a mass airflow. Load is really a mass airflow/rev.


Eric

GST Motorsports

iTrader: (8)

Yes I can post load and Maf Hz.


I used to log lb/min as well but something messed up with the equation in evoscan and I have been too lazy to fix it.

GST Motorsports

iTrader: (8)

Here we go:

--------------------------------------------------------

Evo 8, 91oct, 24.5 psi peak
Cams, TBE, fmic, ECU-boost
356whp on our dyno



--------------------------------------------------------

Evo 9, 91+meth, 29psi peak
Cams, TBE, fmic, ECU-boost, porting
400whp on our dyno



--------------------------------------------------------

Evo 9, 110oct, 28psi peak
Cams, TBE, fmic, ECU-boost, porting
425whp on our dyno



--------------------------------------------------------

Evo 8, 110oct, 31psi peak
Cams, TBE, fmic, ECU-boost, porting
450whp on our dyno



--------------------------------------------------------

Evo 8, E85, 33psi peak, Buschur HTA35R (FP housing)
Cams, TBE, fmic, Blitz EBC, porting, built 2.3L, cosworth head
558whp on our dyno

KevOVIII

iTrader: (10)

Blitz EBC not ECU-boost, Bryan.

GST Motorsports

iTrader: (8)

Oops copy-paste pwns me.

Creamo3

iTrader: (48)

Interesting, here's what I gather from those graphs:

Stock IX = 1700Hz
Stock IX @ 28psi = 1900 Hz
Green= ~2010 Hz (not sure on psi)
BBK= ~2190Hz (not sure on psi)

Red @ 24.5psi = ~2290Hz
Peak Load = 285 @ 5200rpm
Peak Load lb/min = 34.36
Load @ peak Hz= 255
lb/min @ Peak Hz = 44.34

Red @29psi = 2300Hz @ 7500rpm
Peak Load = 340 @ 4000rpm
Peak Load lb/min = 31.53
Load @ peak Hz= 260
lb/min @ Peak Hz = 45.21

Red @28psi = 2300Hz @ 7500rpm
Peak Load = 320 @ 4000rpm
Peak Load lb/min = 29.68
Load @ peak Hz= 270
lb/min @ Peak Hz = 46.95

Red @ 31psi = ~2600Hz @ 7500rpm (what sort of porting?)
Peak Load = 340 @ 4500rpm
Peak Load lb/min = 35.47
Load @ peak Hz= 295
lb/min @ Peak Hz = 51.3

HTA35R @ 33psi= ~3180Hz @ 7500rpm
Peak Load = 360 @ 4500rpm
Peak Load lb/min = 37.56
Load @ peak Hz= 335
lb/min @ Peak Hz = 58.25

I found the following info. for roughly converting Hz to lb/min; let me know if I'm way off base. In my searching it also stated you should have IAT & Baro as Eric stated above, but those are used to calculate overall load. https://www.evolutionm.net/forums/ec...low-lb-hr.html

Load= (roughly) hz/rpm*852

g/rev= load/95

lbs min= g/rev*rpm/454

l2r99gst

iTrader: (2)

I think your calculations above for lb/min are a little off. For a rough estimation, you have to use the load at the RPM being measured. You are using the peak load but using 7500 RPM.

For example, the FP Red graph on 110 octane shows a load of about 295 at 7500 RPM:

approx lb/min = 295/95*7500/454= 51.3 lb/min

The HTA35R was about 335 load at 7500 RPM:

=335/95*7500/454 = 58.3 lb/min


Granted, you have to understand this an approximation that carries a lot of assumptions with it, but it can get you in the ballpark.

Creamo3

iTrader: (48)

That is actually how I calculated "lb/min @ Peak Hz"; the area I think I may have done incorrectly was "Peak Load lb/min" as I was still using 7500 rpm instead of the rpm peak load was reached at. I plugged in the new rpm's and updated the flow at peak load. This is a ballpark, but it's still better than any other data I've seen for this turbo so far which is somewhat surprising/disappointing.

Bryan,
If you get a chance, can you post the MAF Hz against load for the BBK full's you have done? I would just like to crunch those to give me a ballpark for that turbo at a certain PSI. (Thanks for all the graphs you have provided already)