Need to hear clips of the 4.5 when ready!
IAG Built| HTA86| >500whp| Daily driven for 180,000 miles
Disclaimer: I have no sponsorships or financial ties to IAG or any other companies listed in my journal. I am a hard-working, private owner of this vehicle and its modifications.
Milltek exhaust 5/2019
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My feedback on this project: NASIOC - View Single Post - IAG Performance (merged thread)
Love, it's what makes a Subaru, a Subaru
IAG V-band Rotated Turbo Kit
Credits to Boris at IAG for these spectacular images!
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fuckin surgical welds
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My feedback on this project: NASIOC - View Single Post - IAG Performance (merged thread)
Love, it's what makes a Subaru, a Subaru
IAG V-band Rotated Turbo Kit
- Xona Rotor 8269S turbo 0.82 A/R
- IAG 4" Intake with Blox racing velocity stack
- IAG V-band Uppipe with Tial 44mm MVR External Wastegate
- IAG V-band Catless Downpipe
- ETS 4” FMIC
- KillerB 4-1 Holy Header (KillerB vs. Tomei EL header dyno results) --> ETS V2 header (ETS V2 header vs. Killer B header dyno)
- Milltek 3" catback exhaust with PTE 66mm wastegate welded into exhaust as exhaust bypass (Dyno results)
- Grimmspeed Electronic Boost Control Solenoid
- Koyo radiator with HyperV core
- JDM 1.3bar STi radiator cap
- Tial Q BOV
- NGK 4901 race spark plugs gapped to 0.024"
- IAG Competition Air-Oil Separator (IAG AOS Review)
- Stock Air Pump deleted
- IAT sensor and AEM 3.5 Bar MAP sensor
- Big 3 Wire upgrade
- HKS grounding kit
- Injector Dynamics 2000cc injectors
- IAG Fuel Rails
- Radium In-tank dual pump hanger with 2 Walbro E85 compatible 465lph pumps
- Parallel Vibrant PTFE -8AN feed and -6AN return lines for E85
- Cobb Fuel Pressure Sensor
- Cobb FlexFuel + Speed Density
- IAG Closed deck
- IAG-Spec JE FSR 2618
- IAG-Spec Tri-Beam connecting rods with ARP 625+ rods bolts
- Kinh Main and Rod Bearings
- OEM Nitrided Crank
- Pinned Mains
- OEM 11mm Oil Pump
- Gates Racing Timing Belt Kit
- 12,000mile/1year warranty
- Flipped Cosworth Manifold with retained Air Conditioning Stock Vs. Cosworth IM comparison
- 14mm IAG head studs
- IAG Firelock headgasket
- Ferrea +1mm Comp exhaust and intake valves
- Ferrea dual drag valve springs and titanium retainers
- IAG Stage V headwork with Multi Angle Valve Job/Port&Polish
- Kelford Dual AVCS 272/268 11.30/10.50mm Lift Street Cams
- Cosworth Phenolic Spacers
- IAG TGV Deletes
- 12,000mile/1year warranty
- JNA V-limited polyurethane lip
- Volk CE28CR2 18x10 +40mm in Satin black
- Front and Rear fenders rolled and pulled by IAG
- 295/30/18 Michelin Pilot Sport 4S
- Lamin-X Taillight overlays
- Plastdip'ed Silver mustache
- Daytime running lights deleted
- 15% tint
- 2015 STi 13.0:1 Steering Rack retrofit
- SuperPro Steering Rack bushings
- Cusco Steering Brace
- RCE Superstreet-1 Coilovers
- RCE 25.5mm Front and Rear Sway Bars
- Kartboy Endlinks
- Whiteline Roll Center Adjustment/Bump Steer Kit
- 2011 STI OEM Front Control Arms
- Aligned to -2.5F/-2.3R; 0 toe; +6.95 caster
- Project Mu B-Force front brake pads, Stoptech rear brake pads
- Girodisc front and rear rotors
- Exedy HD Triple Disc; OEM Flywheel
- GroupN Engine Mounts
- GroupN Transmission Mount
- GroupN Pitch Stop
- Whiteline Positive Shift Kit
- Whiteline Subframe Inserts
- Whiteline Rear Differential Inserts
- Kartboy Front Shifter Bushing
- Kartboy Shortshifter
- Driveshaft Shop CF driveshaft
- Fluidampr Crank Pulley
Credits to Boris at IAG for these spectacular images!
fuckin surgical welds
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3121 - 3140 of 3212 Posts
[4.5L GT4 review] Best sports car ever made? - Rennlist - Porsche Discussion Forums posted up some vids in my review thread 
I got a problem with the car breaking up above 30psi it drives smoothly out of boost and below 30psi. The spark plugs/coil packs are all new and gapped appropriately to 0.024. The -10AN fragola fuel filter is new, injectors are new, Walbro fuel pumps are all new, air fuel and fuel pressure are all good. I think the spark is getting too weak for high boost pressures. I may need to change out my 14 year old alternator and get a grounding kit
it drives smoothly out of boost and below 30psi. The spark plugs/coil packs are all new and gapped appropriately to 0.024. The -10AN fragola fuel filter is new, injectors are new, Walbro fuel pumps are all new, air fuel and fuel pressure are all good. I think the spark is getting too weak for high boost pressures. I may need to change out my 14 year old alternator and get a grounding kit 
OEM has been most reliable and held up 800whp for 12k miles
has been most reliable and held up 800whp for 12k miles 
been done with the car for 1 year now, all bolts with stock turbo/motor 400whp/375wtq, E85, carbon fiber driveshaft, RCE super street coilovers, and Stoptech brakes. The tamest of all my cars
I test drove the 2022 WRX, interior is way nicer and bigger, will upgrade once aftermarket support maxes the FA24 out
Nice build! Do you have a log for your WRX? How are the RCE super streets for street driving? I'm starting to see the 22's on the street now, the looks don't bother me, might be my next daily.been done with the car for 1 year now, all bolts with stock turbo/motor 400whp/375wtq, E85, carbon fiber driveshaft, RCE super street coilovers, and Stoptech brakes. The tamest of all my cars
I test drove the 2022 WRX, interior is way nicer and bigger, will upgrade once aftermarket support maxes the FA24 out
Nope no journal lol the RCE superstreets are great, I loved them on the WRX so I got a set for the STI too
the RCE superstreets are great, I loved them on the WRX so I got a set for the STI too
Thanks, I’m thinking about getting a set for my STI that I daily and they seem to fit the bill.Nope no journal lol
Very very nice build![4.5L GT4 review] Best sports car ever made? - Rennlist - Porsche Discussion Forums posted up some vids in my review thread
"I never regret any money I spend on my cars because psychiatrists and institutionalization is way more expensive"
Also I'm totally stealing that line the next time anyone asks me why I spend money on my car.
That's high praise.Nope, upgrading the GT4 has erased all desire to get a GT3 and GT4RS
Words I’ll forever live by
After 14 years, my AC compressor has finally died
Honestly with all the millions of things that can be upgraded on our cars, I think AC compressor and windshields are the only thing I can think of that dont have an "upgrade" possibility.After 14 years, my AC compressor has finally died
Atleast you got 14 years out of your compressor
Honestly with all the millions of things that can be upgraded on our cars, I think AC compressor and windshields are the only thing I can think of that dont have an "upgrade" possibility.
Atleast you got 14 years out of your compressor
You can get a clear, ceramic tint put on your windshield to keep out about 97%of all UV light. So it's probably just the ac compressor you can't upgrade.
Car is all fixed! Turns out all my boost issues are due to my 14 old Grimmspeed EBCS! Car is back hitting 40psi smoothly
3121 - 3140 of 3212 Posts
