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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:
- 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
4.4 ★★★★★
Based on 62 reviews
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Product Reviews
★★★★★ 5
Buena calidad
Color: Khaki, Size: 40W x 30L
Bastante más cómodo de lo que esperaba
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Reviewed in the United States on April 29, 2026
★★★★★ 5
Slacks
Color: Classic Black, Size: 42W x 32L
Great look and fit
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Reviewed in the United States on May 1, 2026
★★★★★ 5
Great fit without feeling stiff
Color: Dark Grey, Size: 34W x 30L
I ordered the 32x32 and the fit was exactly what I expected. The slim fit cut looks clean without being too tight through the thighs or calves, and the expandable waistband is honestly one of the best parts. It gives a little extra room when sitting or moving around, but it doesn’t look bulky or obvious like some stretch waist dress pants do. The material feels lightweight and breathable with a little stretch, so they stay comfortable even after wearing them all day.
The quality surprised me for the price. The stitching looked clean, the zipper worked smoothly, and the fabric had a nicer appearance than I expected straight out of the package. They also matched the listing photos well and didn’t have that cheap shiny look some dress pants have. I wore them with a dress shirt for work, but they could easily work with a polo or sweater too. The wrinkle resistance is decent and they held their shape well after sitting for long periods. For the money, these feel like a really solid value and I’d buy another pair in a different color.
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Reviewed in the United States on May 25, 2026
★★★★★ 4
Clean Look with Comfortable Fit
Color: Dark Grey, Size: 34W x 30L
These pants strike a nice balance between formal and comfortable. The slim fit gives them a modern look without being overly tight, and the expandable waist adds a level of comfort that’s noticeable throughout the day.
The fabric feels decent for the price point, and they hold their shape well enough for work or events.
They’re versatile enough to dress up or down depending on what you pair them with.
Pros
Modern slim fit
Expandable waist adds comfort
Versatile for work or events
Clean, polished look
Cons
Fabric isn’t premium-tier
Fit may vary slightly by preference
Overall
A solid option for affordable, comfortable dress pants that still look sharp.
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Reviewed in the United States on April 22, 2026
★★★★★ 5
Great value for a one-time event! Perfect for graduation.
Color: Black, Size: Large, Color: Black, Size: Large
I bought this suit for my son's graduation, and it was exactly what we needed. Since he will probably only wear it once, I didn't want to spend a fortune at a high-end department store. For the price, the quality is surprisingly good; it looked sharp and he received a lot of compliments during the ceremony. We ordered a size Large (L) based on their sizing chart, and it was true to size and fit him perfectly. The fabric is lightweight but doesn't look cheap at all, making this a fantastic, excellent cost-benefit choice if you are looking for an option for a one-time event. Highly recommended!
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Reviewed in the United States on May 18, 2026