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Old 06-16-2009, 05:19 AM   #76
slovak
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Member#: 168922
Join Date: Jan 2008
Chapter/Region: MWSOC
Location: Chi-town
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07 STi
Obidissian Black

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ok I read just about everything unless I might of missed it, 5 hours on a computer can do this. My question is, what can I usse to tune my vehicle in an emission state that wont fail me. here is what I have,
07 STi
272 BC cams
Manley Pistons 20 over
Manley H beam rods
BC dual springs
Mild port n polish

and I am adding fuel rails and injectors.

Thing is that I was considiring and AEM but heard that I wont pass emission, but I jusst want to be able to controll the engine as best as possible. After looking at the option by reading this thread over and over, sounds like COBB or UTEC seem to be my best options.

Any help would be appreciated.
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Old 07-25-2009, 02:55 AM   #77
jay_parot
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1996 STI V3 JDM
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i have a crazy problem , my car was not turbo i put in a haltech ECU and a WRX TURBO engine, but when we tune the car it just wont go over 4.800 Rpm !!! its like it running out of spark or gas just backs fire or some like it wide band shows too rich or too poor rise gas and lowered and same thing , and i have $ WRX STI coils and 255 fuel pump check everything cant find the problem .... i try with another ECU same model same problem WTF !!!

any sugestions ??
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Old 08-28-2009, 10:09 PM   #78
msspag
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Chapter/Region: NWIC
Location: Grants Pass,Or.
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Rally Blue

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Thanks for the tuning info. I think I am going to start with a TBE and a access port plug and play first. Then maybe a custom tune later.
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Old 08-30-2009, 01:37 AM   #79
Smoke
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Location: Cheney, WA
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95 V4 STi-RA swap
Stage 49.8

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I want to get a Version 3 STi swap and want someone to tune it.

What would I need?
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Old 09-14-2009, 06:48 PM   #80
AcesFull04
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I'm debating on buying a 2006 WRX (non-STi) and the dealer says the check engine light is on because the previous owner installed a full exhaust system. They don't believe he ever got it tuned. How bad is that for the car? Should I not buy it?
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Old 10-02-2009, 09:53 PM   #81
paulagomez
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My car was having problems and the engine started making noise. We think it's the rods in the engine. How do i check the engine rods? Preferably without having to pull the whole engine out. Are there any shops near Riverside, CA, that do work on Subaru's and aren't overpriced?
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Old 11-11-2009, 10:16 PM   #82
dbeltran72
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2007 STi
Black

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Unabomber,

I own a 2007 STi. apparently had a mod in the ECU from the previous owner that caused my car to run lean and eventually crack a piston and score the cilinder/block. At this point I am in the process of getting a brand new OEM complete short block. A subaru dealership wanted over $10K to fix the car. It will cost me $3.5K in total in a shop a trust. Story short, I was told that I have to buy a new ECU (subaru dealer "A" and dealer "B" told me that they should be able to re-flash and reset the ECU to its stock software settings. Is this possible? which one is true?
Also, my car has only an air intake (Injen) after market, will this cause my car to run lean and eventually crack a piston again?
I very much thank you for your time and guidance.
Kind regards,
Diego
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Old 11-18-2009, 09:39 PM   #83
Richbmxer87
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im doin a jdm 2.0 sti swap with ecu, im adding a 16, or 20g turbo and mods to support the turbo but what EMS should i get that will work with my JDM swap.
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Old 02-18-2010, 11:51 PM   #84
joesinhawaii
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1965 beetle
black and silver

Default megasquirt ecu's

i just successfully installed a ms2 ecu into a vw vanagon with a 96 legacy jdm core and ordered my innovative lc1 to tune it with if you want a low price alternative to a high priced ecu and you can read a meter, this is a geeks dream come true?
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Old 04-17-2010, 10:06 AM   #85
kelford 272
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Hello there every one

I am planning to go for haltech ECU stand alone for the subaru i own with an EJ20 evcs version 6-9 with the following specs:
272 cams 11.3 lift
springs and retainers
stock size valves
2.2 stroker kit with hbeam connect rods
unequal length headers
intake manifold magen racing
RAM air intake
HKS s-type intercooler system
exhaust system

what do u think it is better to recommend haltech or should i go for AEM ???? i am lost because people gave me deferent openions about this issue so pleas help by posting urs guys...

Thanks
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Old 05-03-2010, 06:09 PM   #86
wessubie06
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Location: St. Johns county
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2006 sti
crystal gray metallic

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I have an 06 sti with a catback exhaust. I was looking to put a cat delete downpipe on but after reading this i am unsure if i should get tuning or is the sti ecu good with a turboback without ecu management modification?
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Old 05-16-2010, 03:22 PM   #87
Boxer4turbo2004
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out of all the way to tune..I am installing gt35r and I wanna know the best way to tune to get it perfect..which route is best..hydra, cobb, aem stand alone?
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Old 07-08-2010, 02:32 AM   #88
Willdawg16
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Location: Olympia, Wa
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2006 Impreza WRX
White

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It seems like having someone tune your vehicle specifically to fit your desire/needs is the way to go. I'm looking for more of a option with my ECU. My friend has a Piggyback style ECU that has a digital input device attached to it that will let him "on the fly" change his mapping for gas mileage, horse power, top end etc....

Can anyone suggest something like that for a 06 wrx for me? The nearest proffessional tuner is a hour away and I'm looking to save gas until the weekends then have fun with more pony's. Thanks!
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Old 07-22-2010, 08:47 PM   #89
reyrey
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I have A 06 WRX Non STI will this Engine Management work on my car Haltech Sport 2000 P&P ECU for 01-05 Subaru Impreza Wrx?

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Old 10-12-2010, 09:55 PM   #90
Larrygu3
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2008 WRX
Silver

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I'm looking to do a turbo upgrade on my 08 wrx, i'm looking at the vf52 or the vf48. I understand that i will need to have some kind of tuning done for the new turbo to function correctly. I am in Tempe AZ and I have been in contact with Vivid Racing who does custom tuning. Does anyone have experience with this type of turbo swap? Mainly the VF48. I was told by Vivid that I would need to get new injectors and a new fuel pump.
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Old 12-03-2010, 11:15 AM   #91
Scargod
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Location: S central CT, New England
Vehicle:
2008 STI hatch
silver

Default Unabomber: Update for this FAQ? Other threads?

"Can the dealer detect my reflashed ECU (AccessPort/EcuTek/Open Source)?

YES the checksum of the ECU changes.
YES the dealer can easily read the checksum.

NO the dealer has nothing to compare the checksum against there are many revisions of the WRX ecu they all have different checksums. If the dealer had someway of putting this checksum into a database he COULD verify that the code had been modified but at this time he doesn't.

The 05+ ECU and some of the 04s have the VIN in the ECU code. The current versions of reflashed ECUs only change the tables so the VIN will report when queried.

Bottom line: If you don't want modifications to be detected, don't modify the car."


Any changes in this statement since 2005?

With a 2011 STI, I want to know whether an AccessPORT re-flash to the stock map (and a checksum change), will be detected by a dealership and is it likely to be noted and possibly affect my warranty at some point in the future? FYI, I have not changed the stock mapping yet and I need to take it in for the (first), 2-3K checkup. So my question about any revised knowledge/information about checksum changes relates to whether I wait or go ahead with a Stage 1 and re-flash to stock before I take it in...
My interpretation would be that if you go back to the original, factory map then "nothing will be changed" except the checksum number. It seems they will not know who flashed it or when... and changes that are no longer there cannot be detected. Can the checksum number changing get someone in trouble?? Because they "can" read it, does it mean they do or think anything of it? Could the manufacturer or dealership perform a re-flash update before cars are shipped or delivered? As far as Subaru, is all this re-flashing tracked and details kept of why they were done and specifically by who?
If the answer is yes, you could be caught and punished anytime after you do your own re-flash, then I might be tempted to proceed with Stage 1.
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Old 12-07-2010, 08:36 AM   #92
wayward167
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SWP

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^^^^this?
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Old 12-10-2010, 09:19 AM   #93
hun1er
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2004 WRX

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what and when happened to wrxhackers.com that is mentioned in start of the thread?

here is lot a good info, just interestig what happened or did they change title or something?
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Old 12-26-2010, 01:13 AM   #94
firesword777
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13 WRX
DGM

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I thought I remembered reading somewhere around here that tuning pre-00 or so cars just can't be done or something to that effect and can't seem to find it again or why it would be so?
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Old 12-26-2010, 02:48 PM   #95
Scargod
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Location: S central CT, New England
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2008 STI hatch
silver

Default You can tune a piano but you can't tune a fish!

WTF Even if you read that I wouldn't believe all I read. An engine that can't be tuned??lol
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Old 12-30-2010, 03:53 AM   #96
firesword777
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13 WRX
DGM

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Perhaps it was something about a tactrix cable or something of that nature that wouldn't read the ECU. I really don't remember.
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Old 12-30-2010, 03:50 PM   #97
2006-2.5UK
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Great post. Learning a lot. Glad it is shared!!
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Old 01-10-2011, 08:25 AM   #98
Sk8er
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I am glad you mentioned the Hydra it is a great system. It has the the best knock control and has bigger maps in order to detect finer changes
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Old 02-04-2011, 05:21 PM   #99
suberglue8
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i have a 95 0bd I ej20g sti full 20g wired swapped impreza l bottom end just spun a bearing so i got a 2.5 ej257 shortblock. i dont know what engine managment i will need to tune it proper. should i get power fc, greddy emanage, vi-pec, is there a way to fully swap in obdII wrx ecu and wiring to open up more tunning options? ive also herd ppl wire in obd II hook ups to tune with a lap top but can the stock ecu even manage to tune this hybrid?
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Old 02-04-2011, 10:37 PM   #100
Elemento1991
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Midnight Blue

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My brain... It hurts, so much information
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