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Tomei ARMS M8265 Turbo
Subaru Models (inc. 2002-2007 WRX / 2004+ STI)
Features & Product Details
RallySport Direct is proud to provide you with more quality turbocharger options brought to you by Tomei.
On this page, you are looking at the Tomei ARMS M8265 Single Scroll Turbocharger. This turbocharger has the potential to produce up to 450 HP in the stock layout.
Additional info:
NOTE: A silicone inlet hose is needed when using this turbo as the inlet is slightly larger than stock.
Specifications
Brand:
Tomei
Bearing Type:
Journal Bearing
Cartridge:
Tomei
Fitment:
OEM Upgrade
Gaskets Included:
Yes
Inlet Size:
Non OEM
Oil Line Included:
No
Ported Turbine Housing:
No
Rated Horsepower:
450hp
Scroll:
Single
Wastegate:
Internal
Mfgr. Warranty:
1 Year
Condition:
New Product
Return Policy:
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
Standard
RallySport Guarantee - 30 Days
Items that are covered under the RallySport Guarantee offer a 30 day no questions asked return policy.
RallySport Guarantee items may be returned within 30 days of the original invoice date and must include all the original parts and contents for a refund.
The RallySport Guarantee does not apply to products that have been modified, damaged, misused or abused. All returns require an RMA (Return Merchandise Authorization) Number, and freight charges are strictly non-refundable. For more information regarding our freight refund policy, please refer to our return policy page found HERE.
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REVIEWS & CUSTOMER MEDIA
Customer Photos and Videos
5out of
5stars
Bad.Driver
This isn't the most boost happy turbo but it creates very usable power. Peak torque for me comes in at around 5600 rpm & 20psi. The turbo does seem to be able to boost up to about 27PSI but I think anything above 25 is out of its efficiency rage. It wont out gun any rotated setup but will do just fine at about everything else. Worth every penny.
5out of
5stars
striker775
Installed a '07 STI. This turbo is definitely pretty to look at. This turbo might not be as big as some of the others on the market, but for the price per performance. It's pretty good. I'm happy with this turbo and I’ve been running it for 4 months now. Here are the numbers from this turbo: HP=338 and TQ=325. I've upgraded everything externally and the internals are still stock. I live at a elevation of 4400 ft and with 91 octane. My tune was a little conservative and down the road I will rebuild the motor to get more out of the turbo.
4out of
5stars
IG: @dustyboi808
So after having this turbo installed for about 2years, I haven’t gotten the chance to boost the car because I was untuned the whole time. I finally got tuned and here is what I got. On the dyno we discovered that my EBCS (turbosmart e-boost street) was seized after not boosting for couple years. We could only push it at max boost 16psi results: 355whp 338tq. Now as stated in the title, I picked up a Hallman manual and installed that the same night, went out on the street with my tuner and pushed it up to 21psi, we didn’t get a direct number on the street but DrunkMan laughed and guaranteed it is now over 400whp for sure. I noticed that RallySportDirect *HPrating* is at the crank (450hp) so roughly 350-360whp. But with supporting mods: 850cc injectors, deatchwerks 300 320lph fuel pump, agency power EL headers, Invidia turbo back, Perrin cold air Big Maf intake, Perrin 3” silicone inlet, cosworth head studs, 100mm Pistons, eagle rods, ACL race rod/main bearings, Spearco TMIC, exedy pressure plate, ACT 6puck disc, and as well as methanol this turbo can surpass 400whp. Over all this turbo is still a bit “punchy” as it is not a really big turbo it does not have a completely horrible boost lag. Full boost comes on at about 3700-3800 not at 4K light it is stated on the Tomei website. I’m sure others with bigger supporting mods and maybe higher boost are pushing it waaay pass 400whp
1 of 1 people found the following review helpful
5out of
5stars
SW 808
Beautiful turbo and quick and easy install. I have this on my EJ207 V7 w/ the Tomei headers, Up-pipe and cat back exhaust along with DW 1000cc injectors and the ETS FMIC. Without hesitation the car put down 425hp/385tq on 25lbs consistently and we took it much much higher. Keep in mind the power band is higher more of a higher mid/top end range. Being i have the FMIC i do get a tad bit of lag pending driving condition, however when this turbo starts to spool you will know and for sure hear it. Definitely would recommend but as always, check with your tuner first! Haha
2 of 2 people found the following review helpful
5out of
5stars
tanvir dhaliwal
Fits better then the stock turbo! Installing was very easy, everything fits so perfectly and sounds like a beast! Made very good numbers and highly recommend.
QUESTIONS & ANSWERS
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Q: hotside /internal wastegate pappasmurfsti7 months ago
Filling out drunkmann tuning sheet. the sheet asks what the hotside is and what the internal wastegate spring in PSI is. can you help me out? i have the m8265 in a 2004 sti that the previous owner built.
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0 of 0 people found the following answer helpful
A: Compressor Wheel: 52 Trim, 54.8mm Inlet Diameter, 76.2mm Exit Diameter Turbine Wheel: 77.1 Trim, 67.0mm Inlet Diameter, 58.8mm Exit Diameter. Unfortunately, with this item being discontinued, we would not have a direct answer for you.
Devan M. @ RallySport Direct 7 months agoWas this answer helpful?
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0 of 0 people found the following answer helpful
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Q: Turbo inlet 2013sti8 months ago
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0 of 0 people found the following answer helpful
A: This turbo has been discontinued.
Devan M. @ RallySport Direct 8 months agoWas this answer helpful? -
0 of 0 people found the following answer helpful
A: I have the mx8265
2013sti @Was this answer helpful?
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0 of 0 people found the following answer helpful
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Q: TGV deletes T-Bone11 months ago
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0 of 0 people found the following answer helpful
A: You should be able to install this turbo with the required inlet while retaining the stock TGVs.
Marcus E. @ RallySport Direct 10 months agoWas this answer helpful?
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0 of 0 people found the following answer helpful
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Q: Inlet size Mike04sti11 months ago
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0 of 0 people found the following answer helpful
A: This will work with the Tomei inlet. Their inlet comes with several adapters to fit their ARMS series, as well as OEM inlet sized turbos.
Marcus E. @ RallySport Direct 9 months agoWas this answer helpful?
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0 of 0 people found the following answer helpful
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Q: 05 wrx Richard11 months ago
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0 of 0 people found the following answer helpful
A: This would be better suited towards the 2.5L models, it could be a bit laggy on the 2.0L. It also might be a bit on the high side for stock internals. For your application, a 16G-18G, or possibly a Tomei 7760 would work best.
Marcus E. @ RallySport Direct 9 months agoWas this answer helpful?
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0 of 0 people found the following answer helpful
