Mad Cow: A 475-HP Acura Integra GS-R That Lost Its Mind

From the Prairies to pure insanity, this Calgary-tuned Integra GS-R is the ultimate boosted beast.

Originally published November 2011. Updated and republished late 2025.


When you think of the Alberta Prairies (as you often do), you think of warm Chinook winds, rolling foothills, open blue skies, and the recent, isolated case of Mad Cow. Now you have one more thing to think about—this ’98 Acura Integra GS-R, a car so sick it puts The Mad Cow to shame. Both are completely insane, and whether it’s at the track or on your dinner plate, they intend to spank you silly.

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Choosing the Project: Why a 1998 Acura Integra GS-R?

Tuned 1998 Acura Integra GS-R
1998 Acura Integra GS-R (Amee Reehal)

Many import enthusiasts have made the switch from the world of sound systems to that of strict performance enhancement, sacrificing the decibels in lieu of high hp gains, and Colin Tull from Calgary, Alberta, Canada, is no exception. With Colin’s first two cars, a ’92 Civic Hatchback and then a ’91 Honda CRX, it was all about the stereo.

1998 Acura Integra GS-R
1998 Acura Integra GS-R. Photo: Amee Reehal

Then his power-hungry cravings finally surfaced. “For my next project, I wanted power and performance,” he says, “So I picked up a brand new GS-R and never looked back.” The first attempt was a nitrous setup, but unsatisfying results led to a built motor using a Greddy kit, producing ETs in the mere 13’s. Unfulfilled, Colin handed his keys over to the team at Speedtech Racing & Development (STRD), one of Western Canada’s premier tuning shops.

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Performance First: How the Madness Began

1998 Acura Integra GS-R
1998 Acura Integra GS-R. Photo: Amee Reehal
  • Engine: Acura 1.8-liter, 4-cylinder, 16-valve, DOHC with Variable Valve Timing and Lift Electronic Control (VTEC) system, Turbo
  • Power: 355 whp @ 12psi; 475 whp+ @ 25-28psi (est.)

The derangement began with a Garrett GT30 ball-bearing turbo, offering increased durability and more power to the impressive 1.8L B18C1 inline-4 engine. The block was enhanced with Darton sleeves and 9:0.1 compression pistons, along with a selection of Crower components, including Billet connecting rods, turbo camshafts, valve springs, titanium retainers, and stainless steel valves.

“The wastegate was now maxed out at 20psi, so we are going to replace it with a upgraded spring. We’re going to run at 25-28psi and intend on breaking 500whp.”

An ACT Extreme clutch kit was thrown in to help distribute the power, along with an HKS SSQV blow-off valve to relieve the madness. In the pursuit of performance, tweaking the ECU is paramount—thus, the Hondata S200 system was the obvious choice for this project, integrating the 3 Bar MAP sensor for reliable boost readings.

Tuned 1998 Acura Integra GS-R
Amee Reehal

A Full-Race intercooler was incorporated, fed by Full-Race aluminum charge piping. A Walbro fuel pump, AEM fuel rail, and AEM pressure regulator were also bolted in, facilitating the RC Engineering 850cc injectors, and while a Hondata heat shield gasket ensured heat reduction, engine breathing was enhanced with a Skunk2 intake manifold.

Tuned 1998 Acura Integra GS-R
Amee Reehal

Both a Full-Race stainless steel 3” down pipe and an equal length exhaust manifold, coupled with a custom 3” cat-back exhaust, managed the air, while a Turbosmart 35mm wastegate kept boost in check. To ensure an efficient ignition setup, STRD opted for the MSD line, including their Digital 6 Plus ignition, Blaster HVC Works ignition coil, distributor cap, and spark plug wiring.

The First Dyno Runs: Triumphs and Failures, Chasing the 500-Horsepower Mark

Tuned 1998 Acura Integra GS-R
Amee Reehal

When it finally came time for the highly anticipated dyno, a variety of setbacks occurred. Managing the project at STRD was Allan Calagui. “Initially, we had a problem with the igniter and had to go back to fix it,” he explains. “Went back the second time and pulled a 300whp and the oil light came on.

Keeping things grounded, an Energy Suspension Engine bushing kit was employed, sharing close company with a set of Neuspeed lowering springs and an AEM big brake kit.

Not taking any chances, we towed the car back and realized the oil pump failed.” However, on the third attempt the car produced an astounding 355whp at 12psi, “And that was on regular 91 octane pump gas” Allan continues. “We tried a 20psi run, but the stock Type R oil pump had failed again. We solved this problem by simply replacing it with a Prodrive competition oil pump gear.”

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Tuned 1998 Acura Integra GS-R
Amee Reehal

Allan concludes, “The wastegate was now maxed out at 20psi, so we are going to replace it with a upgraded spring. We’re going to run at 25-28psi and intend on breaking 500whp.” Despite the current setbacks and as far as anybody is concerned, this is undoubtedly a 450whp-plus beast as it stands today.

Upgrades Beyond the Engine

Jump down to the full spec sheet here.

Tuned 1998 Acura Integra GS-R

Even with some aesthetic touches on the outside, including ViS Racing TSC front and rear bumpers, Z1 Boxter side skirts, an Invader carbon fiber hood, and a couple AC Autotechnic chrome tow hooks, the car holds a strong sense of modesty. Sporting a stock spoiler and retaining the stunning electric blue color that continues to turn heads, the true character of the GS-R is not compromised.

Tuned 1998 Acura Integra GS-R

Nor is the initial mandate of engine management. Taking home the top performance awards at both Sport Compact Nationals-Calgary and ImportShowoff this past year, Colin’s car shows up to collect awards, not put on cosmetic charm.

Interior: Gauges, Gadgets, and Controlled Chaos

Tuned 1998 Acura Integra GS-R
Amee Reehal

The interior, on the other hand, is a raging frenzy of gauges. The familiar Auto Meter attire including fuel pressure, oil pressure, air/fuel, and EGT gauges. Okay, it’s not exactly a “raging frenzy” but let’s stick to the theme of the story. Adding to the interior lunacy is a Greddy turbo timer alongside the Greddy PRofec B boost controller. Not to mention an Alpine CD player, now that’s crazy.

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Footwork and Stance

Tuned 1998 Acura Integra GS-R

Undoubtedly, the rollers had to fit the overall look and feel of this brawny beast. And it did just that, adorning a set of meaty 19” Racing Hart GT5 wheels finished in gun metal and sheathed in Pirelli P7000 215/35/19.  Keeping things grounded, an Energy Suspension Engine bushing kit was employed, sharing close company with a set of Neuspeed lowering springs and an AEM big brake kit.

So, what do the Alberta Prairies, a single case of Mad Cow disease, and a power-hungry car all have in common? Absolutely nothing. But always remember, “In a sane world, madness is the only escape.”

The Full Specs

Engine Modifications

Engine Management

Exterior Mods

Suspension & Footwork

Interior Mods

Shout outs

Amee Reehal
Amee Reehalhttps://www.ameereehal.com/
Shooting cars and bikes since film days. Amee’s work has landed in MotorTrend, GlobeDrive, SuperStreet, and more. He’s the founder/editor of tractionlife.com and former Managing Editor at topspeed.com — blending 25 years behind the lens with over a decade of SEO and digital strategy. Find him traveling, with his family, or golfing… badly.

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