Emerald M3D LTD

Emerald M3D LTD Standalone Engine Management He is currently Technical Editor at Practical Performance Car magazine and a regular contributor to Track Driver Magazine.

We are the creators and manufacturers of aftermarket standalone K6 ECU (Engine Control Unit) or EMS (Engine Management System) with over 17 years of experience in automotive electronics, engine management and calibration as a company. Founder of Emerald M3D Ltd is Dave Walker, well known in the UK for his many articles and features in various motorsport publications and huge experience in engine m

anagement, Dave has now celebrated 50 years in the automotive industry. Our aim is to provide user-friendly, capable and reliable engine management systems with 1st-class back-up and technical assistance – whilst at the same time not costing the earth. Emerald engine management systems are capable of handling full 3D mapping of both ignition and injection on most normally aspirated and turbo engines – from classics through to the latest engine designs. Emerald systems are both straight-forward and logical to use and many of the "big" features found in competitor systems are included as standard in Emerald’s ECU’s. Work is always ongoing to add more features and functionality to cater for the ever-growing diversity of engines and customer requirements. Future developments will include adding new features to the K6 ECU as well as expanding the product range and further enhancement of on-site and over-seas facilities and support in addition to our already extensive base of dealers in different parts of the world.

A reasonably rare sight in its day, and even rarer now, is the MK4 Es**rt van. The most exciting engine you could get in...
11/08/2026

A reasonably rare sight in its day, and even rarer now, is the MK4 Es**rt van. The most exciting engine you could get in any form of MK4 was the RS Turbo’s 1600 turbo CVH, producing around 130bhp. Add to that the change to FWD with the MK3 and it just wasn’t going to cut it for this customer.

Luckily, there’s a straightforward fix. Cut out the undesirables of the Es**rt and put the running gear of a Mazda MX-5 in its place, then add boost for good measure.

Obviously this is no easy feat and to see a huge project like this finished to such a high standard is a real treat. The engine is a 1.6 BP, fully built to withstand the bump in power courtesy of the Garrett - Advancing Motion G25-700 turbo. Oversized? - perhaps, but the benefits of running a larger modern turbo come in efficiency. Low exhaust manifold pressure and almost ambient intake temps allow the engine to run close to MBT on 99 and still have plenty of safety margin. Pushing big boost wasn’t the goal, and there was no need to, making an effortless 370bhp.

Unfortunately the car isn’t currently on the road so will be seeing track day and drag use exclusively until then, although we suspect some modification to the exhaust will be necessary to pass those ever-tightening noise regs!

29/06/2026

Some of you will know or know of Emerald M3D LTD and Dave Walker.

I always enjoy my visits to service and calibrate their MSR 1000, always plenty of good tea and great conversation.

In-fact when our founder Winfried Rauch, had a spare afternoon, he asked me to “take me somewhere interesting”, I took him to meet the guys at Emerald and they instantly got on, so much so we spent the entire afternoon there, chatting debating and getting along like old friends, (Dave and Karl bought an LPS in the early 1990’s)! Anyway, whilst chatting with Dave yesterday we were talking about his articles in Car and Car Conversation and later in Practical Performance Car magazine and he informed me he is now a “YouTuber”!

Take a look, if you like what you see give him a like and a follow.

https://youtu.be/rRKSaoNyypY?is=WqU1i4WWxHkRsWjQ

29/06/2026

Another racing legend in last week, this time a 90’s era Marcos LM500. These are powered by the infamous Rover V8, which made them a bit of an underdog in the day, but you can’t argue with that sound! This example is kept in race ready condition to this day and will be competing in the Le Mans classic this year. We look forward to seeing it in action!

16/06/2026

Last week brought some excitement in the form of the iconic Audi Quattro, this one being built as a tribute to the 1981 Gr.4 car driven by Hannu Mikkola. We get a vast array of cars through the doors here at Emerald, but this was something special.

Sporting the factory (albeit well fettled) 2.1l 5 pot, the car put down good power. Gearbox strength meant that we were torque limited, as without the support of a factory team Andy has little interest in changing it after every stage. The key here was getting the engine on boost quick and holding the torque safely below our limit for as long as possible through the rev range.

By the end of the day we’d made some good gains with a few simple changes and greatly improved the low speed drivability, which is very important on a rally car as they spend a lot of time driving from stage to stage. And yes, this does get used!

We hope you enjoy watching and listening to these clips, although they hardly do it justice.

Luke brought his supercharged S2000 back to us last week for a tweak after he fitted a new exhaust and began suffering a...
15/04/2026

Luke brought his supercharged S2000 back to us last week for a tweak after he fitted a new exhaust and began suffering a misfire.

Pretty soon we discovered that although the exhaust had gained us some power and thus made the car run lean at WOT, this was not the cause of the misfire. The oil seal on cylinder 4 had slipped off and allowed the plug hole to fill with oil! A quick and easy fix.

After a bit of optimisation we ended up at 389bhp, carrying the power all the way to 9k whereas it had previously choked up above 8k. This car has a JDM high comp engine fitted and was heavily knock limited, with some high octane fuel it’d be well north of 400bhp!

17/02/2026

Last week this flawlessly prepared Mini competition car was brought to us for a tweak after a decrease in valve size. The car uses the popular BMW K1200 head swap to extract every last horsepower out of the little A Series. Whilst we had it we also set up the flat-shifting feature available within our K6+ ECU’s, which the customer is looking forward to testing on track!

The move from the oversized valves it ran last year back to standard valves was purely due to parts availability, and given the relatively small performance hit, it’s a no brainer to reduce mid-season down time.

We thought we’d give a little snapshot of some of the interesting cars we’ve had on the rollers over the past few months...
26/08/2025

We thought we’d give a little snapshot of some of the interesting cars we’ve had on the rollers over the past few months, some more successful than others, in no particular order:

A fantastically finished TVR Cerbera with the flat plane crank AJP engine, although unfortunately this one was rather short lived! It came in for an ECU fit & map but after doing a quick ‘before’ power run on the factory management it started pouring white smoke out, a suspected head gasket failure👎.

Next is a little Alfa Romeo Giulia, it had visited us 18 months prior but made disappointing numbers due to having the VVT unit removed and the cams being left at standard timing. It came back to us once this was refitted and with a bit of wiring and a remap we’d picked up 30lbft across the entire rev range, probably the cheapest 40bhp he’ll ever get!

Then a Porsche 911 3.2 from with an ITB conversion courtesy of . This was one of those rare jobs where there were no problems and we could focus on getting a nice result without any dramas! An especially uncommon event for a Porsche😉.

Another well presented car was a MK2 Golf with the ever popular 1.8T swap. We ran into some potential issues with the actuator which limited the power it could make, but having spent all day chasing various other issues (note the darkness outside the workshop, this was in July!) we decided to leave it for another day. We still got around 240bhp which should be more than enough to enjoy over the summer.

And last but not least was a Ford Capri with the early 70’s style widebody kit, reminiscent of the old touring cars. Laying beneath is the 2.9 BOB engine, the 1.8T of the retro Ford world! Here we had another case of factory fitted parts being removed without the necessary modifications, in this case it was the variable inlet ‘VIS’ unit fitted to the BOB engines. These are crucial for top end power, without it you get a steep drop off in torque from around 4500 onwards and a horrible shaped curve, the owner wasn’t too bothered about peak power figures but we hope to gain another 15-20bhp upon it’s return with the valve refitted.

We were digging through some old stock this morning and found some unused Jenvey manifolds, two new old stock and one re...
23/05/2025

We were digging through some old stock this morning and found some unused Jenvey manifolds, two new old stock and one returned order. To clear up space we’re selling them off for a discounted price, descriptions can be seen in the photos with more information available on Jenvey’s website. If you’re interested in any of them get in contact via email or send us a message on Instagram or Facebook!

1. Peugeot TU5 1.6 16v to suit ST single throttle bodies £200+VAT (New, unused)

2. Honda B16/B18 C5 to suit SF single throttle bodies, includes fuel rail £200+VAT (New, unused)

3. SR20VE to suit SF single throttle bodies £180+VAT (Returned order, possibly fitted but not used, few cosmetic marks but no damage)

Prices do not include shipping.

Two lovely Sierra 4x4s in recently, both turbocharged!The first had some issues with building boost, as you can see in t...
16/05/2025

Two lovely Sierra 4x4s in recently, both turbocharged!

The first had some issues with building boost, as you can see in the torque curve, it was very slow to come on. We did all the usual checks for boost leaks, stuck open wastegates etc but couldn’t find anything. In the end we put it down to the ebay special turbos but it still made decent power at 284bhp and 295lbft, more than enough to give some unsuspecting fiestas a run for their money.

The second one was a bit more lively, running some hybrid turbos on slightly higher boost pressure. Unfortunately it left on the back of a trailer about a mile up the road after a ‘spirited’ test drive knocked loose the fuel pump inside the tank, but is now back up and running and being thoroughly enjoyed.

Had a bit of a rarity on the rollers last month in the form of this B3 Passat. The customer bought the car already conve...
16/05/2025

Had a bit of a rarity on the rollers last month in the form of this B3 Passat. The customer bought the car already converted to the ever popular 20v 1.8T but had some running issues, along with upgrading to a larger turbo.

Unfortunately a fuel supply issue cut the day short but we’re looking forward to seeing it back soon to have the mapping finalised and make some power!

Address

Unit 6 Norwich Road Industrial Estate
Watton
IP256DR

Opening Hours

Monday 9am - 5:30pm
Tuesday 9am - 5:30pm
Wednesday 9am - 5:30pm
Thursday 9am - 5:30pm
Friday 9am - 5:30pm

Telephone

+441953889110

Website

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