SKU: 22210601937

IHI PERFORMANCE OEM+ VF48 SUBARU EJ25 TURBO UPGRADE

Sale price$656.10 Regular price$729.00
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Ships within 48 hours · Estimated delivery Jul 17 - Jul 22

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Description

IHI PERFORMANCE OEM+ VF48 SUBARU EJ25 TURBO UPGRADEIHI PERFORMANCE OEM+ VF48 SUBARU EJ25 TURBO UPGRADE WILL TAKE YOUR EJ25 TO THE NEXT LEVEL The IHI Performance VF48 is a stock appearing OEM+ turbo upgrade for Subarus 2. 5L EJ25 engine. Its a perfect option for someone who craves a mild boost in power over the OEM turbo but doesnt want to sacrifice quality or reliability. Manufactured by IHI, Subarus factory turbo partner, this turbo spools early like a stock VF39, VF41, or VF48, but IHI utilized an

IHI PERFORMANCE OEM+ VF48 SUBARU EJ25 TURBO UPGRADE WILL TAKE YOUR EJ25 TO THE NEXT LEVEL

The IHI Performance VF48 is a stock appearing OEM+ turbo upgrade for Subaru’s 2.5L EJ25 engine. It’s a perfect option for someone who craves a mild boost in power over the OEM turbo but doesn’t want to sacrifice quality or reliability. Manufactured by IHI, Subaru’s factory turbo partner, this turbo spools early like a stock VF39, VF41, or VF48, but IHI utilized an advanced compressor wheel design to move more air, providing an OEM+ solution for any driver looking to boost the performance of their Subaru.

The IHI turbo upgrade shares the same reliability and fitment as an OEM Subaru turbo, meaning it connects perfectly to stock components and fittings. Expect pump gas power gains of 400+hp with improved throttle response and boost modulation.

  • Note: this turbocharger is ARA homologated for legal use in competitive rally racing.

POWER NUMBERS AND BENEFITS

  • An Easy Power Boost
    • Increase EJ25 engine output 300-400+hp.
  • Rally-ready homologated. Legal for use in ARA Rally Competition.
  • PREDICTABLE PERFORMANCE
  • OEM reliability. You get improved throttle response and control.
  • SIMPLE INSTALL
  • Bolts directly to EJ25 stock components, making installation easy. 

 

COMPRESSOR SPECIFICATIONS

  • Compressor Type: Precisely machined aluminum forged big compressor wheel for quicker spool
  • Compressor Wheel OD (exducer): 62mm (Stock STI is 60mm)
  • Compressor Wheel Inducer: 48.32mm (Stock STI is 46.5mm)

COMPRESSOR HOUSING CONNECTIONS

  • Inlet: OEM 04+ STI
  • Outlet: OEM 04+ STI

TURBINE SPECIFICATIONS

  • Turbine Housing Size: P18
  • Turbine Inducer: 53mm
  • Turbine Exducer: 48mm

FITMENT INFO

  • Compatible with: GD & GR WRX, STI, Legacy GT, and Forester

TECHNICAL NOTES

  • This IHI turbo upgrade is designed specifically for the Subaru EJ25 engine
  • Stock components will bolt right up to this turbo, meaning no other modifications are needed.
  • If the turbocharger unit you select has the adjustable turnbuckle actuator, please use a precise boost gauge and fasten the nuts of the turnbuckle on the actuator rod when adjusting.
  • To control boost pressure, you will need a boost controller or solenoid which is sold separately.
  • You must run premium pump gas or e85 once this turbo is installed and tuned.
  • Subaru highly recommends purchasing a new Banjo Bolt and Screen (SUB 14445AA090) with any installation of a new turbo.​
  • This turbo may also work for other Subaru models of different years, but additional modifications may be required.
Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. Standard Shipping : 3-10 business days
  • If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 22210601937

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Isabel H.
Carnegie, US
★★★★★ 5
10/10
Color: Multicolor-4pack-a1, Size: Small
These are some of my favorite underwear. I find myself reaching for these constantly. They're very good quality and very stretchy. I'm 140 5'3 and I got a small they fit great. Someone larger or smaller would fit in the small too. I do stress that the leg holes are a bit tight on my thighs and I don't have thick thighs at all. On someone with thicker thighs I'd say size up to a medium. You can wear these as mid/high waisted or low waisted. They're versatile! The cotton gusset is a plus too❣️
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Reviewed in the United States on May 17, 2026
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Miss Stevie
San Leandro, US
★★★★★ 5
Better than Haynes at for less money
Color: Multicolor-4pack-a1, Size: XX-Large
I am surprised by the quality of these knickers. They are better than Haynes for less money and when I say they’re better, I mean far better, but I can’t believe how comfortable and STRETCHY best underwear is
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Reviewed in the United States on April 25, 2026
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Elaine phiri
Alexandria, US
★★★★★ 5
love love love!!
Color: Multicolor-4pack-a1, Size: Medium
like my daily driver now, like i never thought underwear could be this good untill now! have bought 2 4packd and will probably get more in the future :) they are snug but not suffocating, with my darker skin i was worried of them getting darker in that area but so far(3-4 months) they’ve been holding up well and clean easily in the washing with a bit of stain remover!
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Reviewed in the United States on May 19, 2026
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Mark & Ashley
Phoenix, US
★★★★★ 3
Satisfactory
Color: Multicolor-4pack-a1, Size: X-Large
If your wanting an easy on high waisted underwear these work. They are honestly strange material, a mix of three different things- not bad but different. Not seamless, might ride up, slightly on the thicker side. Will last a while. Comfortable enough but not amazing. Got for after a surgery and needed something different- these worked but would I get on a normal day probably not.
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Reviewed in the United States on May 15, 2026
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Siobhan Smith
Lake Worth, US
★★★★★ 5
Super soft and comfortable!
I haven't bought new underwear in forever. I used to wear thongs, but now find them incredibly uncomfortable. The last few times I've tried to buy new underwear, the sizing was either way off (I'm a medium, but gave up after having to return them for a large and then extra large) or the quality was horrible (two brands stretch waaaay out and they can fall down while wearing them (I have larger ass-ets, so they shouldn't start to slide down during use). I tried these after buying some bamboo pyjamas and I love them! They are incredibly soft, comfortable, and stretchy. I can use them all day, and they work well, whether I'm lounging on the couch or wearing them under my spandex shorts at the gym, they don't ride up or slide down. They are both comfortable and look sexy, while providing support in all the right places. I haven't had them too long, so I can't speak on the durability, but they appear to be of good quality and I plan to order more, this time without the band.
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Reviewed in the United States on November 13, 2025

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