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08-26-2013, 03:32 AM | #51 | |
Scooby Specialist
Member#: 220153
Join Date: Aug 2009
Location: PRC/UK
Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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08-26-2013, 03:35 AM | #52 | |
Scooby Specialist
Member#: 220153
Join Date: Aug 2009
Location: PRC/UK
Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
Quote:
My mate got some decent E85 lately, i might tune my scooby again, lol but i need bigger injectors to feed up my bxxch, haha |
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08-26-2013, 10:36 PM | #53 |
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Join Date: Dec 2006
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VIC
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Vehicle:'07 SWP STi Instagram | arthurlam89 |
I think that's the biggest air filter i have ever seen put on a subaru
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08-26-2013, 11:35 PM | #54 |
Scooby Specialist
Member#: 220153
Join Date: Aug 2009
Location: PRC/UK
Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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08-27-2013, 11:48 PM | #55 | |
Scooby Specialist
Member#: 178426
Join Date: Apr 2008
Location: FoCo
Vehicle:2010 S4 Gray |
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Hell, the dom 3xtr is hitting 500whp with E85. An extra 6lb/min (60chp) should at least be able to hit that with 100% meth. I'm not dissing the car, I'm saying there is something wrong. The 2.1L doesn't affect power either. It will affect spool, but not power. Especially if you rev it out, which I'm not sure why you aren't. I'm all for conservative, but if you were going to go for conservative you could run a smaller turbo and get better spool, transient response, and the same power. Also, I used my dom 3xtr on a 2.0. Ran it out to 8k redline. Super smoth. Spool was slightly better than yours. I was hitting 400whp ish and the timing belt had skipped. You should be pushing some serious power with that turbo but your not even close to what most experienced people would expect. Something is up. |
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08-28-2013, 09:37 AM | #56 |
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Member#: 269226
Join Date: Jan 2011
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Yeah, it's called fuel quality. You do realize this guy is in China right? Even here in the US, there's a ton of variation in fuel quality between different states. From what I've been told by a number of tuners, they can make the same power on 89 octane gas from Oregon as 91 oct from Cali.
Even US fuel quality has been playing catchup to the fuel used in Europe and Japan for a while now. |
08-28-2013, 09:04 PM | #57 | |
Scooby Specialist
Member#: 220153
Join Date: Aug 2009
Location: PRC/UK
Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
Quote:
1 year ago, all the petrol stations supply Ron 97 or 98 fuel (US 91-92 maybe?) in my city which are called best fuel in my country. I do test both fuels on dyno. There are pretty identical outputs comparing with JDM 2.0 STI and USDM 2.5 STI apart from I need to do slighly tune on ignition timing and afr. For mild tune USDM 2.5 STI, I can easily make just over 300whp/300wtq power output with some supporting mods which is pretty much similar with US standard. But that was OLD days. This year on, centre gov starts to reduce sulphur in the petrol (octane goes down) to solve environmental issue. well I think this is good move to deal with high pollution issue in my city but we all sacrifice our performance. So all the dealerships begin to recall their cars for reprogramme the ECU, well let say its Detune. We test BMW Z4 i35 on the dyno before and after. With old 97, it does 300whp but with new 95, it only does 260whp. That proves everything. Now your all could understand what I mentioned earlier in this thread. To rexblake: thanks for all useful infomation you left for me in the thread and i do learn a lot. you are experienced and knowledgebale player but please understand the situation in my area. I will improve my tuning skill and hopefully power curve would be better later on. To 555: Thanks buddy for backing me up. seems like you know a lot about my country. To spdracerut: Thanks for understanding. Hummel |
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08-29-2013, 09:54 AM | #58 | |
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08-29-2013, 12:47 PM | #59 |
Scooby Guru
Member#: 56203
Join Date: Feb 2004
Chapter/Region:
Tri-State
Location: south nj
Vehicle:00 RSTI Coupe Twin Scroll 2.5XTR EJ207 |
Are you happy with your switch from 1.5xtr to this? Did that setup spool very poorly also? Numbers aside the curve has me scratching my head considering you run a stroker and AVCS.
I run a stock V8 long block on 93oct with TS 2.5xtr and see full boost a 1k rpms sooner and in 3rd gear vs your 4th gear log. I understand (now) that your gas sucks but have you tried to run more timing? Have you pressure tested the system? Last edited by Paul; 08-29-2013 at 12:57 PM. |
09-01-2013, 09:31 PM | #60 | |
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Join Date: Aug 2009
Location: PRC/UK
Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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and also i try to add my ignition timing but from the noise of knock earphone, i can tell its knock everywhere. so, um, i have no choice to reduce to the range of 14-17 degrees. well i think why i get my full boost that late is all down to engine displacement, long upper pipe, 4 inch inlet housing and .82 hotside. i will keep this setup for a while, then i might go for a new twin scroll setup. im happy about my new build comparing to my old 1.5xtr coz its obviously i have more power and torque this time. considering 5200 rpm full boost with 7800 rpm redline, let say this powerband is pretty enough for me. p.s. you are running TS 2.5xtr, i cant find this turbo. any spec of that one there? Hummel Last edited by hummelsubaru; 09-07-2013 at 10:51 AM. |
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09-01-2013, 09:32 PM | #61 |
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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09-02-2013, 12:28 AM | #62 |
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Vehicle:2007 USDM STI Satin White Pearl |
I really think it's back down to the piston design, MPS had a big problem with early knock and couldn't add timing to get the spool up, they designed a piston that helped with it, and used a more recessed spark plug (pardon my poor technical term)
Morocco88 - 04' WRX into a 97' lot with 2.1 stroker and DOM 2.5 If you haven't read it already, give it a quick skim through and it might shed some light on some issues your getting? Hope that helps |
09-02-2013, 01:10 AM | #63 | |
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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Hummel |
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09-02-2013, 10:31 AM | #64 |
Scooby Guru
Member#: 56203
Join Date: Feb 2004
Chapter/Region:
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Location: south nj
Vehicle:00 RSTI Coupe Twin Scroll 2.5XTR EJ207 |
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09-02-2013, 08:52 PM | #65 | |
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Member#: 220153
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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4500rpm seems pretty quick spool up Cheers |
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09-03-2013, 06:59 AM | #66 |
Scooby Guru
Member#: 56203
Join Date: Feb 2004
Chapter/Region:
Tri-State
Location: south nj
Vehicle:00 RSTI Coupe Twin Scroll 2.5XTR EJ207 |
yes blouch dom 2.5xtr with a 10cm TS hotside.
Im seeing 20psi in 3rd right around 4500 |
09-07-2013, 11:36 AM | #67 |
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
Here is a little upgrad. Chart from real road log this afternoon
This is log file, 4th gear, sunny day, warm, 24.3psi@4898 rpm, tappered down to 23.6psi. the reason why i just revved to 6700 rpm is traffic in front. http://zh.scribd.com/doc/166280991/Tutu24psi-4th-Road But there is another problem occured during the road log, afr is more leaner than last time on dyno. it was 10.7-11 afr but today is 11.4-12. i check meth injection system but seems its alright and does work. not sure about nozzle so i will go check it later and make sure nozzle is okay. anyone here suffers similar problems? comments will be appreciated. Thanks Hummel |
09-07-2013, 11:48 AM | #68 |
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Beautiful car and awesome setup
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09-07-2013, 12:38 PM | #69 | |
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Member#: 163648
Join Date: Nov 2007
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MWSOC
Location: Xona 78•64 UHF
Vehicle:2002 WRX V9 6mt R180 Brembos |
Quote:
Has it gotten colder since your tune? |
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09-07-2013, 04:09 PM | #70 |
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Vehicle:2015 STi LE EFR7163 500whp/550wtq |
Just to clear up some misinformation in this thread, but the gtx3076r is rated at 65lb/min turbo, not 60 or 61 being referenced.
I went from a 1.5xtr to gtx3076r (on 2.5L), and it was a pretty substantial difference in power and streetability. I didn't lose much low end spool if you ask me, but TONS of extra power. If you're not hitting 20psi by 4000rpm then something sounds weird...I understand you're on a 2.2L and .82ar hotside (why?) though... Graphs below compared my setups on E85. 1.5xtr around 26psi and gtx was around 28-29psi. I know you can't compare apples to oranges here (2.2 vs 2.5L), but...I would expect your setup to hit more than 8psi by 4000rpm. |
09-08-2013, 09:03 PM | #71 | |||||
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
Thanks man!
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is that airboy simulated dyno there? Thanks anywayz Hummel |
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09-08-2013, 09:07 PM | #72 |
Scooby Specialist
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Join Date: Nov 2007
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MWSOC
Location: Xona 78•64 UHF
Vehicle:2002 WRX V9 6mt R180 Brembos |
Yeah I was talking summer to winter type of a change- 80f down to 40f or something.
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09-08-2013, 09:42 PM | #73 |
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Member#: 220153
Join Date: Aug 2009
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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09-08-2013, 10:51 PM | #74 |
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Member#: 163648
Join Date: Nov 2007
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MWSOC
Location: Xona 78•64 UHF
Vehicle:2002 WRX V9 6mt R180 Brembos |
We have already had a few 40 degree nights in MN so I figured I would ask. We have 97f for a high tomorrow and 45f for a low on Thursday. That's Minnesota.
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09-09-2013, 01:07 AM | #75 |
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Vehicle:'05 WRX JBP WFC#207 GTX3076 ViPec V44 |
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