06 wrx turbo upgrade - Page 2 - Subaru WRX Forum
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#16 Old 01-06-2010, 11:51 AM
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your fuel pump and intercooler hold back your STOCK setup, let alone any upgrade.

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#17 Old 01-06-2010, 01:30 PM
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So if I upgraded the fuel pump and intercooler I should be fine. Would my stock injectors hold up on that setup? And would I need a tune then?
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#18 Old 01-06-2010, 04:06 PM
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Yes, you'd need a custom tune since you're not going to find an off the shelf map for that setup. That's the advantage of getting a turbo other people have used, you can find base maps to avoid a costly custom tune. That said, custom tunes are awesome and will help nearly any setup. They can be done relatively cheaply too if you do your own logging and loading.

Your stock injectors are decent sized but not huge. They're good for your stock turbo, maybe one slightly larger. Beyond that, they should be upgraded. They're roughly the same size as the ones in the STi which does use a bigger turbo. It's been shown though that the STi can max out it's injectors with the stock turbo so keep that in mind.

The fuel pump can't handle most stage 2 tunes IMHO let a turbo swap on the EJ255. Others will tell you it can handle a bit more but it's a cheap ass part to limit your whole setup on.

The stock 06 WRX intercooler is, again, the smallest of any year USDM WRX.

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#19 Old 01-06-2010, 08:41 PM
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I'm pretty darn sure, blouch rates their turbos at the estimated crank hp levels. Just so you know. Yeah, its going to take some upgrades to even get to your crank hp goals.

Kirt
378awhp/373wtq Custom Dom 3 & CBRD tuned 2006 STI.
"When in doubt...flat out" - Colin McRae
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#20 Old 01-06-2010, 11:53 PM
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I'm think of sending my turbo to them, running a sti intercooler and a walboro 255 fuel pump. Might get a Cobb intake aswell and a tune of course. This setup should run ok you think?
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#21 Old 01-07-2010, 08:47 AM
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That'll work. May not make your bhp goals though.

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#22 Old 01-07-2010, 09:23 AM
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Mind you, that if you are on a budget you should skip the intake. You arent really going to see any gains from it at all. Get yourself a panel filter and search "sliencer delete" or "snorkus delete". You will get the same results and same noise from doing that and spend probably less than half the money you would on the intake.

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#23 Old 01-07-2010, 10:32 AM
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Ok I'll check that out about the intake. I know this may not reach my hp goals. My stock injectors wouldn't support a big 16g would it? What size are my stock injectors?
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#24 Old 01-07-2010, 11:04 AM
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injectors are about 560cc

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#25 Old 01-07-2010, 12:45 PM
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Mosc is right about the size of the injectors. You could technically run the 16G with them and a proper tune, but you would be limited by your injector size. Check out deatschwerks, they buy back your stock injectors. Im not sure what they are buying them back for, but the 06/07 are worth the most, I got $200 back for mine when I bought from them.

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#26 Old 01-08-2010, 08:21 AM
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The OP has an '06 WRX which has an EJ255 2.5L. What no one has mentioned is the fact that a 16G is pretty small for the 2.5L and I would not go smaller than an EVO III 16G. Also, the fact that he should get an 8cm exhaust side b/c 7cm tends to creep on the 2.5L and the 8cm has better throttle response, top end, and is just better suited to the additional flow of 2.5L over the 2.0L.

Personally, I would do either of these turbos:

Blouch TD05H-EVO III Big 16G 8cm
Blouch TD05H-18G 8cm

Either would be a great DDer turbo, but I would give the edge to the 18G being the perfect size turbo w/a better top end due to Blouch using the larger TD06 compressor cover on the 18G.

Lastly, think long and hard about injectors sizing (talk it over with your tuner). B/c it is always good to have a little more headroom in case want to do an E85 tune or upgrade to larger turbo down the road.
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#27 Old 01-08-2010, 08:13 PM
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Thanks for that input coolwrx, i was looking at the evo 3 originally and blouch's evo3 is only 7cm. How is the 16g not a big upgrade? it supports 350 compared to my 235 stock. anyway what do you guys think about this intercooler instead of a sti intercooler? Exhaust
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#28 Old 01-08-2010, 08:39 PM
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Turbo and size really depends on what you want out of the car. The 16G will spool really quick with the 2.5L, ask Mosc, he has one on his STI. I orginally wanted a 16G, but opted for a 20G after really thinking it over and ultimately wanting much more than a 16G could offer.

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#29 Old 01-08-2010, 11:28 PM
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CSS intercoolers are OK. I would never buy their products though. Their repuation is less than stellar. We don't allow vendor bashing so lets just leave it at that though.

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#30 Old 01-09-2010, 10:51 AM
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Would there tmic work on a big 16 or 18g turbo?
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