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Old 11-21-2011, 01:32 AM   #1
07pearlwht
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Default 07 STI 20gxt-r E85 Retune

Event: Dyno pull
Location: Reno, NV
Ambient Temp: 40*F
Elevation: 4660
Weather: Cold, dry
Tires: Goodyear eagle F1 All seasons 225/45/17

Car: 2007 STI
Tuner: Cory Schander (Renosubby) of Mahem Tuning
Dyno Info: Airboy
Transmission: Stock 6 speed
Gear: 4th
Peak HP at RPM: 409whp@5910
Peak Torque at RPM: 434wtq@4130
Baseline hp/tq for a stock on same dyno: 2.5L 210whp
Target Boost: 24.8
Target AFR: 11.3
Fuel: E85
Engine/Power Modifications: Blouch 20gxt-r, Invidia DP, Grimmspeed UP, Tial 38mm EWG, Blitz Nur Spec R, Grimmspeed EBCS, Kstech 73mm CAI, Cobb AP with accesstuner race, ID 100cc injectors, walbro 255, Wiseco pistons, Cosworth bearings, ARP rod bolts.
Driveline Modifications: ACT sprung 6 puck with HD PP.
Suspension Modifications: BC BR coilovers, Hotchkis sways, kstech endlinks.
Other Modifications: Gauges, Harnesses + bar, etc.

I got my shortblock built by A local shop here in Reno (Kspeed). I boke it in and then Cory and I took the car out for a retune. The car is soooo fast it's fun and quite addicting It made full boost 250rpm sooner, it holds 3psi more at redline, and it only took 50%wgdc instead of 90%. My injectors are at 99% now compared to 82% on the last tune. Cory did a very good job. At the same boost and 2* less of timing it made 36whp and 24wtq more over the previous tune, yielding these results;



Previous tune


Enjoy.
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Last edited by 07pearlwht; 11-21-2011 at 01:37 AM.
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Old 11-21-2011, 01:51 AM   #2
ArSoN9
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wow those are great numbers for a 20g and it looks like it really spools quickly

you really outflowed 1000s on a 20g? want ur afr with the e85 around redline?

whats the next step for your build?
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Old 11-21-2011, 02:06 AM   #3
07pearlwht
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Thanks!

I don't know how it maxed out 1000's. It was 99% idc's at redline with 11.3:1 afr's.
I"ll end up getting some 1300's to get some head room and so I can take my car to sea level without having to turn it down.
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Old 11-21-2011, 08:53 AM   #4
xluben
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Looks good. What does your boost curve look like?
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Old 11-21-2011, 11:44 AM   #5
renosubby
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Quote:
Originally Posted by xluben View Post
Looks good. What does your boost curve look like?
24.5 tapering to 21.5 by 6850-6900. I wanted to get another pull but the road I used was getting a little "busy" so we had to get going
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Old 11-21-2011, 01:02 PM   #6
rexblake
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7cm hotside? It seems to be dropping quite a bit by 6500rpm. As for maxing out 1000cc injectors: they are good for about 400whp, and the 20gxtr is a 47lb/min turbo. So, it makes perfect sense. Enjoy the new power!
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Old 11-21-2011, 01:08 PM   #7
xluben
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Quote:
Originally Posted by renosubby View Post
24.5 tapering to 21.5 by 6850-6900.
Numbers look pretty similar to my car with the same turbo and similar boost. I'm at about 80% IDC's on 1200cc injectors, so I think you're right on maxing out the 1000cc's you have. Looks like a lot of fun!
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Old 11-21-2011, 01:12 PM   #8
renosubby
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Quote:
Originally Posted by rexblake View Post
7cm hotside? It seems to be dropping quite a bit by 6500rpm. As for maxing out 1000cc injectors: they are good for about 400whp, and the 20gxtr is a 47lb/min turbo. So, it makes perfect sense. Enjoy the new power!
I think its just when the pull was stopped...
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Old 11-21-2011, 01:17 PM   #9
renosubby
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Quote:
Originally Posted by xluben View Post
Numbers look pretty similar to my car with the same turbo and similar boost. I'm at about 80% IDC's on 1200cc injectors, so I think you're right on maxing out the 1000cc's you have. Looks like a lot of fun!
Yea, When we go to sea level I would think they are going to go up to about 120 lol so 1300 it is
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Old 11-21-2011, 01:19 PM   #10
sackytar
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Nice tune.
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Old 11-21-2011, 01:51 PM   #11
07pearlwht
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Thanks guys.
Cory did an awesome job on the tune.
The 20gxt-r actually flows 44lbs/min. It's a smaller 20g.
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Old 11-21-2011, 02:00 PM   #12
wrxsubiemod
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No its just a proper 20g lol. Great #s man.
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Old 11-21-2011, 02:32 PM   #13
xluben
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Quote:
Originally Posted by 07pearlwht View Post
Thanks guys.
Cory did an awesome job on the tune.
The 20gxt-r actually flows 44lbs/min. It's a smaller 20g.
Blouch rates the 20G XT-R at 47 lbs/min.

http://www.bptstore.com/Subaru-WRXST...er-_p_122.html

It is between the standard 20G (44 lbs/min), and the larger "20G's" (that do 49-50+ lbs/min).
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Old 11-21-2011, 06:37 PM   #14
renosubby
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Quote:
Originally Posted by xluben View Post
Blouch rates the 20G XT-R at 47 lbs/min.

http://www.bptstore.com/Subaru-WRXST...er-_p_122.html

It is between the standard 20G (44 lbs/min), and the larger "20G's" (that do 49-50+ lbs/min).
Cody you always spell Mayhem Wrong lol
I will post a VD plot up as well!

Last edited by renosubby; 11-21-2011 at 07:38 PM.
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Old 11-21-2011, 07:00 PM   #15
Schister66
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Looks good. Based on the torque curve, that turbo still has a little left to give. How do you like the responsiveness of it? Transient response? (aka shift to shift)
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Old 11-21-2011, 07:40 PM   #16
renosubby
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Quote:
Originally Posted by Schister66 View Post
Looks good. Based on the torque curve, that turbo still has a little left to give. How do you like the responsiveness of it? Transient response? (aka shift to shift)
I have a log of that, Boost doesn't really drop but a few PSI... It hits 21psi in first at 5600 ish
To tell you the truth, I haven't been surprised when tuning in awhile... but this did the trick
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Old 11-21-2011, 08:16 PM   #17
07pearlwht
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Quote:
Originally Posted by renosubby
Cody you always spell Mayhem Wrong lol
I will post a VD plot up as well!
Haha I know I do. I always spell it one way and then think it's wrong so I change it.

The cars transient response is great. I don't lose boost in-between shifts and it transfers torque very fast.

I don't know how much the turbo has left. We could probably get a few psi more out of it but it produced very desirable results on 24 pounds. I also did not want to push the tune too aggressively. I just let Cory do what he thought was best.

I'll post a video of how it responds on the street.
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Old 11-21-2011, 08:34 PM   #18
Black07STiGuy
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Man I can't wait to get back home to reno. Very nice man. Looks like a blast!
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Old 11-21-2011, 08:39 PM   #19
langsbr
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I didnt see what kind of intercooler - FMIC?
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Old 11-21-2011, 08:43 PM   #20
07pearlwht
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Stock top mount.
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Old 11-21-2011, 09:36 PM   #21
xluben
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Quote:
Originally Posted by 07pearlwht View Post
Haha I know I do. I always spell it one way and then think it's wrong so I change it.

The cars transient response is great. I don't lose boost in-between shifts and it transfers torque very fast.

I don't know how much the turbo has left. We could probably get a few psi more out of it but it produced very desirable results on 24 pounds. I also did not want to push the tune too aggressively. I just let Cory do what he thought was best.

I'll post a video of how it responds on the street.
Id love to see a video of the tach/speeding/boost gauge when you rip through the gears, or a log. Mine always drops enough to close the wastegate and then takes a split second to open back up, no matter how fast you shift...
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Old 01-15-2012, 03:01 PM   #22
07pearlwht
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Finally got around to getting a short video.
This was right before one of my rods broke, toasting my new short block.

http://youtu.be/4oF-75ZmrBc
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Old 01-15-2012, 09:57 PM   #23
wrxsubiemod
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What rods you snap?
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Old 01-16-2012, 12:54 AM   #24
07pearlwht
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Stock STI rods.
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Old 01-16-2012, 12:50 PM   #25
az_sti_04
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sorry if i missed this, stock inlet size? or 3"?
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