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Category: Tuner Tuesday

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Tuner Tuesday: 1998 BMW M Roadster Dinan S3

Edit 11/3/2017 – I looked at this Dinan modified M Roadster last August, but there was little information and it hung around for quite a while at $25,000. It has now moved on to a new seller who has taken some more photos and raised the price $4,000. After last month claiming it was an ISR3, the seller has confirmed what our comment from Eric indicated – it’s “just” a S3 Roadster. It has about 1,000 more miles since last year but still looks relatively reasonably priced if you like the color combination and gutsy Dinan modifications – Ed

The other day I was talking with my friend about Turner Motorsports. I first met Will Turner when he was a BMWCCA instructor, just trying to establish his business of selling parts on the side. He and his compatriots all sported E30 M3s; this was, after all, the days before the launch of the U.S. E36 M3. Turner managed to parlay early success in a local modification scene outside of Boston into a countrywide business, and after some time in the club race scene he moved into the major leagues. Success against better funded teams was sometimes difficult, but today Turner is still alive and very much kicking, having become one of the two defacto factory-backed teams running the M6 GT3. To get to that point of factory involvement is an arduous journey to say the least, and few who start out make it.

One other who did was Steve Dinan, who took a niche tuning business from the 1980s into a factory option today. You can walk down to your dealer and order up a fully backed, Dinan modified car. That took a tremendous amount of work and is a testament to the quality of the products on offer from Dinan. They truly take the well-engineered BMWs to the next level, but modifying them to do so can be quite pricey. Take today’s M Roadster, for example. While it wasn’t exactly a cheap car to begin with, with entry level prices in 1998 starting around $42,000. This M Roadster, though, went on to get a further $36,000 in modifications from Dinan:

CLICK FOR DETAILS: 1998 BMW M Roadster Dinan S3 on eBay

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Tuner Tuesday Double Take: 2002 and 2003 BMW M5 Dinan S2s

There are a few select automotive tuners who can take an impressive package and refine it into an even better entity. That group includes legends such as AMG, Alpina and Ruf – all of which are staples of this segment.

Yet they are far from alone. Given the task of improving on what is generally considered to be one of the greatest sedans ever made is no small feat, but if there was one group up to it, it was Steve Dinan’s eponymous company in California.

While just about anyone can take a turbocharged engine and crank up the boost, slap a few stickers on it and call it done, the E39 M5 didn’t come with forced induction. On top of that, it was a motor which wasn’t exactly underdeveloped before it went into production. Nor were the brakes, suspension, or any other aspect of the third gen M5. But Dinan thought they could improve upon them, and with a tremendous amount of work, did.

Dinan went to town on the S62 from start to end. Out came the factory air boxes, air meters and velocity stacks, replaced by Dinan units of larger diameter and better flow qualities, along with larger throttle bodies bored out by the company. This necessitated reprogramming of the computer controls for the engine to match the new flow characteristics. To help the exhaust side of the motor, unique tubular headers were fit to a free-flowing, lightweight exhaust system. While this sounds a bit like old-school engineering, it was successful; the result was an additional 76 horsepower and 51 lb.ft of torque – basically, this was like adding a 1980 Rabbit’s worth of power to an already powerful car.

Dinan coupled the engine mods with a shorter final drive and higher rev-limiter to reach fantastic speeds. The S2 was capable of 0-60 runs around 4 seconds flat and, in unrestricted mode, geared out around 190 mph in 6th. These are still very impressive numbers today, some fifteen years after its introduction! Of course, special forged wheels from the company were added along with their signature suspension. The price was steep, at $36,000 in modifications alone – a further 50% premium on your premium sedan.

Today, you can pick up one of these super-saloons for less than what the price of the modifications cost originally making them one heck of a performance bargain, and I have two to consider for today’s Tuner Tuesday:

CLICK FOR DETAILS: 2002 BMW M5 Dinan S2 on eBay

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First Dimension: 1978 Volkswagen Scirocco Callaway Turbo

There aren’t too many period-correct tuned Volkswagens that we get to see. Those that do turn up are usually home-brewed, and consequently usually aren’t built to a high standard.

Today’s is something special, though.

Finding a clean first generation Scirocco is difficult enough. This one also happens to be one of the limited Champagne Edition cars, though you’d not know it unless I told you so, because so little of the original outside of the silhouette remains. From top to bottom, this Scirocco has been through a whirlwind of changes. But this car is far from a garage project, as some of the more legendary VW tuners in the U.S. had their hands on it since it was close to new. This car was the original test bed for the Santa Clara speed shop New Dimensions, and features some of the best items you could source. New Dimensions bought the production rights and experience of Callaway Turbo Systems in the mid 1980s, and continued to offer turbocharging for Volkswagens into the early 2000s. The result, after a painstaking period of rebuilding it, is a nearly flawless execution and one of the best tuned VW 2-doors out there:

CLICK FOR DETAILS: 1978 Volkswagen Scirocco Callaway Turbo on eBay

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