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2020! too soon?
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Old 12-11-18, 02:50 PM   #11
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2020 Subaru Wrx Rumors - Car HD 2019
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Old 12-11-18, 02:51 PM   #12
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Old 12-18-18, 08:13 AM   #13
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I'm glad I picked up a non-DI STI before they go DI.

Direct Injection (although good at making power) suffer from all kinds of carbon related issues. Carbon on valves is at the top of that list. I still prefer port injection over direct injection as the fuel helps to keep the valves cleaner.

More importantly though, I hope they put some forged parts in the new motor...probably won't because of the expansion properties of forged components against stricter emissions.
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Old 12-18-18, 08:31 AM   #14
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is it me or is the front end looking similar to a mustang?
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Old 12-18-18, 08:37 AM   #15
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Default Re: 2020! too soon?

Quote:
Originally Posted by xX_STI_Xx View Post
I'm glad I picked up a non-DI STI before they go DI.

Direct Injection (although good at making power) suffer from all kinds of carbon related issues. Carbon on valves is at the top of that list. I still prefer port injection over direct injection as the fuel helps to keep the valves cleaner.

More importantly though, I hope they put some forged parts in the new motor...probably won't because of the expansion properties of forged components against stricter emissions.
that was one of the main reasons I wanted an EJ. I had a DI Cobalt SS and it was awesome, but the valve coking was really bad. Luckily for me it was pretty easy to take the intake mani off and walnut blast/clean it. This was at around 50k miles

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Old 12-18-18, 09:15 AM   #16
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Default Re: 2020! too soon?

Quote:
Originally Posted by xX_STI_Xx View Post
I'm glad I picked up a non-DI STI before they go DI.

Direct Injection (although good at making power) suffer from all kinds of carbon related issues. Carbon on valves is at the top of that list. I still prefer port injection over direct injection as the fuel helps to keep the valves cleaner.
Quote:
Originally Posted by Leemanfor View Post
that was one of the main reasons I wanted an EJ. I had a DI Cobalt SS and it was awesome, but the valve coking was really bad. Luckily for me it was pretty easy to take the intake mani off and walnut blast/clean it. This was at around 50k miles
If they are able to use the Toyota D4S tech in the BRZ, this wouldn't be an issue, but if it's like the WRX's FA with DI only that would be an issue. My sister's GTi had more carbon than your cobalt, and ONLY at 50k KM (32k miles)
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Old 12-18-18, 09:47 AM   #17
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Quote:
Originally Posted by GWOT View Post
If they are able to use the Toyota D4S tech in the BRZ, this wouldn't be an issue, but if it's like the WRX's FA with DI only that would be an issue. My sister's GTi had more carbon than your cobalt, and ONLY at 50k KM (32k miles)
That's surprising cause the PCV system on the cobalt is really bad for DI. but I have not worked on a GTI before. Just a VW Bug and my buddies Audi A3 and then A4.

we just did my buddies 2013 Audi A4 on Sunday and for 88k miles, it was not nearly as bad as my Cobalt. but still a good amount of buildup.
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Old 12-20-18, 09:11 AM   #18
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s209?

Limited-Edition Subaru WRX STI S209 May Come to America After All - The Drive

Subaru WRX STI S209 trademark filed in U.S. - Autoblog
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Old 01-08-19, 09:48 AM   #19
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Next-Gen Subaru WRX STI Preview; Is The STI Getting Ready To Explode? | Torque News

340 HP would cause me to trade in the 2017.
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Old 01-08-19, 09:51 AM   #20
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