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Old 06-24-2014, 01:20 AM   #1
Visconti
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Event: Dyno Tune !
Location: MR Performance| Westbury, NY
Ambient Temp: 60ish degrees
Elevation: sea level
Weather: Very nice out

Car: 2015 WRX
Tuner: Visconti
Dyno Info: Mustang AWD-150
Peak HP at RPM: 300WHP @ 5400
Peak Torque at RPM: 315WTQ @ 3500
Baseline hp/tq for a stock on same dyno: 242WHP / 260TRQ (Peak)
Target Boost: 19PSI
Target AFR: 11.5 - 93OCT
Fuel: 93 unleaded
Engine/Power Modifications:

K&N Drop-in filter
Nameless Performance Catless J-Pipe
Nameless Performance Front Pipe
Invidia Q300 Catback
Visconti EcuTek STG2 Tune - 19PSI


I had mentioned in my FXT thread for the past several months a few of us have been working with EcuTek's new tuning suite 'SubaruDIT' for the FA20DIT platfform, I couldn't be happier.
High speed datalogging, and super fast block programming makes tuning really easy.

So what we currently know about the FA20DIT motor is it's a high compression 10.6:1 direct injected and has 1500CC injectors.

Direct Injection works differently than Port Injection so although the car has 1500cc injectors we can only use about half of it, so we have 750cc worth of fueling to play with

The FXT and WRX both have very similar ECUs, actually looks like a Nissan Juke ECU from the outside. Like the Juke the ECU lives in the engine bay.
The FXT has a 1.5MB ROM, and the WRX has a 2.0MB ROM. The WRX ECU is also a little bit quicker at processing things so it actually flashes faster than the FXT.

The FXT and WRX target boost is about 14PSI, but spikes to 20-21 all the time.

Throttle Mapping on these cars are aggressive, part throttle is basically like full throttle

The WRX baselines at about 240WHP on MR Performance'es Mustang Dyno, about 10-15whp less than a stock 2015 STi

With our STG1 Flash we pick up 30WHP without any issues. I've personally have pushed the car harder but the car is very sensitive to timing changes because of the high compression. The powerband drops after 6K unless you hit the car with a bunch of timing, which isnt advisable if your on pumpgas. When running higher octane or ethanol I'm able to run more timing in the upper RPMS and the power doesn't drop off as much.

STG1 Tune Picks up 20/30WHP on 93OCT
STG2 Tune picks up 50/60WHP on 93OCT

Here is a Stock vs STG1 on 93OCT vs STG1 on a Ethanol Mix




Here is a Stock vs STG1 on a Ethanol Mix vs STG2

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Last edited by Visconti; 07-10-2014 at 11:03 AM.
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Old 06-24-2014, 02:07 AM   #2
beaumier2006
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So the 2015 WRX is tunable now?
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Old 06-24-2014, 02:39 AM   #3
|Rev|
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Seems like great results for a stage2 wrx. I know you said the timing drops off at 6k but doesn't the car red line at close to 6800? Just curious why you stopped the graph / pull at 6. Safety?
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Old 06-24-2014, 05:56 AM   #4
juanmedina
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I want to see stock vs just an E85 tune…..
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Old 06-24-2014, 06:05 AM   #5
arghx7
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Could you discuss the AVCS strategy you are seeing with the stock tune? I'm curious as to whether we are seeing a transient scavenging + boost spike built into the tune when you tip in. Also, any comments on the injection timing and rail pressure?
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Old 06-24-2014, 10:21 AM   #6
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WOW! those are impressive numbers, I have been checking everyday for months now for a tune to come out on the 15' WRX and all I can say is Finally! Keep up the good works guys!

Subscribed!
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Old 06-24-2014, 10:40 AM   #7
wgr73
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Wow, awesome results!!!

John, did you try a leaner afr by chance (12.x)? I've wondered how the wrx DI system would respond to this. This is so sweet.

Can't wait for E85
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Old 06-24-2014, 10:52 AM   #8
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Results took way too long to be released. Hope these motors hold up and are more stout than the ej's. Great work John/Ryan and the M.R. Performance team. See you guys soon for random EVO brokenness.
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Old 06-24-2014, 11:02 AM   #9
wgr73
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Quote:
Originally Posted by j255c View Post
Results took way too long to be released.


Reverse engineering an ECU, writing software, then testing the software. That's not an overnight ordeal. Heck, some people haven't even received their cars yet...


EDIT: Wait, maybe you were just joking.
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Old 06-24-2014, 11:13 AM   #10
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Quote:
Originally Posted by wgr73 View Post



Reverse engineering an ECU, writing software, then testing the software. That's not an overnight ordeal. Heck, some people haven't even received their cars yet...

EDIT: Wait, maybe you were just joking.

Lol...a lot of work goes unseen.

Thought we would see more power than this honestly. Not tuners fault. The stock turbo must be tiny. News to me the STi diddnt get DI because if hpfp. They still put one inx the wrx tho.
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Old 06-24-2014, 11:25 AM   #11
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John ran a 13.9 @ 103 in a CVT Forester with a 2.4x 60ft. The FXT made 275whp as opposed to the WRX 300whp. Turboback/tune 6MT WRX should be good for low 12's @ 106-110ish with a 1.7x 60ft. I'll be happy with that.
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Old 06-24-2014, 11:59 AM   #12
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more power? this is more then the stock sti. while probably saving you 8 grand
Quote:
Originally Posted by mofoSTI View Post
Lol...a lot of work goes unseen.

Thought we would see more power than this honestly. Not tuners fault. The stock turbo must be tiny. News to me the STi diddnt get DI because if hpfp. They still put one inx the wrx tho.
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Old 06-24-2014, 12:09 PM   #13
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Wait, aren't the best '15 STI protunes putting out 295 or so on STI? So tuned WRX > tuned STI? Wow!
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Old 06-24-2014, 12:37 PM   #14
just slothing
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Quote:
Originally Posted by freebird_78 View Post
Wait, aren't the best '15 STI protunes putting out 295 or so on STI? So tuned WRX > tuned STI? Wow!
Not comparable unless on same dyno but...

If Subaru ever puts out a 2.5 liter FA DIT engine it's going to be a ****ing monster.

Also, aside from the numbers, that torque band looks to be beautifully horizontal all the way to 6k with a straight HP curve to match. Also, this is purely speculative but I have to wonder if the FA20DIT is inherently strong engine since it has to deal with the crazy boost spikes even straight out of the factory.

Last edited by just slothing; 06-24-2014 at 12:43 PM.
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Old 06-24-2014, 12:54 PM   #15
SoapBox
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Quote:
Originally Posted by toph View Post
John ran a 13.9 @ 103 in a CVT Forester with a 2.4x 60ft. The FXT made 275whp as opposed to the WRX 300whp. Turboback/tune 6MT WRX should be good for low 12's @ 106-110ish with a 1.7x 60ft. I'll be happy with that.

Clearly it's a bit of a high reading dyno. I'd be shocked to see a "stage II" WRX running low 12's at 110.

Wouldn't we be more likely to see low 13s at 105-106?

I mean, 60 wheel horsepower over stock doesn't knock off that kind of time/add that much trap.

Last edited by SoapBox; 06-24-2014 at 01:00 PM.
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Old 06-24-2014, 01:18 PM   #16
toph
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Quote:
Originally Posted by SoapBox View Post
Clearly it's a bit of a high reading dyno. I'd be shocked to see a "stage II" WRX running low 12's at 110.

Wouldn't we be more likely to see low 13s at 105-106?

I mean, 60 wheel horsepower over stock doesn't knock off that kind of time/add that much trap.
Dyno doesn't mean anything and I am not using the numbers for anything but a comparison. It's a tool to compare one car to another. Let me break it down for you:

Per cars101:

'14 FXT = 3625lbs
'15 WRX = 3302lbs

300lbs difference.

Each 100lbs generally = .1 in the 1/4 so .3 based off weight alone.

Each .1 in the 60' = .2 on the ET.

.7 difference from 2.4 to 1.7 60' = 1.4 seconds off ET.

1.4 + .3 = 1.7 seconds off ET.

13.9 - 1.7 = 12.2

This is off of weight savings and driving alone, not factoring in the 25whp.

I put a range of what I think it would trap and you seem to agree as I said 106 to 110mph.
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Old 06-24-2014, 01:24 PM   #17
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Quote:
Originally Posted by juanmedina View Post
I want to see stock vs just an E85 tune…..
Seriously. I had no idea the WRX had 1500cc injectors stock. I wonder if the fuel pump is upgraded as well to handle the flow of e85. It would be bad ass to have a bone stock WRX with e85 tune at somewhere close to 300whp/320ft-lb TQ.

Quote:
Originally Posted by just slothing View Post
Not comparable unless on same dyno but...

If Subaru ever puts out a 2.5 liter FA DIT engine it's going to be a ****ing monster.
This is exactly what I think of whenever I see threads like this for the 2015 WRX. My initial reaction is always, "screw this I'm going to trade in the STI for a new WRX." But then I think about the possibility of an fa25 in a 2017 STI (completely speculating here) and realize that it would just be too great to pass up. That is assuming they don't jack the price up too much to account for it. But imagine the possibilities of an fa25 on e85.
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Old 06-24-2014, 01:25 PM   #18
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Excellent results. I recall being berated for suggesting the 2015 would make 300 whp with stage 2 equivalent modifications.

So with such large injectors, does that mean this car is effectively e85 ready, with only a tune needed?
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Old 06-24-2014, 01:33 PM   #19
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Awesome results. Only makes me think what is possible with some more time as well as R&D. Just the idea of a FA25 is making me set aside money, haha.
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Old 06-24-2014, 01:37 PM   #20
mtarr07
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Quote:
Originally Posted by toph View Post
Dyno doesn't mean anything and I am not using the numbers for anything but a comparison. It's a tool to compare one car to another. Let me break it down for you:

Per cars101:

'14 FXT = 3625lbs
'15 WRX = 3302lbs

300lbs difference.

Each 100lbs generally = .1 in the 1/4 so .3 based off weight alone.

Each .1 in the 60' = .2 on the ET.

.7 difference from 2.4 to 1.7 60' = 1.4 seconds off ET.

1.4 + .3 = 1.7 seconds off ET.

13.9 - 1.7 = 12.2

This is off of weight savings and driving alone, not factoring in the 25whp.

I put a range of what I think it would trap and you seem to agree as I said 106 to 110mph.
I'd have to agree. If anything, I think you are still lowballing it a bit. Like you said, you aren't factoring in the 25whp. Or the aerodynamics even. I wouldn't be suprised at all to see this setup trap 110mph or more. Lets be real, the current 2009-2014 WRXs are trapping 106-110mph with basic bolt ons. Whats so farfetched about a slight improvement over the older model?
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Old 06-24-2014, 02:01 PM   #21
wgr73
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Quote:
Originally Posted by scooby24 View Post
So with such large injectors, does that mean this car is effectively e85 ready, with only a tune needed?
The injectors are there. The long pole will probably be the HPFP (as with most DI motors)

Last edited by wgr73; 06-24-2014 at 02:15 PM.
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Old 06-24-2014, 02:04 PM   #22
just slothing
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Quote:
Originally Posted by sc00ter View Post
Seriously. I had no idea the WRX had 1500cc injectors stock. I wonder if the fuel pump is upgraded as well to handle the flow of e85. It would be bad ass to have a bone stock WRX with e85 tune at somewhere close to 300whp/320ft-lb TQ.



This is exactly what I think of whenever I see threads like this for the 2015 WRX. My initial reaction is always, "screw this I'm going to trade in the STI for a new WRX." But then I think about the possibility of an fa25 in a 2017 STI (completely speculating here) and realize that it would just be too great to pass up. That is assuming they don't jack the price up too much to account for it. But imagine the possibilities of an fa25 on e85.
Yes, it's fun to imagine but don't start putting pennies away yet! Consider that the STI has made ~300 hp for the last 10 years it seems like Subaru just doesn't want the hassle of making a 400 hp road car even if they have the ability to do it. Realistically they will just beef up this 2.0 to produce 300 hp in the production STI when it finally gets a new engine.
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Old 06-24-2014, 03:37 PM   #23
Ultimateone
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Damn these numbers are very impressive for a car that just came out and with all new mods and tricks to be learned the numbers will only go up!
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Old 06-24-2014, 04:14 PM   #24
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Do you have more details and graphs on stock vs the stage 1, tune only? I'm curious overall how the FA20DIT responded. 30whp with no other mods sounds pretty nice... That stage 1 number was with it tuned for 93 oct as well, right?
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Old 06-24-2014, 04:18 PM   #25
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Quote:
Originally Posted by toph View Post
Dyno doesn't mean anything and I am not using the numbers for anything but a comparison. It's a tool to compare one car to another. Let me break it down for you:

Per cars101:

'14 FXT = 3625lbs
'15 WRX = 3302lbs

300lbs difference.

Each 100lbs generally = .1 in the 1/4 so .3 based off weight alone.

Each .1 in the 60' = .2 on the ET.

.7 difference from 2.4 to 1.7 60' = 1.4 seconds off ET.

1.4 + .3 = 1.7 seconds off ET.

13.9 - 1.7 = 12.2

This is off of weight savings and driving alone, not factoring in the 25whp.

I put a range of what I think it would trap and you seem to agree as I said 106 to 110mph.
I certainly don't disagree with the lower end of your range.

Again, I just don't see how a car that traps, what 101 or 102 stock...now traps 110 with the addition of only 60 whp. That's all.

If you were referring to a pro-tuned car making significantly more than 60 over stock, sure.
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