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Old 04-26-2009, 11:51 AM   #1
MasterKwan
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Member#: 98961
Join Date: Oct 2005
Chapter/Region: MAIC
Location: NOVA
Vehicle:
2003 WRX
Black

Default First track day on swap.

I swapped everything from an 05 STi into my 03 WRX. Everything except the interior which didn't come with the wreck I bought. Mostly everything works

DCCD
AVCS
4 channel ABS
Door mirrors
Emissions.

What doesn't work is:

cruise control (wrong steering wheel)
Airbags (I don't really know why yet)
Intercooler sprayer (I didn't really want it).

Had my first track outing with it Friday. The difference between the stock 2.5 and my tuned 2.0 was astounding. I was running street tires. Normally the 'vette's are faster than I am. Not any more. 2 cars on track were faster, a Gallardo and a nicely setup 400 hp vette. Even then I could keep up with the vette by outbraking him in the braking zones. On the main straight, the car's 10 mphs faster (reported 140+) and on even the shortest straights, the terminal speed before braking was much faster, in some cases as much as 20 mph faster. I had to change all my braking points. The drive by wire felt perfect. I could H&T the same as if I had a cable operated throttle. It's fast enough now that I need some kind of aero, the front end is getting light at speed.



I'm very pleased with the swap. It was worth the effort to do the entire thing. Once I get it though emissions, it'll be time for some tuning. I'm taking it in Monday for emissions. It's ready. The only sticking point is the STI ECU is reporting the old car's VIN.
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Last edited by MasterKwan; 04-26-2009 at 12:01 PM.
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Old 04-26-2009, 12:16 PM   #2
Jaxx
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Join Date: Aug 1999
Chapter/Region: NWIC
Location: Boise,Idaho,USA
Vehicle:
The 93 Imp W/EJ20K
flat black

Default

can't you change the vin # in rom raider ...
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Old 04-26-2009, 02:05 PM   #3
MasterKwan
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Member#: 98961
Join Date: Oct 2005
Chapter/Region: MAIC
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2003 WRX
Black

Default

It's apparently in an area of the CPU that can't be changed with a reflash. I will check again though.
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Old 04-26-2009, 02:53 PM   #4
TDagen
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Join Date: Nov 2007
Chapter/Region: MWSOC
Location: Minnesota, mpls
Vehicle:
2002 Wrx,5.3L,S476r
FNF LSX Swap,E85 and more

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Holy**** that sounds like so much fun masterkwan, Not many people could get you with the added torque ect the 2.5 puts out huh? Nice!!! How was it swaping the ecu over ect? Nice work!!
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Old 04-26-2009, 04:16 PM   #5
MasterKwan
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2003 WRX
Black

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I swapped every wiring harness over, fuel tank, even the door harnesses. It was a fun wintertime project. It wasn't hard but, it was a little tedious. You run into things you don't think you have to swap, like the wiper motor but, sure enough, the wiring is different inside the motor so, you have to use the STI wiper motor. That's car's basically an 05 STI inside an 03 shell. It all bolts together but, there's always something Subaru did to make it more painful.

I was amazed by the torque. I was hauling down V8's on the straights. You could feel the DCCD switching power back and forth in the corners. The fun part is I've run with these people before and most of them were used to getting away from me on the straights. Not any more.

Going back out next Friday. This time with new wheels and tires.
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Old 05-02-2009, 01:17 AM   #6
atreimer
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Post some pictures at the track...
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Old 05-04-2009, 12:06 PM   #7
Storm
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Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

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I wonder why the VIN would have any effect on the emissions? I know it shouldn't....but OBDII and later systems have opened the door pretty wide.

The immobilizer is the only reason I can see the ECU needing to report any VIN numbers.

Kwan....sounds like quite the beast!!!! Must see video now with the above descriptions!!!


Jay
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Old 05-04-2009, 12:24 PM   #8
MasterKwan
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Join Date: Oct 2005
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2003 WRX
Black

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It turned out to be a non-issue. Virginia isn't smart enough to find emissions cheats. The reason you have a VIN in the ECU is simple, when you go to get emissions, someone could test a stock car and enter your vehicle VIN so, you pass emissions even though your car was never tested. If they required the VIN of the ECU to match the VIN of the chassis, you couldn't cheat this way. I made an assumption based on a mechanic's comment that it would be an issue. Inspector dude then told me "I just punch in the VIN".

I don't take pictures or movies of my track days. I suppose I could get a camera for it. I have a hard enough time hiding my laptop so, I can log my runs without dicking with a camera. The swap is showing 99% injector duty cycle on the track. I know it's not really that high but, it's a sign I need to think about bigger injectors before I do any tuning.
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Old 05-04-2009, 03:15 PM   #9
MasterKwan
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2003 WRX
Black

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I spoke too soon. State DEQ just called me and asked why my engine VIN and Chassis Vin don't match. I told the I'd swapped motors from an 05 into an 03. I'm legal since I went from newer to older.
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Old 05-04-2009, 03:27 PM   #10
Storm
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Location: SAUL'S Motorsports
Vehicle:
96L Most Over-
Developed Beater

Default

Glad it worked out for you....but it sucks to have yet another meaningless issue to worry about just for a passing mark on your registration.

Topic for another discussion, I guess.....

Jay
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Old 05-04-2009, 04:07 PM   #11
AndrewFD3
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Location: Phoenix AZ
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2003 wrx built ej207
Rally blue

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Cool it worked out for you.
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Old 05-04-2009, 06:42 PM   #12
Kimbei1950
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Location: Portland, Oregon!
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sick, post some pics of your car!
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