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Old 07-24-2016, 06:59 PM   #1
Krang
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Member#: 134272
Join Date: Dec 2006
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2007 Sti, UGM
Rotated EFR 6758

Default 07 STi: EFR 6758 .64ar v-band - New Dyno 3-17-17

Event: Dyno Tune
Location: PIA Tacoma, WA
Ambient Temp: Washington Weather?
Elevation: sea level-ish
Weather: likely Raining
Conditions: Shop
Tires: 225/40/18

Car: 2007 STi
Tuner: Mike @ PIA
Dyno Info: Mustang Dyno
Transmission: Stock w/ LSD's
Gear: 3rd
Peak HP at RPM: Dyno 370whp ~6,070RPM
Peak Torque at RPM: Dyno 359 ~4500RPM
Baseline hp/tq for a stock on same Unknown
Target Boost: 20 psi ( Very conservative tune )
Fuel: Pump 92
Engine/Power Modifications: Engine work done by PIA in Tacoma WA.
New 09+ EJ257 bored 99.75 CP pistons / rings, ACL race bearings, New heads / new oem cams ARP head studs, Gates timing set, P&L FMIC, AEM 3.5bar MAP Sensor, Grimmspeed ECBS, Borg Warner EFR 6758 .64ar v-band, 3" CAI intake, TGV's deleted, 3mm phenolic spacers, Fluidampnr, secondary injection air pump delted, Evap sytem deleted, Garris rotated kit up /down pipe, Tial 38mm EWG @ 1 bar springs, Killer-B Holy Header, Q300 3" exhaust, ID1000cc injectors, Walbro 400 fuel pump Hard Wired, P&L fuel rail kit w/ regulator, SouthBend Stage 2 Clutch, EWG Rerouted to DP

http://i.imgur.com/pGcMzrf.jpg

Stoked with the results, and I'm thinking on the street it will be even better. Big thanks to Derek, and Andrew and Mike @ PIA for being awesome, couldn't have done any of this without you guys!


Phase two will involve fully wrapping header/up, and a turbo blanket. Addition of a Garrett Cored AWIC setup in the TMIC location, and probably a cutout with a turn down. Hoping to pick up a few hundred rpm of spool swapping the FMIC, and wrapping the pre-turbo exhaust. Might possibly run some higher octane if I can find it locally too.
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Last edited by Krang; 03-22-2017 at 09:55 PM. Reason: Cleanup...
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Old 07-24-2016, 07:15 PM   #2
DerekB707
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Looks good Ryan, enjoy the car man!
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Old 07-24-2016, 10:01 PM   #3
binny
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Crank up the boost a bit in the midrange to fatten the curve up a bit
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Old 07-24-2016, 10:20 PM   #4
rexworx
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Very nice. Garris makes very nice kits...
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Old 07-24-2016, 10:38 PM   #5
cipher_sti
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That's gonna be one hell of a fun powerband in the streets. In for pics and video of the dyno :P
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Old 07-25-2016, 12:33 AM   #6
morrocco88
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Wow! 300 ft lbs by 3400 rpm, very nice! That thing looks like a rocket!!

I'm about to fire up my 2.3 de-stroke motor with a killer B header and an S256, which is like a journal bearing 7670, 58 lb/min. Hoping to get 300 ft lbs by 3800 rpm, which I've seen happen on a few different 2.5L setups. Might try a new SXE 65 lb/min after that, or go EFR.
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Old 07-25-2016, 07:29 AM   #7
point78
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Quote:
Originally Posted by morrocco88 View Post
Wow! 300 ft lbs by 3400 rpm, very nice! That thing looks like a rocket!!

I'm about to fire up my 2.3 de-stroke motor with a killer B header and an S256, which is like a journal bearing 7670, 58 lb/min. Hoping to get 300 ft lbs by 3800 rpm, which I've seen happen on a few different 2.5L setups. Might try a new SXE 65 lb/min after that, or go EFR.
Agreed.

& hurry up man, Ive been waiting & waiting for your results...
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Old 07-25-2016, 08:22 AM   #8
LatentWagen
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Nicely balanced setup! Barely scratching the surface at low boost, it'll be nice to see what it will do with some octane.
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Old 07-25-2016, 02:45 PM   #9
Fierysun
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Do you know around what rpms when you hit full spool?
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Old 07-26-2016, 01:48 PM   #10
mtl_sti
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Great results! I have a very similar build, iag stage 2 tuff, killerb headers, q300, ewg rerouted, ets tmic, efr 7163 v band, etc etc, tuned at 21psi.

Might wanna look into aquamist. Just finished the install and picked up an additional 50whp/tq just by playing with timing and afr, keeping 21 psi.
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Old 07-27-2016, 12:39 AM   #11
binny
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Default 07 STi: EFR 6758 .64ar v-band

Quote:
Originally Posted by Fierysun View Post
Do you know around what rpms when you hit full spool?

Looks like around 3500rpm from the graph
Boost control looks like it's set up to come on smoothly or could be the 1 bar waste gate spring
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Old 07-27-2016, 01:16 PM   #12
Fierysun
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Quote:
Originally Posted by binny View Post
Looks like around 3500rpm from the graph
Boost control looks like it's set up to come on smoothly or could be the 1 bar waste gate spring
Are you certain it's not more around 4K-ish?
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Old 07-27-2016, 10:29 PM   #13
Krang
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Rotated EFR 6758

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It's street manners are very good, it seems to perform better than the dyno would suggest. I'd say full spool by 3.5k in third, but to be honest there's already so much acceleration it's hard to tell.

From a steady state cruise around 2.5k a light tip in of throttle brings boost up to 5psi and it just keeps rising.

Gotta say, this turbo is loud, the good kind of loud. You can hear everything that's happening.
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Old 07-28-2016, 12:59 AM   #14
binny
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Quote:
Originally Posted by Fierysun View Post
Are you certain it's not more around 4K-ish?

I was going off the shape of the curve and the target boost
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Old 07-28-2016, 02:53 AM   #15
Lrn918
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I am really pleased to see this turbo on such a clean plot. I am contemplating this turbo personally. It appears to be a stellar low/mid range performer. I would also be curious to see how it responds to methanol inj (one jet per cyln/aka port inj)

If I may, the tune is leaving a bit on the table. The MAF and injectors are not scaled correctly. The tell-tale rich dip prior to peak torque is the dead give-away. Although the fuel curve holds nicely, on the street you will get the rich dips in transition throttle. My suggestion is the injectors are set too small and the MAF as well. Make the injector scalar larger to eliminate the dip, then tune the MAF to get the curve set. Tweak latencies as needed. Once set right, you will improve performance.

Secondly, you are also entering Open Loop far too early. You can push the transition point later. This will improve response and efficiency.

Best wishes.


Quote:
Originally Posted by Krang View Post
Event: Dyno Tune
Location: PIA Tacoma, WA
Ambient Temp: Washington Weather?
Elevation: sea level-ish
Weather: likely Raining
Conditions: Shop
Tires: 225/40/18

Car: 2007 STi
Tuner: Mike @ PIA
Dyno Info: Mustang Dyno
Transmission: Stock w/ LSD's
Gear: 3rd
Peak HP at RPM: Dyno 370whp ~6,070RPM
Peak Torque at RPM: Dyno 359 ~4500RPM
Baseline hp/tq for a stock on same Unknown
Target Boost: 20 psi ( Very conservative tune )
Fuel: Pump 92
Engine/Power Modifications: Engine work done by PIA in Tacoma WA.
New 09+ EJ257 bored 99.75 CP pistons / rings, ACL race bearings, New heads / new oem cams ARP head studs, Gates timing set, P&L FMIC, AEM 3.5bar MAP Sensor, Grimmspeed ECBS, Borg Warner EFR 6758 .64ar v-band, 3" CAI intake, TGV's deleted, 3mm phenolic spacers, Fluidampnr, secondary injection air pump delted, Evap sytem deleted, Garris rotated kit up /down pipe, Tial 38mm EWG @ 1 bar springs, Killer-B Holy Header, Q300 3" exhaust, ID1000cc injectors, Walbro 400 fuel pump Hard Wired, P&L fuel rail kit w/ regulator, SouthBend Stage 2 Clutch, EWG Rerouted to DP

http://i.imgur.com/pGcMzrf.jpg

Stoked with the results, and I'm thinking on the street it will be even better. Big thanks to Derek, and Andrew and Mike @ PIA for being awesome, couldn't have done any of this without you guys!


Phase two will involve fully wrapping header/up, and a turbo blanket. Addition of a Garrett Cored AWIC setup in the TMIC location, and probably a cutout with a turn down. Hoping to pick up a few hundred rpm of spool swapping the FMIC, and wrapping the pre-turbo exhaust. Might possibly run some higher octane if I can find it locally too.
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Old 07-28-2016, 07:37 AM   #16
pb2004
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Quote:
Originally Posted by Krang View Post
Gotta say, this turbo is loud, the good kind of loud. You can hear everything that's happening.
Maybe you have standard spring instead of stiff one? My 6758 is barely heard, under full boost you can hear a silent sound like sucking the air and that's it.
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Old 07-28-2016, 10:32 PM   #17
Krang
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Location: Kahaluu, Hawaii
Vehicle:
2007 Sti, UGM
Rotated EFR 6758

Default

Quote:
Originally Posted by Lrn918 View Post
I am really pleased to see this turbo on such a clean plot. I am contemplating this turbo personally. It appears to be a stellar low/mid range performer. I would also be curious to see how it responds to methanol inj (one jet per cyln/aka port inj)

If I may, the tune is leaving a bit on the table. The MAF and injectors are not scaled correctly. The tell-tale rich dip prior to peak torque is the dead give-away. Although the fuel curve holds nicely, on the street you will get the rich dips in transition throttle. My suggestion is the injectors are set too small and the MAF as well. Make the injector scalar larger to eliminate the dip, then tune the MAF to get the curve set. Tweak latencies as needed. Once set right, you will improve performance.

Secondly, you are also entering Open Loop far too early. You can push the transition point later. This will improve response and efficiency.

Best wishes.
The tune is Speed Density, might that explain it?

I do have the standard WG Spring, il consider getting the heavier one, I don't mind the sound though =)
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Old 07-28-2016, 11:30 PM   #18
point78
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Quote:
Originally Posted by Krang View Post
The tune is Speed Density, might that explain it?

I do have the standard WG Spring, il consider getting the heavier one, I don't mind the sound though =)
He was talking about the bypass valve spring. They make a stiffer one if your making lots of air noise during cruise.

I was & swapping the stiffer spring eliminated it.

BorgWarner turbos do seem to make a lot of noise thought. Good noise.
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Old 07-29-2016, 02:24 AM   #19
Krang
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Rotated EFR 6758

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Quote:
Originally Posted by point78 View Post
He was talking about the bypass valve spring. They make a stiffer one if your making lots of air noise during cruise.

I was & swapping the stiffer spring eliminated it.

BorgWarner turbos do seem to make a lot of noise thought. Good noise.
Yeah I meant BPV spring, not WG spring, I was thinking the correct thing thats what counts right?
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Old 07-29-2016, 05:34 AM   #20
pb2004
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Quote:
Originally Posted by point78 View Post
BorgWarner turbos do seem to make a lot of noise thought. Good noise.
Yeah, even though I prefer silence during cruising I would like to hear some spectacular roar when WOT, and I don't :-( my EFR is like stock, even no BPV/BOV sound when changing gears. I have turbo blanket and custom alu heat shield wrapped around the turbo, maybe that's what dampened it too much. Do you have some clips of your efr in action to hear it?
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Old 07-29-2016, 11:52 AM   #21
Fierysun
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Quote:
Originally Posted by pb2004 View Post
Yeah, even though I prefer silence during cruising I would like to hear some spectacular roar when WOT, and I don't :-( my EFR is like stock, even no BPV/BOV sound when changing gears. I have turbo blanket and custom alu heat shield wrapped around the turbo, maybe that's what dampened it too much. Do you have some clips of your efr in action to hear it?
Which wrap are you using around the turbo?
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Old 07-29-2016, 04:28 PM   #22
pb2004
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Quote:
Originally Posted by Fierysun View Post
Which wrap are you using around the turbo?
I've got 3 layers actually: Ceramic coating + PTP turbo blanket + Nimbus motorsports alu heat shield.
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Old 07-29-2016, 05:29 PM   #23
Fierysun
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Quote:
Originally Posted by pb2004 View Post
I've got 3 layers actually: Ceramic coating + PTP turbo blanket + Nimbus motorsports alu heat shield.
LOL! That's some very serious heat control you have.
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Old 08-13-2016, 12:41 AM   #24
Krang
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On a local Mustang dyno so I could get a baseline where I'm at now.

TQ is down, not sure why..

Still have 300ftlbs right around 3500rpm, pull was made in third gear again for comparative results.

http://i.imgur.com/Lxnn1p4l.jpg

I failed in taking the picture and didn't get the values on the sides of the graph, you can figure it out if you look at it long enough though.

Last edited by Krang; 08-13-2016 at 03:21 AM.
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Old 08-13-2016, 12:53 AM   #25
morrocco88
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I can't see the graph. How bought some pics of the engine bay and turbo area?
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