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2004 – 2007 USDM STi breakdown

2004 – 2007 USDM STi breakdown:

A Stock 2005 USDM STi
A Stock 2005 USDM STi

Rev. D (2004)

In 2004, Subaru of America announced it would sell the WRX STi. Subaru Tecnica International’s president said in an interview with Road & Track magazine that he wished to beat the Mitsubishi Lancer Evolution in the US. Thus, each iteration of the US-spec WRX STi is essentially the same as the respective J-spec STi Spec C. All part numbers matched up, including the part-numbers for the glass windows and dampeners.

However, instead of the EJ207, the USA receives the first EJ257, a 2.5 liter version of the EJ207. Unlike the EJ207, it features hypereutectic cast pistons as opposed to the forged pistons in the EJ207. The steering rack is the standard STi’s 15.2:1 instead of the Spec C’s 13:1

2004 – 2007 USDM STi breakdown:

Rev. E (2005)
As with the Japanese-spec C models, US-spec STis received additional rear fender flaring in order to allow an increase in wheel size. The wheel size went from 17″ x 7.5″ to 17″ x 8″. In accordance with the increased wheel width, steering lock-to-lock turns have been reduced. Wheel hub strength was improved. The P.C.D. was changed from 5 x 100 to 5 x 114.3. The Suretrac front LSD in the 04 model was replaced with a helical unit, the rear differential remains the same clutch type unit. Torque split is set at 35/65. In the interior, the Stereo became standard. The badging has been revised and different look was given to the steering wheel, shift knob, HVAC controls, and center console.

2004 – 2007 USDM STi breakdown:

Rev. F (2006)
The US-spec STIs receive the same face lift as the Japanese-spec STIs. Mechanically speaking, the DCCD (Driver Controlled Center Differential) and the engine mounts have been changed. Like the Japanese-spec STIs engine mounts were changed from metal to liquid-filled plastic mounts to reduce vibrations into the car’s cabin. On the largest Impreza forum, North American Subaru Impreza Owners Club (NASIOC), 2006 owners have had issues with these plastic engine mounts.

The manufacturer will replace them, under warranty, if broken, with the 2005 rubber and metal mounts. Later 2006 vehicles were equipped from the factory with 2005 mounts. The center differential is updated with the addition of a mechanical limited slip mechanism to supplement the electromagnetic DCCD. The torque split is changed to 41/59. The 2006 STI weighs approximately 3,350 lb (1,520 kg).

How to not tow a Subaru like a idiot

If there is one thing you never do with a manual all wheel drive Subaru is tow it with car dollies without removing  the drive shaft. Really the preferred way of towing a Subaru is putting the Subaru on a flatbed or a car trailer.


Kind of a bad idea.
Kind of a bad idea.


Having the Subaru towed on the two rear wheels is asking for the all wheel drive system to die a horrible death and to leave a trail of parts and tears on the road. It’s a great way to need to install if you are lucky a new center differential or if you are unlucky your transmission will need a complete replacement.


If you have to ask you can’t afford a engine swap

A simple google search would have answered this guy’s question.  LS swaps on a Subarus are known to be able to be done, but it seems like this person is more of a dreamer than a doer. Anything can be done with time, talent, and money. However, if you have to ask random people on Facebook how to do something as complex as a engine swap you might be over your head in all three areas.


STi Swap



Let me blind you with my Subaru Forester

Nothing quite like getting the attention of every cop in your city with your blue tinted headlights with your Subaru Forester.  If a cop doesn’t pull this clown over he is going to blind and piss off every motorist this clown drives by. Someone needs to tell this guy its illegal to have blue and red lights on your vehicle.  I’m sure that this Forester is a rally champion and needs all the light it can get for those dangerous night time rally stages at the Rally America events.




Oh are is that a LED light bar in his hood scoop? Talk about obnoxious.

Broken STi: Let’s drive 19 hours to look at a broken Subaru

First of all who drives eight hours one way to see a broken Subaru STi? Driving that far to buy a common car like a 2006 Subaru WRX Sti is just silly without asking for 20+ pictures. This guy probably didn’t even tell the owner how far they were traveling in the first place.Of course this gets a lot better when the seller of the car comes and posts in the thread, because the owner of the STi is even a bigger idiot. So now it is time to diagnosis this shit show.


Considering all the kid did in the buyers opinion was waste his time the buyer should consider it a lesson learned on driving half way across the country to buy a broken Subaru STi.



Of course the comments come out of the woodwork.


So it looks like the seller and buyer originally agreed upon 12.9k and then the buyer offered 10k after seeing the STi in person. The owner declined. No where does the buyer say he told the seller how far he is traveling.


Well who the fuck has a motor that has 13k into it and not decide to part out the engine? With that much money the long block must be worth some cash along with the turbo and supporting mods on the STi. Time to call bullshit on the owner. The 13k if it ever happened as probably including the cost of the installation of everything from a shop that does Subaru STi’s.



So what’s the lesson here for everyone? Don’t drive across the country to buy a STi that you know if very very broken in the first place. There is such a thing called Caveat emptor or “buyer beware” for those that don’t know Latin. If you attempt to buy from a private buyer don’t expect the car to be in the best condition no matter what the seller says.


Don’t go 19 hours to buy a car from a kid with a Monster Energy Drink flat bill hat on, because he is probably a fucking moron. 

Subaru owner gets into fights with his neighbor over his exhaust.

This guy is the reason why regular Subaru owners get dirty looks from regular people and the police.



Maybe this guy should tone down his “subie rumble!!!” when he is around his apartment complex. Nothing says douchebag Subaru owner then disturbing all your neighbors every time you leave or come home to your apartment. He’ll probably get pissed and wonder why the police start bothering him and giving him exhaust tickets. God forbid someone is sleeping from working third shift and gets woken up by this idiot. It’s all about him him him.



Nothing like telling everyone in the world that you are STI positive.


Why would anyone think it would be a good idea telling everyone in the world that you are positive for a STI.

According to Wikipedia:

Sexually transmitted infections (STI), also referred to as sexually transmitted diseases (STD) and venereal diseases (VD), are infections that are commonly spread by sex, especially vaginal intercourse, anal sex and oral sex. Most STIs initially do not cause symptoms.[1] This results in a greater risk of passing the disease on to others.[2]Symptoms and signs of disease may include vaginal discharge, penile discharge, ulcers on or around the genitals, andpelvic pain. STIs acquired before or during birth may result in poor outcomes for the baby. Some STIs may cause problems with the ability to get pregnant.[1]



STIpositive STipositive1


I’m just really embarrassed to own a Subaru Impreza WRX STi at this point. Anyone that gets the joke would think it’s dumb anyways.

How to wreck your AWD on a Subaru 101

The easiest way to destroy your differentials in your Subaru is to drive around on different sized tires. Most people recommend around 2/32 maximum tread difference between all four tires. A great way to have to replace all 3 differentials is to just 100+ miles on a tire that isn’t the same height as the rest of your tires.




This is why you carry a full spare or if you have to have a AAA membership.  I would be weary of driving 30 miles on a spare that I know is the correct size for the rest of the drives never mind 100+ miles.