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Old 08-09-2013, 03:24 AM   #26
907Bum
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Simple I know but have you pressure tested your entire intake system? That and or possibly a non-sealing wastegate could help slow your boost. Does your car have AVCS, if not this will also slow your spool. Your 76 with the .82 hot side should be spooling around 1000 rpms sooner. It looks like a graph from a 3582 1.06 sized turbo without avcs. And it looks like octane is in order for your build .
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Old 08-09-2013, 04:58 AM   #27
hummelsubaru
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Quote:
Originally Posted by 907Bum View Post
Simple I know but have you pressure tested your entire intake system? That and or possibly a non-sealing wastegate could help slow your boost. Does your car have AVCS, if not this will also slow your spool. Your 76 with the .82 hot side should be spooling around 1000 rpms sooner. It looks like a graph from a 3582 1.06 sized turbo without avcs. And it looks like octane is in order for your build .
I will go check system leaking this weekend to make sure everything is well sealed. its a little bit leaking from turbo hotside to downpipe v band flange but its sorted now and i know that wont affect spool up.

I did have avc-s and it helps a lot during spool up. but im suspecting 2.1L with .82 gtx3076, it will be slow spool up, is that correct? or might be i have too long up pipe, will that affect spool up? or i have too much timing during the spool up?

Thanks anyway matey!
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Old 08-09-2013, 09:51 AM   #28
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Quote:
Originally Posted by hummelsubaru View Post
I will go check system leaking this weekend to make sure everything is well sealed. its a little bit leaking from turbo hotside to downpipe v band flange but its sorted now and i know that wont affect spool up.

I did have avc-s and it helps a lot during spool up. but im suspecting 2.1L with .82 gtx3076, it will be slow spool up, is that correct? or might be i have too long up pipe, will that affect spool up? or i have too much timing during the spool up?

Thanks anyway matey!
right, check the system leaking,especially welding parties.
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Old 08-09-2013, 10:17 AM   #29
StIGC11
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10.8 AFR on spool up is pretty rich you should be in the 13.xx range.
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Old 08-10-2013, 07:32 PM   #30
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It would be nice to see some logs of your boost, timing, and afr. It does seem slow to spool up, and it's not holding power up top.
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Old 08-11-2013, 11:24 PM   #31
hummelsubaru
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Found a clue from Overboosting04, hope you dont mind at all.
here is the link
http://forums.nasioc.com/forums/show...2506075&page=3

we have similar engine setup. but both car are running huge differences in power wise and i believe thats all down to fuel. one is the most ****ty fuel in this planet and the other is e85.

But on the 3rd page of overboosting04's thread, i spot he hits peak torque @6194rpm which is pretty much identical to mine. i know he's running 25psi which is higher. But my boy on the real street, it hits peak torque @ 5000-5100 rpm, which is 800rpm different from dyno reading.

actually im in hard time to do research on those ej207+gtx3076r because this kind of setup is not really popular in North America. so in this case, could anyone here help me out. i'd like to see more dyno printouts and learn the experiences.

p.s. i will try meth next week, maybe e85, lets see whats gonna come out right after.
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Old 08-12-2013, 03:05 AM   #32
Scuby04STi
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You won't find many. There isn't mut on the GTX turbos as it is.

I hope fuel does it. Be waiting to see how it works out.
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Old 08-13-2013, 09:16 PM   #33
hummelsubaru
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Here it comes logs

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Old 08-13-2013, 09:38 PM   #34
StIGC11
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What gear is this in?
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Old 08-14-2013, 12:29 AM   #35
hummelsubaru
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Quote:
Originally Posted by StIGC11 View Post
What gear is this in?
4th gear
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Old 08-14-2013, 12:30 AM   #36
hummelsubaru
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http://zh.scribd.com/doc/160134818/log1

here is my 4th gear datalog during the dyno tune

i know the timing during the spool up and afr need to be retuned
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Old 08-14-2013, 02:37 AM   #37
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Maybe its just me (im running a 2.5l) but I run around 30* of timing up until about 4psi and then taper down slowely from there. Your AFR looks about right you have some dips here and there. Other than that idk what else to say. Make sure there are no boost leaks / header / upipe is wrapped and or high heat coated will help.
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Old 08-15-2013, 04:50 AM   #38
SashaSasha
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OMG,
best widebody kit ever!
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Old 08-16-2013, 01:38 PM   #39
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Quote:
Originally Posted by SashaSasha View Post
OMG,
best widebody kit ever!
I was waiting for someone else to notice how sexy this car is! If you run meth please use some sort of failsafe. For some reason the idea of meth used as fuel scares me. Have you thought of running a secondary injection setup, like a spare tank filled with E85 set to kick in above a certain psi controlled by a standalone. Weld in secondary injector bungs and run some lines. Shouldnt be that bad and will save you from having a ****ed motor

Last edited by Purpose_Built; 08-16-2013 at 01:51 PM.
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Old 08-16-2013, 01:43 PM   #40
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You are running like 13-14 degrees of timing at redline. This is exceedingly low.
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Old 08-16-2013, 04:01 PM   #41
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Quote:
Originally Posted by KingPest View Post
You are running like 13-14 degrees of timing at redline. This is exceedingly low.
Yup that may cause him problems because if he is running that at peak hp then it must be crazy low at peak tq
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Old 08-18-2013, 07:01 PM   #42
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Nice Car it looks great. I used to live in the uk and ran meth there and it made a huge differance. I've been running it for about 9 years and it will really help you out there. Just make sure you get some failsaifs like aquamist uses.
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Old 08-19-2013, 01:18 AM   #43
hummelsubaru
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Quote:
Originally Posted by StIGC11 View Post
Maybe its just me (im running a 2.5l) but I run around 30* of timing up until about 4psi and then taper down slowely from there. Your AFR looks about right you have some dips here and there. Other than that idk what else to say. Make sure there are no boost leaks / header / upipe is wrapped and or high heat coated will help.
Quote:
Originally Posted by SashaSasha View Post
OMG,
best widebody kit ever!
Quote:
Originally Posted by Purpose_Built View Post
I was waiting for someone else to notice how sexy this car is! If you run meth please use some sort of failsafe. For some reason the idea of meth used as fuel scares me. Have you thought of running a secondary injection setup, like a spare tank filled with E85 set to kick in above a certain psi controlled by a standalone. Weld in secondary injector bungs and run some lines. Shouldnt be that bad and will save you from having a ****ed motor
Quote:
Originally Posted by KingPest View Post
You are running like 13-14 degrees of timing at redline. This is exceedingly low.
Quote:
Originally Posted by Purpose_Built View Post
Yup that may cause him problems because if he is running that at peak hp then it must be crazy low at peak tq
Quote:
Originally Posted by stu View Post
Nice Car it looks great. I used to live in the uk and ran meth there and it made a huge differance. I've been running it for about 9 years and it will really help you out there. Just make sure you get some failsaifs like aquamist uses.
Thanks guys and idea is been taken.

I fit the Aquamist HFS6 meth injection on saturday. and will do dyno tune next week. lets see what comes out.
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Old 08-21-2013, 05:38 AM   #44
555
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Cool car!
People here loves such dyno queens. For a 60 lb/min turbo @ 22 psi 377 whp is not that bad. It is equal to 460-470 crank hp. It is low but acceptable with 14 deg. timing and 95 ron fuel. Don't confuse with people claims that they are producing 500 whp with 1.5xtr or 18G turbo. Its an American dream.

You may spot on spool. It should spool around 4500 rpm without and 4000 with AVCS. Spool is where you achieve 1 bar of boost. It is not full boost. You may expect full boost 300-400 rpm later on that.

You have a high injector duty cycle there for a petrol based fuel so you may be looking for new fuel pump like Walbro 450. Your injectors will fail to feed that turbo if you switch to alcohol based fuels. So be worth checking new a set of 1300 or 2000cc if your aim is to achieve 530-540+ whp.(most out of your turbo)

You would struggle to get more power from a GTX3076R with that fuel. If you are in PRC why not use M85 instead of 95 RON! You will get most out of it.

Last edited by 555; 08-21-2013 at 05:43 AM.
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Old 08-24-2013, 01:03 AM   #45
hummelsubaru
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Quote:
Originally Posted by 555 View Post
Cool car!
People here loves such dyno queens. For a 60 lb/min turbo @ 22 psi 377 whp is not that bad. It is equal to 460-470 crank hp. It is low but acceptable with 14 deg. timing and 95 ron fuel. Don't confuse with people claims that they are producing 500 whp with 1.5xtr or 18G turbo. Its an American dream.

You may spot on spool. It should spool around 4500 rpm without and 4000 with AVCS. Spool is where you achieve 1 bar of boost. It is not full boost. You may expect full boost 300-400 rpm later on that.

You have a high injector duty cycle there for a petrol based fuel so you may be looking for new fuel pump like Walbro 450. Your injectors will fail to feed that turbo if you switch to alcohol based fuels. So be worth checking new a set of 1300 or 2000cc if your aim is to achieve 530-540+ whp.(most out of your turbo)

You would struggle to get more power from a GTX3076R with that fuel. If you are in PRC why not use M85 instead of 95 RON! You will get most out of it.

Thanks for such detailed lessen for me, mate!

Before we start to talk about that, let me clarify something first.
Im in mainland PRC and stay in major cities mostly. In the city, there are no such ethanol fuel supplying, they are 95 only. If you want some ethanol, you have to go to the countries, but most of petrol stations supply like E15 or E20.

Im not really moaning about 22psi with 375whp output coz i know it was pouring day, high humidity, while high temp with low quality fuel in low reading dyno. There is no leaking of whole system after carefully checked. There is a funny story from my american friend. A bunch of owners they call them Dyno queen which means they mod their cars just for dyno and then return back to garages and they keep doing that. And these people do influence a lot for the users here. So from that aspect, Im pretty happy and satisfied with my scooby.

And back to topic, I did dyno tune yesterday with Aquamist HFS6 meth injection on. Let say its fairly good result. Eventually, my scooby does 419whp@5400 ish, 390wtq@6200 ish. Here are newly adjustments:
Facility: ABL Beijing PRC
Weather: 100 F
Humidity: less then 15% (sunny and roasted day)
Tuner: Lusang
Dyno info: Dyno Cosber
Baseline for dyno: 210whp 2.5 STI
Gear: 4th
Target Boost: 24 psi
Target AFR: 11 after injection
Ignition timing: 12-17 degree
Fuel: Local Ron 95
ECU: ViPec V44 PnP, ViPec IAT, Knock Interface
Meth Injection: Aquamist HFS6 with 100% ethanol, 1mm jet with 0.9mm restrictors

The reason why I use ethanol instead of methanol, meth is restricted chemical so you need approval letter to get that, second reason is safty issue.

Right, good result so I took my scooby for a spin. the road is only 300 metres length, I just did 0-100 kmph test with 275/35/18 SP1 tyres. D box shows 0-60kmph is 1.9 sec (its quick) and 60-100kmph i made a mistake so the time is 4.3 secs. If i can get into 2nd gear properly at that time, the time would be like 3.7-3.8 secs.

Okay, Thanks guys for your useful information for my dyno tune.

Hummel
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Old 08-24-2013, 11:14 AM   #46
Scuby04STi
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Glad to hear the adjustment you made helped, did it hold power up top better?

Also what fenders are those? I gotta know lol
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Old 08-25-2013, 02:12 AM   #47
rexblake
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Quote:
Originally Posted by 555 View Post
Cool car!
People here loves such dyno queens. For a 60 lb/min turbo @ 22 psi 377 whp is not that bad. It is equal to 460-470 crank hp. It is low but acceptable with 14 deg. timing and 95 ron fuel. Don't confuse with people claims that they are producing 500 whp with 1.5xtr or 18G turbo. Its an American dream.

You may spot on spool. It should spool around 4500 rpm without and 4000 with AVCS. Spool is where you achieve 1 bar of boost. It is not full boost. You may expect full boost 300-400 rpm later on that.

You have a high injector duty cycle there for a petrol based fuel so you may be looking for new fuel pump like Walbro 450. Your injectors will fail to feed that turbo if you switch to alcohol based fuels. So be worth checking new a set of 1300 or 2000cc if your aim is to achieve 530-540+ whp.(most out of your turbo)

You would struggle to get more power from a GTX3076R with that fuel. If you are in PRC why not use M85 instead of 95 RON! You will get most out of it.
377whp on 22psi out of a 60lb/min turbo is terrible. Unbelievably bad actually. I hit 350whp on 91 octane with a 55lb/min (Dom 3xtr) at 16psi. Turbo wasn't even trying. Nor should a 60lb/min one be. There's something holding the car back and it isn't the turbo (unless the turbo is ****ed). This turbo should hit close to 400whp with low boost (under 20psi) without trying, even on pump gas.
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Old 08-25-2013, 03:19 AM   #48
907Bum
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Booze fueled :)

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It should be around 400 whp on 91, on a non-corrected mustang dyno. Buy some more dyno time and start playing around with the tune .
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Old 08-25-2013, 07:11 PM   #49
555
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555

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Quote:
Originally Posted by rexblake View Post
377whp on 22psi out of a 60lb/min turbo is terrible. Unbelievably bad actually. I hit 350whp on 91 octane with a 55lb/min (Dom 3xtr) at 16psi. Turbo wasn't even trying. Nor should a 60lb/min one be. There's something holding the car back and it isn't the turbo (unless the turbo is ****ed). This turbo should hit close to 400whp with low boost (under 20psi) without trying, even on pump gas.
What is unbelievable ? GTX3076 vs. DOM3 have the similar compressor and turbine wheel sizes.(76/60) You hit 350 at 16 psi and this car hits 419 at 24 psi with low ignition. Do you think you have TD04 installed on your car? What should be the power difference?

30 psi of boost / 6-7 deg more timing / 11.8-12 afr / high octane fuel should get this car to 500 whp and it is the maximum limit of this turbo.
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Old 08-26-2013, 03:30 AM   #50
hummelsubaru
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Quote:
Originally Posted by Scuby04STi View Post
Glad to hear the adjustment you made helped, did it hold power up top better?

Also what fenders are those? I gotta know lol
Thanks buddy!

my fender is Cusco Tomei Voltex TA kit
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