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Description
Forge Intake Pressure Compensation Valve - FMIPCVForge Motorsport has long been associated with clever, ground breaking innovations, but the companys latest design is one of the smartest ideas to appear onto the automotive aftermarket for quite some time; the Intake Pressure Compensation Valve (IPCV) an idea so ingenious that we have patented it! Dump valves, Blow off valves, call them what you will, but hopefully, were all reasonably familiar with the concept these components are a safe way of
Forge Motorsport has long been associated with clever, ground breaking innovations, but the companys latest design is one of the smartest ideas to appear onto the automotive aftermarket for quite some time; the Intake Pressure Compensation Valve (IPCV) an idea so ingenious that we have patented it!
Dump valves, Blow-off valves, call them what you will, but hopefully, were all reasonably familiar with the concept these components are a safe way of allowing excess boost to escape harmlessly when off-throttle, and holding the boost system tightly in check when mashing it into the carpet. Excess boost vents either to the atmosphere, with its familiar metallic sneeze, or for those that prefer their journey to sound a little more subtle, back to the low pressure side of the turbo circuit, depending on the type of valve you run.On cars with low or factory boost pressures, the spring or diaphragm inside these valves only has to be a fairly weak affair. This allows the valve to move quickly and freely, but with the downside that the valve is useless on a tuned or high-boost car. That lack of resistance simply wont be able to keep the valve gas-tight as the boost pressure increases.
For tuners, the solution to that problem has been simple for many years now, simply up the spring rate inside the valve (diaphragms tend not be up to the job on tuned vehicles) to allow it to cope with the higher internal pressures created by the tuning process. This keeps the valve shut under load, but with the downside that response time is reduced thanks to the spring being stiffer, and therefore physically harder to compress.The fitment of the stronger spring can also limit the opening of the valve which restricts the volume of air it can flow. For this reason, most quality valves come with either a choice of springs or some kind of internal pre-load adjustment, in order to allow the tuner or owner to set the internal spring pressure to match their boost settings.
But this brings us onto to our next problem. Thanks to the plethora of sophisticated ECU software out there, these days, many cars also have some kind of easily-switchable throttle maps. On systems like EcuTek, where moving between throttle and boost maps can be as simple as clicking and flicking your cruise control switch, how on earth can a dump valve spring be perfectly set for your everyday 1.0 bar map, but also work perfectly for your drag strip all-out 1.4 bar mental mapping? Put simply, it cant so up until now, all dump valves had to be set to some sort of compromise to be a jack of all trades, and master of none.
If only there was a way to make the dump valves spring operation completely independent of the spring pressure inside. A way to allow its function to work perfectly at any boost level. Clearly concerned by this very same problem, Forges technicians beavered away to find a solution. What they came up with is called the Intake Pressure Compensation Valve (or IPCV for short) and its really rather clever.
What makes the IPCV valve ingenious is that it re-routes the various high and low pressure feeds through a clever internal piston system (see diagram). When the throttle is opened and the car is accelerating, boost pressure generated by the turbocharger will ensure that whichever dump valve or recirculation valve you have fitted will be kept sealed. As no boost is now being lost through the intercooler (which can usually be anywhere between 1-3 psi of boost drop) the pressure acting on top of the piston of your dump valve is precisely equal to that underneath it. The result? Only a relatively weak spring is required to keep it operating, which means response times can be kept quick and throttle response is immediate.
As dump valve springs usually have to compensate for the pressure drop across the intercooler, and this problem is now no longer an issue, the dump valve can now be run with a very weak spring. In fact, during testing, Forge Motorsport has actually been able to make this system work with no spring in the dump valve at all!
When the throttle is snapped shut either to change gear, or on over-run, the vacuum created by the engine opens up the dump valve and allows the air to either recirculate back around the turbo (in the case of a recirculation valve) or straight back out to the atmosphere. Put simply, what these means, is that even on a fire-breathing 1200 bhp GT-R, the dump valves now only require a very weak spring to operate perfectly with no boost loss, allowing them to open more responsively on partial throttle, improving performance in every gear, and at whatever revs you care to use. Best of all, this principle works as well on a bone-stock Subaru WRX as it does on a Drag-spec Evo. Boost levels simply dont affect this part of the equation any more.
So if you want to know that your valve is always perfectly matched to your engine at all times without any spring changing or adjustment - just fit the Forge IPCV.
In The Box:
1 x FMIPCV Valve
1 x 2000mm Length of 5mm Vacuum Hose
1 x Flat Bracket
1 x Bent Bracket
1 x 5mm T Piece
1 x 6mm T Piece
1 x 6mm Joiner
1 x M6 Penny Washer
1 x M8 Penny Washer
3 x Alternative Vacuum Ports
2 x M4 x 6 Socket Cap Screws
1 x Instructions
1 x Forge Sticker
Applications:
Saab
93
95
Volkswagen
Polo 1.8T
Golf MK4 1.8T
Passat 1.8T
Fiat
Fiat 20v Coupe
Audi
A3 1.8T
A3 1.8T FSI
A4 1.8T (B6) 01-04
TT MK1 98-06
S3 1.8T (8L Chassis)
S4 2.7T
A4 1.8T (B6) 01-04
TT MK1 98-06
S3 1.8T (8L Chassis)
S4 2.7T
Ford
Focus RS Mk1
Fusion 2.0
Focus ST250
Escort RS Turbo
Focus ST225
Focus RS Mk2
Subaru
Forester
Impreza
Mitsubishi
Evo 10
Porsche
996/911 Turbo
Nissan
GTR R35
Juke 1.6 Turbo
GTi-R
Volvo
850 T5
Focus RS Mk1
Fusion 2.0
Focus ST250
Escort RS Turbo
Focus ST225
Focus RS Mk2
Subaru
Forester
Impreza
Mitsubishi
Evo 10
Porsche
996/911 Turbo
Nissan
GTR R35
Juke 1.6 Turbo
GTi-R
Volvo
850 T5
Founded in 1996, Forge Motorsport is a performance parts manufacturer that prides itself on the ideals of innovation, clever design, customer care, and making products of only the highest build quality.
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
4.5 ★★★★★
Based on 12 reviews
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Product Reviews
★★★★★ 5
Mom of 3 recommend!
Size: 5T-6T, Unit Count: 14
I'm using these again for the 3rd time and they're great as always. My 3rd is still having some issues at night time with bed wetting, and as they get older the bigger the mess, so these truly hold up to a full bladder. And they don't smell by morning like some diaper brands. I'm usually against pull ups, but these are great for up and down ease of use and that added protection when it comes to potty training. I love the bigger size inclusion for larger children which we struggle with for comfort compared to other brands.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 14, 2026
★★★★★ 5
Comfort and affordable
Size: Size 5, Unit Count: 56
⭐⭐⭐⭐⭐ Absolute Game Changer for Active Toddlers!
If you have a little one who treats diaper changes like a wrestling match, you need the Pampers Cruisers 360. We switched a few months ago, and I honestly can’t imagine going back to traditional taped diapers.
Here is why they are a staple in our household:
* The "Gap-Free" Fit: The 360-degree stretchy waistband is genius. It fits snugly around the tummy and back, which has completely eliminated those dreaded "blowouts" during playtime or naps.
* Easy On, Easy Off: Putting these on is as simple as pulling up a pair of pants. When it’s time for a change, you just tear the Easy-Tear Sides, roll it up, and use the built-in disposal tape. It makes mid-runway-escape changes actually possible.
* Skin Friendly: My toddler has somewhat sensitive skin, but we’ve had zero issues with rashes. They are incredibly soft—almost like real underwear—and breathe really well.
* Serious Absorbency: Even with a heavy wetter, these hold up overnight without leaks. The Dual Leak-Guard Barriers around the legs are the unsung heroes here.
Bottom line: They are perfect for the "crawler-to-walker" transition. They stay in place no matter how much climbing or sprinting is happening. Definitely worth every penny for the peace of mind (and the saved outfits)!
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Reviewed in the United States on March 3, 2026
★★★★★ 5
Perfect diapers -soft,absorbent,and no leaks!
Size: Size 6, Unit Count: 48
These Pampers diapers are amazing! The material is very soft and comfortable for my baby. They have great absorbency and can last through the night without any leaks. I also noticed no rashes or irritation, which is very important to me. The fit is perfect and easy to put on. Definitely one of the best diapers I’ve used. Highly recommended!
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Reviewed in the United States on April 11, 2026
★★★★★ 5
Mom of 6 approved
Size: Size 3, Unit Count: 78
I'm a mom of 6 and these are the best diapers. No problems. Extremely soft and comfy. Easiest diaper to get on a toddler doing the alligator roll. I put my hands through the leg holes and grab their feet to pull them through for easiest pull on. No problems with blow outs. I love the new tear off feature, so no issue with getting them off. I get them on subscription on Amazon to save money and get the big pack.
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Recommended
Size: Size 5, Unit Count: 100
I absolutely love these Pampers Cruisers 360 Size 5 diapers! As a parent of an active toddler, diaper changes used to be such a struggle—but these have made a huge difference.
The pull-on style is a game changer. I can quickly put them on even when my child is moving around, and the 360° stretchy waistband fits snugly without being too tight. It really feels like little “training pants,” which is great as we slowly move toward potty training.
What impressed me the most is how leak-proof and absorbent they are. Even during long days or naps, they keep my child dry and comfortable. The material is also very soft and gentle on the skin, and we haven’t had any irritation or rashes at all. (They’re actually designed to be gentle and hypoallergenic, which gives extra peace of mind.)
I also love the easy tear-away sides and disposal tape—it makes cleanup so quick and mess-free.
Overall, these diapers are perfect for active toddlers. Comfortable, reliable, and super convenient—I highly recommend them!
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Reviewed in the United States on April 28, 2026
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