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08-28-2016, 12:23 PM | #1 |
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Arashi TD06SL2 20G Turbo Review
After just over 100K miles, the VF52 on my '09 WRX was starting to seep a bit of oil into the intercooler. I wanted an upgrade, but didn't want to go too big for my daily driver. I wanted more power with minimal lag and a big, juicy midrange pull, so I started looking at 20Gs with SL2 turbine wheels. I don't plan on dyno-ing the car because I couldn't care less about bragging rights; I want a quick car with good throttle response for having fun and squirting through traffic.
After doing quite a bit of research, I settled on an Arashi Dynamics TD06SL2 20G with an 8cm housing http://www.arashidynamics.com/products_detail.php?id=39 The pricepoint ($719) fit squarely between the disposable Chinese Ebay turbos and the more expensive Kinugawa, Cobb, and Blouch 20Gs. I read numerous positive online reviews on the quality and reliability of their turbos, so I figured I'd take a chance on a Taiwanese turbo with (allegedly) Japanese components. There's conjecture online that Cobb's 20G turbo may actually be a re-branded Arashi, but I have no evidence to confirm this. I purchased the turbo from their web site, and selected the 9-blade SL2 turbine wheel (54 x 61mm) with the standard 6+6 blade billet compressor (52.5 x 68mm). They offer multiple options for turbine/compressor wheels at no additional charge. I received an email within a few minutes confirming the order and providing details on the shipping method and duration. I emailed the company a couple times with specific questions and received a reply within 24 hours each time. Their English was very clear and easy to understand. My turbo shipped from Taiwan in approx. 6 days. I had emailed to ask if they could get the turbo to me as quickly as possible, so they upgraded the shipping to Fed Ex Priority for free. They also provided the Fed Ex tracking number. When I unboxed it, I was pretty impressed with how professionally it was packaged. The quality of the hardware kit that comes with it looked excellent, and included a stainless steel oil supply hose. I was also impressed with the overall quality (in appearance) of the turbo. The hot side was nicely finished with no rough casting marks. Installation was pretty straightforward; everything mated up perfectly, and the multi-layer gaskets and hardware worked as advertised. The only modification I had to do was to trim the OEM heat shield to fit over the beefier WG actuator rod. After installation, I took a couple pics of the installed turbo and sent them to Arashi for their Facebook page. They sent me $30 for the promo shout-out. My tuner had a pretty easy time dialing in the tune for this turbo. Target boost was set at 19 psi. He started with a base fuel efficiency map, and then added fuel and timing to bring the boost in. We kept the tune pretty conservative since I'm on a stock block with 105K miles on it and I didn't want to beat on my 5-speed too hard. Driving impressions: this is an excellent DD turbo! I was concerned that spool would suffer compared to the VF52, but it builds boost so much more linearly than the stock turbo. It feels much beefier and smoother throughout the rpm range. The VF52 would spool hard, but run out of steam around 5,000 rpm, while the 20G just pushes hard from 3,500 - 6,500 rpm. Throttle response is excellent! Passing on the freeway or goosing the throttle on an onramp feels smooth and effortless compared to the stock turbo. And my mileage has improved about 3 mpg on the freeway. I'm getting an average of 26-30 mpg on my freeway commutes now. I'm keeping my fingers crossed on the reliability and longevity of this turbo, but my impression so far has been very positive. My setup: Process West TMIC, Devil's Own Water/Meth injection, GT Spec EL header, Cobb catted DP, X-Force catback Last edited by kingsalami; 09-16-2016 at 02:49 PM. |
08-31-2016, 06:49 PM | #2 | |
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08-31-2016, 07:40 PM | #3 |
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Didn't dyno the car.
The tune is on 91 pump + meth injection and pretty conservative. This turbo is capable of quite a bit more if you run a really aggressive tune w/ more timing and boost. But long term reliability is a primary concern for me. |
09-01-2016, 12:36 AM | #4 | |
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So u don't have any number for your review ?? Just that it's a conservative tune ?? That doesn't help many people.. That's like saying I have a car.. It drives great .. But not sure the power level |
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09-01-2016, 11:39 AM | #5 |
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^^^+1 Some dyno numbers or better yet trap speeds down the 1/4mi would be great. With your 5spd. Start a pull at 2500rpm and go WOT. Log the car and report what rpm you see target boost starting pull at 2500rpm.
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09-12-2016, 12:54 PM | #7 |
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Arashi TD06SL2 20G Turbo Review
some ppl care about quality of a part. dyno numbers arent everything.
its a 20G on a 205... you really need to see ANOTHER dyno sheet? theres a million of them out there. thanks OP for sharing your thoughts on this product. being an unknown company, its nice to see they make a decent product. Last edited by Titter; 09-12-2016 at 01:00 PM. |
09-12-2016, 05:53 PM | #8 | |
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I can buy a $200 Chinese junk turbo and throw down some pretty decent initial dyno numbers. Dyno numbers are somewhat dubious, so are fairly worthless to me. The tune is really the key here...a buddy has a Legacy GT with the same turbo on a built block with a really aggressive tune, and it's putting out over 430 ft lbs of torque on pump gas and meth injection. That thing is an animal! This was posted for guys who are interested in a quality DD turbo that provides a nice, meaty torque curve without sacrificing spool. I'm glad to see that I'm not the only one. |
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07-14-2017, 01:27 PM | #10 |
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Gonna bring this back after awhile... How are these turbos holding up? Still running great? No shaft play, or excessive oil consumption?
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07-14-2017, 01:40 PM | #11 |
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I had the smaller td05 20g and I loved it. I made 330 whp (dynojet) on an ej205. I loved it, it spooled like a vf and but didn't die off as quick. 2 of my friends are still running theirs one a td05 20 and one a td06 20g both doing well and not burning oil.
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07-14-2017, 02:01 PM | #12 |
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So far, so good. Mine is just perfect.
Unfortunately, my car is down for an engine rebuild, but I hope to have it back on the road in a week or so. We'll see what this turbo can do with the wick turned up a bit more on a built block. |
08-31-2017, 03:56 PM | #14 | |
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I should get the car back this weekend. Anyhoo...I'd go ahead and pick one of these up. IMO, these Arashi turbos are a great deal for the money, and their customer service really impressed me. I'm not sure you can find higher quality turbo for $700. Edit - Correction: ...for $669. That's a killer deal. |
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09-09-2017, 08:49 PM | #15 |
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I've been there dude! Hope it's ready for you soon. I'm still in for your results. I am down to deciding between this Arashi or the exact same turbo specs but built by Mamba (used to sort of be Kimugawa).
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11-11-2017, 11:43 PM | #16 | |
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Great review by the way, you got me interested and if i do end up buying this turbo its because of your review! |
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11-12-2017, 08:22 AM | #17 | |
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Sit tight, they do offer sales every so often. They had these for under $700 a few months ago. I'm about 1000 miles from my post-engine rebuild retune...I really pumped to see what this turbo can do with forged internals. I've got over 15K miles on it so far - no issues or concerns. |
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10-03-2017, 09:19 AM | #19 |
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Thanks for thinking of me!
I'm about 700 miles into my engine break-in period. It's got a pretty basic tune, but is running strong with excellent throttle response. I'm trying to keep it below 4600 rpm, with no more than 10 psi of boost for the next 800 miles or so. I'm planning on logging a few virtual dyno runs after I get my meth injection re-installed and get the car retuned. Last edited by kingsalami; 10-03-2017 at 09:38 AM. |
12-11-2017, 03:50 PM | #20 |
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FINALLY retuned!
My tuner spent a couple days tweaking the street tune for efficiency and power. He initially hit 430 hp at around 7k rpm with around 380 ft/lbs of torque peaking around 5k rpm. He deliberately kept the torque under 400 ft/lbs, concerned about the longevity of my 5-spd tranny. This turbo, with the right supporting mods, is capable of putting out around 430 hp & torque (on 91 octane w/ a #7 meth injector nozzle) with a pretty aggressive tune. He left a bit of power on the table, as dependability and longevity were my primary concerns. For my DD, he dialed in a very linear torque curve. It's really smooth and deceptively quick. He likes this turbo...said it was really easy to tune. Last edited by kingsalami; 12-12-2017 at 01:15 PM. |
01-04-2018, 12:48 PM | #21 |
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kingsalami, thanks for this excellent review. I have a few questions as this turbo really seems to be what I am looking for and in the price range I want to spend on a car worth less than 10k. I have a 2006 9-2x aero 5mt with a fresh-ish stock ej255 (~20kmi). Supporting mods include a full 3 in catted turbo XS turbo-back exhaust, 06 Sti TMIC, Perrin turbo inlet, 255 walbro, ARD tuning Td04-19t using an 11blade GTX wheel/housing, and 565cc injectors on a newer OEM clutch. Combo made 276hp/305tq on 91octane at 16psi at Surgeline on a conservative tune. Boosts comes on at 2800. Its fun but is totally choked when rev'd out.
Been running that combo for about 2 years and my new goal is to make 330-350 awhp at 18-20psi. Hopefully closer to 350. Most tuners say to go with a TD05-18G 8cm2 but I am weary that the 18G will bring on boost/torque too quickly for 5mt durability. Most users say they really only get 320-330 awhp and that the turbo starts to die around 6k. I want top end breathing but not necessarily big numbers for occasional track days, 6500 rpm target. It seems the TD06SL2-20G-8cm2 is a happy medium between the standard TD05-18G and TD06-20G. You get the flow of the 20G compressor but the quicker exhaust wheel of TD06 family. To support the new turbo I will be going to cobb ID1000s, cobb SF intake and full TGV deletes. Could you provide some insight on: 1.) Why did you go with the 6x6 wheel over the 11blade GTX? It would seem the 11blade would spool quicker. Was this to ramp in boost later to be easier on the 5mt and stock internals? 2.) Have you always run this turbo on meth as per your mod list? Do you ever run it on just pump gas alone and if so how does it affect its performance? Was meth worth it in your opinion on your setup or did you just already have it installed prior? Would you recommend the extra $400-500 for its benefits and cooling? I fully realize that 350awhp on pump is the ragged edge of stock internals and trans. Their durability is totally reliant on quality tune and good riving habits. Thanks! |
01-04-2018, 05:57 PM | #22 | |
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On the turbine/compressor question, I did quite a bit of research on the differences between wheels, and wanted a happy medium - good spool with decent flow up top. From my recollection--and experience with this turbo--I think this combo offers a great "spool vs. top end flow" balance. A less surgey, more linear boost curve should keep your 5-spd happier, too. I would definitely go with the 20g vs the 18g. For the same price, you're getting more flow, with a very minuscule (probably imperceptible) increase in lag. I already had meth installed when I upgraded to this turbo. As far as whether it's worth it or not, I would defer to your tuner. My tuner really likes meth injection and is very experienced tuning with it. The biggest benefit is in the summer when heat soak rears it's ugly head. The meth allows you to get away with a bit more timing and boost--it improves throttle response and power, and lets you run a leaner mixture at higher boost levels (50% meth/water adds octane, cools the air charge, and cleans your cylinders). A buddy has an older STI running 9.91 quarter mile passes on 91 octane and meth injection. IMO, it's definitely worth the money for a decent kit. A 2 gallon jug of methanol lasts me about 6-8 months. Hey, it looks like Arashi has these on sale right now. Let me know how it goes. |
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01-04-2018, 07:06 PM | #23 |
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Thanks for the reply. Do you remember the difference specifically in the 6x6 vs 11 blade wheel performance? 6x6 flows more while sacrificing spool?
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01-04-2018, 08:38 PM | #24 |
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Sorry, I really don't remember. But I was concerned with lag, so I'm pretty sure that wheel moves the torque curve a bit lower on the tach.
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01-05-2018, 06:54 AM | #25 |
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Arashi TD06SL2 20G Turbo Review
generally speaking:
more blades = more power down low less blades = more power up top a 6+6 will flow more up top than an 11 blade. (also you would think 6+6=12 which is more than 11, but thats not the case. count each double blade as 1 blade) again... this is a generalized statement when comparing blade design on two exactly similar turbos. (if you had 2 exact turbos and replaced just the wheel) |
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