It began as all stories do . . . with fuel injection
Honda's Si sub-brand first touched its tires to U.S. soil 30 years ago, but in that relatively short time has built a rabid following. While not as focused on balls-out horsepower as, say, BMW M or Mercedes-AMG, Honda's Si vehicles nonetheless carved their own impressive path to enthusiast hearts with smooth, high-revving engines; slick gearboxes; and sharp driving dynamics. Over the years, no Si-badged Honda has done us wrong, even if their engines' redlines have fallen from the peaky heights reached in the early 2000s. The Si name is an acronym for "sport injection," Honda's trumped-up term for fuel injection. In the mid-1980s, most Hondas were still carbureted, and fuel injection gave the Si cars the extra power needed to set them apart. The first Si-badged Hondas to arrive in the U.S. were the CRX and the Prelude in 1985, followed shortly after by a Civic. Over the years, Honda built Si variants of the del Sol and even the Civic sedan, but it never has assembled an Accord Si (we're still holding our breath!) or expand the Si treatment to any of its SUVs such as the CR-V (we're not so much holding our breath for these). Enjoy this brief history of Honda Si models sold in the U.S., but be careful—your device is about to hit VTEC, yo.
1985 Honda Prelude Si
The Prelude Si was one of the first two Si models to go on sale in the U.S., and what an introduction to the badge. The second-generation Prelude is still one of the more-attractive cars of the 1980s, and when Honda stuffed a fuel-injected 2.0-liter four-cylinder under its low-slung hood, things went from good to great.
1986 Honda Civic Si hatchback
Honda sold a Civic S in 1985, but it was transformed into a proper Si for 1986 thanks largely to the addition of fuel injection.
1986 Honda CRX Si
Introduced for 1985, the CRX Si came with a fuel-injected 1.5-liter four-cylinder and a five-speed manual. Output stood at a peppy 91 horsepower and 93 lb-ft of torque; it doesn't sound like much, but the car weighed just 1840 pounds and the regular CRX pushed out just 76 ponies and 84 lb-ft. The suspension was the same as on normal CRX's—hardly a demerit, given how fun to drive it already was. In our original CRX 1.5Si test, we hit 60 mph in 9.1 seconds, a 1.3-second improvement over the non-Si car. Top speed similarly improved, from 103 mph to 112.
1986 Honda CRX Si
Here is the CRX Si floating in green space. Old manufacturer press photos are just the best.
1986 Honda Prelude Si
There were no major changes to the Prelude Si for 1986, but this is a good view of the coupe's slick proportions and clipped tail.
1986 Honda Prelude Si
1987 Honda CRX Si
No big updates to the CRX Si for '87, but the nuclear background and traffic cones are pretty rad, no?
1988 Honda CRX Si
As charming as the first-generation CRX was, the second-generation model adopted smoother, more-attractive styling. And an Si variant was included from the get-go. An all-new, all-aluminum 1.6-liter four-cylinder bumped power from 91 horsepower to 105 and again came mated exclusively to a five-speed manual transmission. For the first time, the CRX Si's suspension differed from that on regular CRXs, with stiffer dampers, a larger front anti-roll bar, and a rear anti-roll bar (the stock CRX did without a rear bar). In 1988, the term "sporty" was apparently loose enough to include five-inch-wide, 14-inch aluminum wheels. The Si's 185/60-14 tires were also the "sportiest in the Civic line."
1988 Honda CRX Si
One notable feature Honda added to every CRX for 1988? The little vertical half window in the liftgate. It was tinted more darkly than the other windows so as to appear to be part of the hatch.
1988 Honda Prelude Si
Like the CRX and the Civic, the Prelude coupe was redesigned for 1988. The Si model returned with a fuel-injected 2.0-liter four-cylinder engine making 135 horsepower and 127 lb-ft of torque.
1988 Honda Prelude Si
Performance—and the aural signature of the engine—was aided by a dual-stage intake manifold, while Michelin 195/60-14 rubber wrapped around standard steel or optional aluminum wheels. An intriguing four-wheel steering system was optional. (No, it wasn't called P-AWS—Precision All-Wheel Steering—like Acura's similar system of today.) At low speeds, the rear wheels would turn against the fronts up to 5 degrees; at higher speeds, the rear wheels turned with the fronts to enhance stability.
1989 Honda CRX Si
The CRX Si enters 1989 with no changes, although Honda's quoted output for the 1.6-liter four rose by 3 horsepower to 108.
1989 Honda CRX Si
1990 Honda Civic Si hatchback
Honda actually introduced this generation Civic Si in 1989, a year after the fourth-generation Civic debuted in the U.S. The entire Civic line—including the CRX—shared a similar front-end treatment with an exceptionally low hood, slim headlights, and cleanly styled sheetmetal. For the Si, Honda fitted the same aluminum, 16-valve SOHC 1.6-liter four-cylinder engine found in the CRX Si. Here, the engine made 108 horsepower.
1990 Honda Civic Si hatchback
Once again, the Civic Si was available only in the hatchback body style.
1990 Honda Civic Si hatchback
A power sunroof highlighted the Si's standard-equipment list. This being 1990, a sporty car was allowed to wear steel wheels with hubcaps.
1990 Honda CRX Si
1990 Honda Prelude Si
1990 Honda Prelude Si 4WS
Prelude Si models equipped with the optional four-wheel steering system were top-of-the-line in 1990 and came more or less fully loaded with aluminum wheels and a rear spoiler with an LED-lit center brake light.
1990 Honda Prelude Si 4WS
If the windows of this Prelude Si 4WS look brownish, congratulations, your vision is sharp. The four-wheel-steering package included bronze-tinted glass, as well as power door locks. No, we aren't sure what those two options had to do with one another, either.
1990 Honda Prelude Si 4WS
This shows just how aggressively the Prelude Si 4WS rear wheels could turn against the fronts. The system was entirely mechanical; an extra pinion gear in the front steering box turned a long shaft that ran to a second steering rack on the rear axle. A complex planetary gearset separated subtle steering inputs from aggressive ones. At any speed, if the driver delivered between 0 and 140 degrees of steering input, the rear wheels steered with the fronts up to 1.5 degrees. Inputs above 140 degrees gradually returned the rear wheels to straight, and when the driver's input reached 246 degrees, the rear wheels were realigned with the fronts with 0 degrees of toe. Past 246 degrees, the rear wheels turned against the fronts up to a maximum of 5.3 degrees. Complicated? You bet, but given how many actuators and electronics modern four-wheel-steering systems require, Honda's system was elegantly streamlined—and downright insane in 1989.
1992 Honda Civic Si hatchback
For 1992, the Civic lineup was redesigned with a doughy, rounded body and more-modern underhood technology. Fuel injection became standard across the Civic line, meaning Honda had to give the Si hatch a few new tricks to keep it ahead of the pack. These tricks took the form of variable intake-valve timing and lift (VTEC). At lower engine speeds, the timing and valve lift was mild for better torque; at higher engine speeds (5000–5500 rpm), it switched to a profile that opened the intake valves sooner and kept them open longer for more outright power. The result? The Si's 1.6-liter four produced 125 horsepower and 106 lb-ft of torque and was EPA-rated for 29 mpg in the city and 36 mpg on the highway. Oh, and the Si still made do with humble steelies with hubcaps, because awesome.
1993 Honda Civic del Sol Si
With the CRX dead and gone, apparently someone at Honda felt the need to still offer a two-seat, Civic-based thing—and thus was born the del Sol targa-roof roadster. Right away, there was an Si version, which got the same 125-hp VTEC-equipped 1.6-liter four found in the 1992 Civic Si.
1993 Honda Civic del Sol Si
The del Sol's central roof panel could be lifted off and stowed in the trunk for open-air motoring. Every del Sol came with power windows—including a power-sliding rear window.
1993 Honda Civic del Sol Si
In addition to the hot engine, del Sol Si variants also got four-wheel disc brakes, standard power steering, and 14-inch aluminum wheels in place of the standard model's steelies.
1993 Honda Prelude Si 4WS
Also new for 1993 was a redesigned Prelude, and along with it, a fresh Prelude Si with 160 horsepower and 156 lb-ft of torque from a 2.3-liter four-cylinder.
1993 Honda Prelude Si
Interestingly, Honda offered a Prelude above the Si dubbed "Prelude VTEC," and gave it a 190-hp 2.2-liter four.
1994 Honda Prelude Si
Once again, Honda made four-wheel steering an option on the Prelude Si. The new system was electronically controlled and speed-dependent; above 19 mph, the rear wheels steered with the fronts. Below 19 mph, they turned against the fronts.
2000 Honda Civic Si coupe
After a long hiatus, the Si badge was once again affixed to the tail of a Civic. This time, Honda chose the coupe body as the base and turned up the wick on its performance.
2000 Honda Civic Si coupe
In addition to stiffer springs, dampers, and anti-roll bars, as well as larger front brake rotors, Honda blessed the Civic Si with a screamer of a four-cylinder engine.
2000 Honda Civic Si coupe
The Si's 1.6-liter DOHC four redlined at 8000 rpm and put out 160 horsepower and 111 lb-ft of torque. As with previous Si models, it needed to be revved for max haste. That, of course, was hardly a problem—zinging the little four-banger past the VTEC (variable valve timing and lift) system's low-speed cam profile resulted in a wonderful engine sound.
2000 Honda Civic Si coupe
If you needed any more proof that the 2000 Civic Si was a focused driving machine, Honda offered just three colors: Flamenco Black, Electron Blue, and this Milano Red hue.
2003 Honda Civic Si hatchback
The 2003 Civic Si hatchback is one of the breed's more bizarre members. That's because unlike every Civic Si before or since, it didn't have an equivalent non-Si version. While Honda also sold its sixth-generation Civic in non-Si coupe and sedan body styles, the Si was a three-door borrowed from Europe.
2003 Honda Civic Si hatchback
It may have been borrowed goods, but the Si had several things going for it, starting with torque. The 2003 model featured a bigger 2.0-liter engine that produced 132 lb-ft of twist—21 more than the older Si's 1.6-liter four. The two engines produced the same 160 horsepower. Performance was good—0-to-60 mph took eight seconds flat—but with a lower redline, this Si felt less "zingy" than its predecessor.
2003 Honda Civic Si hatchback
One of this Civic Si's most unusual features was its dashboard-mounted shift lever. It might look strange, but its placement was near-perfect: It was just a short reach from the steering wheel, and it operated with the same tight smoothness we'd come to expect from Honda gearboxes.
2003 Honda Civic Si hatchback
A closer look at the rally-style shifter.
2006 Honda Civic Si coupe
After the 2003 Si was met with tepid interest, Honda brought back the coupe body style for 2006 when the Civic line was again redesigned. Honda also brought back the 2000–2001 model's racy, high-revving nature.
2006 Honda Civic Si coupe
Power came from a 2.0-liter DOHC four-cylinder with a redline well north of 7000 rpm. In fact, its 197 peak horsepower arrived at 7800 rpm—and there was still a usable 139 lb-ft of torque down low.
2006 Honda Civic Si coupe
With its rev groove back, the Civic Si was, once again, a shrieker. In its first comparison test, it posted a 6.7-second 0–60 run, just one tenth of a second behind its foe, the turbocharged Volkswagen GTI.
2006 Honda Civic Si coupe
This generation of Civic Si was offered initially only in two-door form, but that would change the very next year.
2007 Honda Civic Si sedan
Wave hello to Honda's first-ever Civic Si sedan. It married the contemporary Civic Si coupe's hot running gear to the Civic's four-door body to good effect.
2007 Honda Civic Si sedan
Thanks to this Civic generation's sleek, spaceship-like design, the Si sedan didn't give up much in the way of aesthetics to the coupe variant.
2007 Honda Civic Si sedan
2008 Honda Civic Si sedan Mugen Edition
You'd be forgiven for thinking this was just some schmoe's used (and modified) Civic Si sedan, but it isn't. Longtime Honda tuner Mugen collaborated on this special-edition Civic Si sedan, generating a four-door with a noticeable body kit, 18-inch GP wheels, an upgraded suspension, and a freer-flowing exhaust.
2008 Honda Civic Si sedan Mugen Edition
Oh, and it got a giant wing, too.
2012 Honda Civic Si coupe
Ah, 2012—this was a tumultuous time for the Honda Civic. The redesigned regular models debuted to atypically "meh" reviews, and when the compact failed to earn a "recommended" rating from Consumer Reports for the first time in decades, Honda immediately went back to the drawing board. This 2012 Civic Si met a similarly cool reception from enthusiasts.
2012 Honda Civic Si coupe
In a world quickly proliferating with turbocharged hot hatchbacks, the Civic Si's naturally aspirated engine suddenly began to seem outclassed. As they had done in 2003, Honda fans once again faced down a lowered redline—now just 7000 rpm. In fact, the new model featured the torquiest engine ever fitted to a Civic Si, with 170 lb-ft on tap from 4400 rpm. Peak horsepower rose by just 4 ponies to 201. Performance improved, however, with the trip to 60 taking just 6.3 seconds in our first test.
2012 Honda Civic Si sedan
The Civic Si sedan was a part of the lineup from the beginning this time around.
2012 Honda Civic Si sedan
The Civic Si sedan was even quicker than the Si coupe we tested, running to 60 mph in 6.1 seconds. As before, everything about the sedan save for its number of doors was the same as on the coupe.
2012 Honda Civic Si sedan
Even though Honda first introduced the oddball dual-tiered dashboard theme to the Civic in 2006, it expounded on the idea with the 2012 models. The Si versions received red-hued backlighting—and a tach with an appropriately higher redline.
2014 Honda Civic Si sedan
Remember that whole bit about the 2012 Civic getting a chilly critical response? Well, Honda brought out a revamped sedan and coupe in record time just one year later for 2013. The Si variants needed to wait another year beyond that, however, to receive the updates. While mechanically not much was changed, the new Civic Si did get mildly tweaked styling front and rear—and the sedan got a big wing.
2014 Honda Civic Si sedan
Notice a similarity between the refreshed Si's wheel design . . . and that of the 2015 Volkswagen GTI?
2014 Honda Civic Si sedan
Honda upgraded the 2014 Civic Si's interior with nicer materials, including a soft-touch dashboard and a new red-over-black color scheme.
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