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04-12-2013, 11:17 PM | #1 |
Scooby Newbie
Member#: 176021
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2011 Impreza WRX Lighting Red |
Looking for feedback on this log
I'm posting this log on behalf of a friend. He has an 04 WRX 5-speed and he's basically stage 2 (or 3) with:
AEM CAI Tactrix EBCS VF39 STi TMIC Catless UP Catless DP Walbro 255 FP I believe 3" CBE 93 octane fuel His injectors are stock 440CC and I guess his ECU thinks they are 415CC (he said the stock map he started with showed 420CC). He is self tuning his car and is looking for something aggressive. The wideband O2 sensor is in the rear O2 sensor location. His IDCs are concerning, to say the least, but any tuners have any comments? Also, no, there isn't a good 3rd gear pull in this log. He did a 2nd gear pull into a 3rd gear so it's possible good feedback won't be possible, so if that's the case, I apologize before-hand and please say the log is incomplete/not usable for constructive feedback. Thanks. http://www.google.com/down...412_170202.csv
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Last edited by masayver; 04-13-2013 at 12:04 AM. Reason: Forgot FP and fuel type |
04-12-2013, 11:55 PM | #2 |
Scooby Specialist
Member#: 72829
Join Date: Oct 2004
Chapter/Region:
W. Canada
Location: Calgary, Canada
Vehicle:2006 WRX 2015 WRX |
He needs larger injectors and fuel pump.
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04-13-2013, 12:03 AM | #3 |
Scooby Newbie
Member#: 176021
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2011 Impreza WRX Lighting Red |
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04-15-2013, 03:14 PM | #4 |
Scooby Specialist
Member#: 321715
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Philly/SJ
Vehicle:03 Big 16G WRX PSM |
He definitely needs larger injectors, especially with the vf39. I maxed out my stock injectors with a TD04 . I'm now running 660cc injectors , running great :-)
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04-15-2013, 04:59 PM | #5 |
Scooby Newbie
Member#: 176021
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2011 Impreza WRX Lighting Red |
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04-15-2013, 05:06 PM | #6 |
Scooby Guru
Member#: 70395
Join Date: Sep 2004
Chapter/Region:
MAIC
Location: Da-boonies,Va
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He can easily use OEM Subaru injectors. JDM pinks or 06+ WRX dark blue injectors. They are in the 550-565cc range. And if your friend didn't know he needed bigger injectors he absolutely should not be tuning his car on his own. Also it's free to register at NASIOC.
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04-15-2013, 11:10 PM | #7 |
Scooby Specialist
Member#: 193412
Join Date: Nov 2008
Chapter/Region:
RMIC
Vehicle:1985 pumas. white |
AHAHA 131% Injector duty cycle!! How does the injector not catch on fire this is crazy!
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04-15-2013, 11:21 PM | #8 |
Scooby Specialist
Member#: 321715
Join Date: May 2012
Chapter/Region:
Tri-State
Location: Philly/SJ
Vehicle:03 Big 16G WRX PSM |
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04-16-2013, 09:57 PM | #9 | |
Scooby Newbie
Member#: 176021
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2011 Impreza WRX Lighting Red |
Quote:
My friend is pretty dead set on getting 565s as he doesn't aspire to make more than 280-300 whp. I think he was more curious about someone pointing out weird things other than high IDC. Thanks for the feedback, everyone. |
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04-16-2013, 11:45 PM | #10 |
Scooby Specialist
Member#: 235338
Join Date: Jan 2010
Chapter/Region:
South East
Location: Georgia
Vehicle:2002 Faggin Wagon srp |
Its running kinda rich. He can give the injectors a bit of a break by leaning it out. A vf on a 2 liter at only 17psi can be a mid 11:1 afr depending on ambient temp. 11.2 is definitely safe if he doesn't wanna go 11.4ish.
Also curious as to the timing curve on this car. I didn't see timing logged but I could've overlooked it on my fone. Steve @ Pullz-On Tuning |
04-17-2013, 02:38 AM | #11 | |
Scooby Specialist
Member#: 73884
Join Date: Nov 2004
Chapter/Region:
HIIC
Location: Honolulu
Vehicle:2016 STi Hyper Blue |
Quote:
masayver - Why doesn't your friend just post this under his own account? His IDC shows how much room you really have once you hit "100%". IDC includes latency time, but when the injectors never shut off (anything >100% IDC) there is no latency. Running >100% IDC with AFR still hitting target values is possible because of this. It does not matter if IDC is 100% or 200%, once IDC hits 100% the injectors never shut off. Now, this guy has pushed it so far that he is not even able to hit target AFR anymore in the higher RPM range. It almost looks like he has tried to run richer in the higher RPM range to try and compensate. Maybe not understanding why his AFR is too lean? Although his AFR is all over the place. It starts OK and then down to ~10, up to ~11, back down to 10, and then he hits 100% IDC and it just gets leaner as RPM's continue up. He is either unaware of the danger he is putting his engine in or he does not care. He should turn down boost to what ever value keeps IDC <100% until he gets new injectors installed. |
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04-17-2013, 02:53 AM | #12 | |
Scooby Specialist
Member#: 72829
Join Date: Oct 2004
Chapter/Region:
W. Canada
Location: Calgary, Canada
Vehicle:2006 WRX 2015 WRX |
Quote:
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04-17-2013, 05:59 AM | #13 |
Scooby Specialist
Member#: 73884
Join Date: Nov 2004
Chapter/Region:
HIIC
Location: Honolulu
Vehicle:2016 STi Hyper Blue |
I did not even bother to acknowledge the comments on running rich because they were about as outlandish as the "friends" car's tune is. I am glad to see somebody did though.
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04-17-2013, 08:26 AM | #14 | |
Scooby Specialist
Member#: 235338
Join Date: Jan 2010
Chapter/Region:
South East
Location: Georgia
Vehicle:2002 Faggin Wagon srp |
Quote:
The guy wanted other comments besides "hey- you need injectors." My comment was basically "hey- the fueling overall needs some work." lol Steve @ Pullz-On Tuning |
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04-17-2013, 06:01 PM | #15 | |
Scooby Newbie
Member#: 176021
Join Date: Mar 2008
Chapter/Region:
MWSOC
Location: Chicago, IL
Vehicle:2011 Impreza WRX Lighting Red |
Quote:
Thanks, this is the kind of feedback my friend was looking for. I've passed along the comments and the link to this thread to my friend and hopefully he'll chime in if he has questions. |
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09-13-2013, 11:04 AM | #16 |
Scooby Specialist
Member#: 118630
Join Date: Jun 2006
Chapter/Region:
South East
Vehicle:2005 Wrx wagon Red |
For 100 bucks he can send is stock injectors in to witchhunter.com to be modded for higher flows. That's the best option IMO as it would require the least amount of tuning for injector latency and tip-in enrichment and is the least expensive.
I think they end up being around 820cc's after being modded. You can mod them yourself too but they might not match up as well and you'll never know. If you buy another set of OEM stockers and send those in as well witchunter will match the set for you. |
09-13-2013, 11:24 AM | #17 |
Scooby Specialist
Member#: 235338
Join Date: Jan 2010
Chapter/Region:
South East
Location: Georgia
Vehicle:2002 Faggin Wagon srp |
The modded injectors still require a retune of both latency and tip-in....
Steve @ Pullz-on Tuning |
09-13-2013, 01:09 PM | #18 |
Scooby Specialist
Member#: 267815
Join Date: Dec 2010
Chapter/Region:
South East
Location: LSx allll done..need headers
Vehicle:Be in awe dont hate .) |
^^^A hella retune at that lol
These babies spray like a waterhose after the caps are cut off lol Nice cheap mod for the bump in flow...530 vs 830 , should be worth the money for the retune considering what your saving on injectors. Although... Witchhunters charged me around $210 i think. Welllll worth it tho, even included flow sheets for each injector. |
09-13-2013, 01:27 PM | #19 | |
Scooby Specialist
Member#: 235338
Join Date: Jan 2010
Chapter/Region:
South East
Location: Georgia
Vehicle:2002 Faggin Wagon srp |
Witchhunter only woul've charged you that if you wanted 8 injectors back. Gordon has done over a dozen sets for myself and my customers. They're not the best injectors in the world, but they're decent- especially for the money. I have them in my personal car and my dad's car as well.
Steve @ Pullz-On Tuning Quote:
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09-13-2013, 03:11 PM | #20 |
Scooby Specialist
Member#: 267815
Join Date: Dec 2010
Chapter/Region:
South East
Location: LSx allll done..need headers
Vehicle:Be in awe dont hate .) |
Nope..its was the $210 i mentioned earlier. I had em modded over 3 years ago, still have the invoice and flow sheets.(ranging from816cc to 831cc) They do em for $22 per injector NOW...id imagine the price drop reflects the fact that most folks would just opt to decapp em at home......22 bucks each is worth it JUST for the flow sheet imo.. Actually its worth $210 to me lol seeing as i already paid that lol
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09-13-2013, 06:19 PM | #21 |
Scooby Newbie
Member#: 305707
Join Date: Jan 2012
Chapter/Region:
International
Location: AUS
Vehicle:1999 WRX WRC Blue |
It's interesting that 440cc injectors with those mods are so far above 100% duty. In Aus on our pump 98 octane, 440cc generally run the vf series turbos with some headroom up to about 200kw atw around 18-20psi. That engine is hitting 130% IDC around 17psi. Why?
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