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Zetec Bike Throttle Body Kit: How to Spec, Size and Fit One That Actually Performs
GSXR or ZX-10R bodies on a Zetec? Get the engine family, bore size and spacing right for 165–170 bhp — and dodge the flat-spot mistakes. Full build guide inside.
Ford Duratec Intake Manifold: OEM Weak Points, Plenum Swaps and ITB Kits Explained
Ford Duratec intake manifold explained: fix the rattling swirl flaps, pick the right plenum or ITB kit, and get the exact port and flange specs. Read before you buy.
Bike Carbs vs ITB Conversion Cost: The Honest Numbers for a UK Build
Bike carbs vs ITB conversion cost, broken down for real: hardware, ECU, fuel system and mapping figures — and which route actually costs less. See the numbers.
Ford Duratec Bike Carburettor Conversion Kit: How to Spec, Fit and Jet One Properly
Spec, fit and jet a Ford Duratec bike carburettor conversion kit properly — carb sizing, 2–3psi fuel, crank-trigger ignition and the jetting that saves your engine.
Billet Fuel Rail for ITBs: How to Spec, Size and Fit One That Actually Seals
The exact injector O-ring sizes, bore, fittings and return-vs-dead-head rules to spec a billet fuel rail for ITBs that seals and never leaks. Get it right first time.
Zetec Bike Carburettor Conversion Kit: How to Spec, Fit and Jet One Properly
Spec a Zetec bike carburettor conversion kit that runs clean: right carbs, fuel pressure, jetting and up to 175bhp — plus the 3 mistakes that flood it. Read this first.
ITB Kit + Airbox Combination: How to Get the Two Working Together
Sizing, clearances and filtration for an ITB kit airbox combination that gains power instead of losing 18 bhp. Real dyno numbers and specs inside.
Zetec ITB Kit: How to Choose, Size and Tune Individual Throttle Bodies That Actually Fit
Choose a Zetec ITB kit that actually fits: 45mm vs 48mm sizing, Silvertop/Blacktop fitment, injectors, ECU and real power figures. Order once, fit once.
Vauxhall XE Throttle Body Kit: How to Spec, Size and Fit One That Actually Delivers
Spec a Vauxhall XE throttle body kit that actually delivers: correct 45mm vs 48mm sizing, FWD angle, fuelling and ECU choices for a genuine 200 bhp. Read this first.
Ford Duratec Bike Throttle Body Kit: The Complete Engineering Guide to Fit, Sizing and Power
Get ~180 bhp from a Duratec bike throttle body kit done right — real bore sizes, sizing rules, trumpet gains and the ST170 fitment trap that catches builders out.
Ford Duratec ITB Kit: How to Choose, Size and Tune One That Actually Works
Choose the right Ford Duratec ITB kit: bore sizing to your bhp, DTH vs manifold, ECU/Alpha-N tuning and the fitting mistakes to avoid. Read before you buy.
OEM ECU Calibration Service: What Actually Gets Changed, and How It's Done Safely
Exactly what an OEM ECU calibration service changes, realistic petrol vs diesel gains, Bosch MG1/MD1 locks and how to avoid a bricked ECU. Read before you book.
K20 Individual Throttle Bodies: How to Spec, Fit and Tune Them Properly
The exact plate size, trumpet length and ECU strategy K20 individual throttle bodies actually need — with real specs and the fitment traps to avoid. Read this first.
K20 ITB: How to Spec, Fit and Tune Individual Throttle Bodies That Actually Deliver
The honest K20 ITB guide: correct throttle sizing, runner length, Alpha-N tuning and the cooling pitfalls that catch people out. Spec it right before you buy.
Performance Engine Pistons: How to Choose 4032 vs 2618, Clearances and Ring Packs That Survive
Choosing performance engine pistons? Get the 4032 vs 2618 decision right, plus real clearances, coatings and ring packs that survive. Build it properly.
TU5 Intake Manifold Upgrade: The Real Power Ceiling (And Why 1500 HP Is a Myth)
Let’s deal with the number in the search box first, because it changes the whole conversation. A TU5 is a 1.6-litre four-cylinder. Asking it for 1,500 hp is asking for roughly 940 hp per litre — territory occupied by purpose-built F1 and top-tier drag powerplants with billet blocks, dry-decked close
ITB Airbox Sizing, Backplate Clearance and Fitment
An ITB airbox does two jobs at once, and most people only think about one of them. The obvious job is filtration and ducting cold air to the trumpet mouths. The less obvious — and more important — job is acoustic: the flat front face of the box sits a controlled distance from the trumpet mouths and becomes part of the induction length the engine sees.
Subaru EJ Intake Manifold: What Actually Limits Your Boxer’s Airflow
On a forced-induction EJ, the intake manifold usually becomes the quiet ceiling somewhere around 400 wheel horsepower. Below that, the factory plenum, runners and TGV housings are rarely the thing holding you back — turbo sizing, fuelling and calibration dominate. Above it, restrictions in runner di
K20 Airbox Carbon: How to Build an Enclosed Induction System That Actually Lowers Intake Temps
A carbon airbox and a carbon intake manifold are not the same part, and confusing the two is the first mistake most people make when they type “k20 airbox carbon” into a search bar. The airbox is the enclosure around the filter on the induction side, before the throttle body. The intake manifold sit
High Performance Automotive Engineering: How the Details Actually Make Power, Grip and Repeatability
High performance automotive engineering is the discipline of making every subsystem — intake, forced induction, aerodynamics, suspension geometry and chassis structure — work together as a measured, repeatable whole rather than a collection of impressive-sounding parts. The engines that survive a se
Club Racing Engine Parts UK: How to Build a Legal, Repeatable Engine That Finishes Races
Before you buy a single part, read the regulations for your championship. In UK club racing the technical envelope is defined by Motorsport UK, the FIA-recognised national governing body for four-wheel motorsport, and its rules live in the National Competition Rules — the document the trade still ca
Prototype Engineering in Motorsport: How a Part Actually Goes From CAD to a Component That Survives the Car
Prototype engineering in motorsport is the disciplined loop of design, simulation, manufacture and validation that turns an idea into a part you can bolt to a running car with confidence. It is not “make one and see”. Every stage exists to remove uncertainty before you commit to expensive tooling or
Performance Injectors for the Honda K20: A Sizing and Selection Guide That Won’t Waste Your Money
Get the injector too small and you run out of fuel at the top of the rev range, lean out and hurt the engine; get it too big and idle quality, low-load metering and cold-start driveability all suffer because the injector spends its life at pulse widths it was never designed to control accurately. So
Race Fuel Injectors and ITBs: How to Size, Position and Plumb Them Properly
On an individual throttle body engine, the injector position matters as much as the injector flow rate — and most fuelling problems on ITB builds are packaging and placement problems, not sizing problems. Because the throttle plate sits within roughly 120mm of the valve, the air has a very short dis
Velocity Stacks in Carbon Fibre: What Actually Makes Power, and What Just Looks Good
The radius of the bellmouth on a set of velocity stacks in carbon fibre does more for airflow than the material ever will. A properly formed entry radius — around 1/4 of the bore diameter — lets air turn into the trumpet without separating from the wall, and that clean attachment is worth several pe
DDM Carbon Composite Parts for Motorsport: What Actually Survives, and How They’re Really Made
DDM carbon composite parts for motorsport succeed or fail on three measurable things: fibre orientation, cure schedule and tooling accuracy. Get those right and a component survives 140°C under-bonnet soak, engine harmonics and repeated heat cycling. Get them wrong and the finish is irrelevant — the
Bespoke Carbon Parts for Your Engine in the UK: What Actually Survives Under the Bonnet
Search for bespoke carbon parts engine UK and you’ll find plenty of shiny weave and very little engineering. I’ve spent enough time at the sharp end of motorsport to know that a pretty part which softens at 120 °C or feeds the engine unevenly is worse than useless — it’s a liability you paid a premi
Carbon Composite Airbox for the K20: How to Get One That Actually Feeds the Engine
I’ve lost count of the number of K20 builds I’ve seen running individual throttle bodies with four little sock filters poking out into the engine bay, then wondering why the dyno graph doesn’t match the hype. Here’s the blunt truth: on a serious K-series build, the carbon composite airbox isn’t an a
Peugeot TU Individual Throttle Bodies: How to Pick a Kit That Fits and Makes Real Power
If you’re searching for peugeot tu individual throttle bodies, you’ve already worked out the obvious truth: the standard injection or carb setup on a TU is the single biggest restriction between the air filter and the valve seats. I’m Graham Martin, and I’ve spent enough time on TU-engined cars — Sa
Throttle Body Linkage Kit: How to Get the Actuation Right for ITBs and Single Bodies
Get the throttle bodies right and then bodge the actuation, and you’ve wasted your money. I see it constantly: a beautifully machined set of ITBs let down by a throttle body linkage kit that binds, opens the blades out of sync, or gives the driver no resolution off idle. The linkage is the interface
Motorsport Engine Builder UK: What Actually Separates a Built Engine From a Bodged One
Ask ten people what a motorsport engine builder UK customers can trust actually does, and you’ll get ten answers — most of them wrong. “Blueprinting”, “race spec”, “fully rebuilt”: these phrases get thrown around by anyone with a torque wrench and a rolling road. I’m Graham Martin, and I’ve spent my
Throttle Bodies for Kit Cars: How to Choose a Set That Actually Fits and Performs
Kit cars are where individual throttle bodies belong. You’ve usually got a clean sheet: an engine dropped into a light chassis, no factory airbox to work around, and an owner who cares about how the thing drives rather than how quietly it idles at a set of traffic lights. That’s the ideal case for a
Race Engine Calibration Service in the UK: How Proper Mapping Actually Works
Every week I get engines through the door at Northampton that have been “mapped” already. Uprated cams, a ported head, ITBs bolted on, and a generic file flashed in to suit. On paper it runs. On the dyno it tells a very different story — fuelling all over the place under transient throttle, ignition
ITB Throttle Linkage for Honda K20: Getting the Actuation Right
Get the throttle bodies right and the linkage wrong, and you’ve built a set of ITBs that fights you every time you touch the pedal. I see it constantly. People obsess over bore size and airhorn length, then bolt on a linkage that’s out of sync, badly geared or mounted where it fouls the bay […]
Made to Fit Throttle Body Kit: Why Engine-Specific Beats Universal Every Time
I’ll say it plainly, because someone needs to: a “universal fit” set of individual throttle bodies is a compromise dressed up as a product. If you want the response, the driveability and the peak power your engine is actually capable of, you need a made to fit throttle body kit — one engineered arou
High Performance Engine Components UK: A Builder’s Guide to Pistons, Rods and Cranks
If you’re sourcing high performance engine components in the UK, the hard part isn’t finding parts — it’s finding the right parts for your combination, then having them fit and behave the way the spec sheet promised. I’ve spent enough years at the sharp end of motorsport to know that most failures a
High Performance Engine Components UK: A Builder’s Guide to Pistons, Rods and Cranks
If you’re sourcing high performance engine components in the UK, the hard part isn’t finding parts — it’s finding the right parts for your combination, then having them fit and behave the way the spec sheet promised. I’ve spent enough years at the sharp end of motorsport to know that most failures a
GTI6 Individual Throttle Bodies: How to Get Real Power from an XU10J4RS
The Peugeot 306 GTI-6 is one of those cars that flatters its own induction system. From the factory the XU10J4RS gives you 167bhp at 6500rpm and 145 lb/ft at 5500rpm — a genuinely well-engineered 2.0-litre, 16-valve unit with a square 86mm bore and 86mm stroke, a 10.8:1 compression ratio and a rewor
Aftermarket ECU Tuning Specialist: What Actually Gets Changed, and How to Choose One
I get asked the same question most weeks: “Can you just remap it?” The honest answer is that a good map is the easy part — knowing what to change, how to access the ECU properly, and how to make the result repeatable on real fuel in real conditions is what separates a competent aftermarket […]
Engine Calibration Specialist in Northampton: How GMR Tunes for Real, Repeatable Power
If you’re searching for an engine calibration specialist in Northampton, you’ve usually reached a point where “near enough” no longer cuts it. Maybe you’ve changed the intake, fitted a built bottom end, or you’re commissioning a competition engine and you want the map to actually match the hardware
K20 Individual Throttle Bodies for Sale: How to Choose a Kit That Actually Fits and Performs
Search “k20 individual throttle bodies for sale” and you’ll find plenty of kits, plenty of marketing, and very little straight talk about what actually matters once the parts are bolted to your head. I’m Graham Martin, and I build and calibrate this stuff for a living. So let me cut through it: ITBs
Peugeot XU Throttle Bodies: How to Choose a Kit That Fits Your Head and Makes Real Power
If you’re searching for Peugeot XU throttle bodies, you’ve already worked out that the factory inlet on a 205 GTI, 405 Mi16 or 306 GTI-6 is the single biggest restriction holding the engine back. I’m Graham Martin, and I’ve spent years building and calibrating XU and TU-based race engines. The good
Subaru EJ20 ITB Kit: What Actually Works on a Boxer Engine
I get asked about a Subaru EJ20 ITB kit more than almost any other boxer enquiry, and the conversation usually needs a hard reset before we even talk parts. Individual throttle bodies are one of the most effective induction upgrades you can make to the right engine — and one of the most expensive mi
Bespoke Race Engine Manufacture: How a Properly Built Unit Is Actually Made
Ask ten companies about bespoke race engine manufacture and you’ll get ten different answers, most of them dressed up with the word “blueprinting” and very little measurement behind it. I’ll be blunt: a lot of what gets sold as a blueprinted engine has simply been built — assembled within the factor
Carbon Intake Manifold for a Race Engine: What Actually Works
Ask ten people what a carbon intake manifold race engine setup buys you and you’ll get ten different answers — most of them lifted straight from a product listing. So let me cut through it. I’m Graham Martin, and I design and build these parts in Northampton for race teams, engine builders and serio
ECU Calibration for Motorsport in the UK: How It’s Actually Done
Ask ten people what a “remap” is and you’ll get ten different answers. That’s the first problem with ECU calibration in motorsport: the language is vague, and vague language hides shortcuts. When someone sells you a “remap,” they haven’t actually told you anything — it could mean a fresh chip, an OB
Velocity Stacks for ITBs: How Length and Radius Actually Make Power
Bolt a set of trumpets onto a clean set of individual throttle bodies and the engine looks the part. But the part that matters isn’t how they look down the inlet — it’s whether they’re the right length and the right shape for your combination. After years building intakes at the sharp end of motorsp
Custom Race Engine Components in the UK: How to Specify Parts That Actually Fit and Last
If you’re searching for custom race engine components in the UK, you’ve already worked out the thing most catalogues won’t tell you: a “high-performance” part that wasn’t engineered around your specific combination is a compromise waiting to fail. I’ve spent enough time at the sharp end of motorspor
Bespoke Intake Manifold UK: How to Spec One That Actually Works
If you’ve landed here searching for a bespoke intake manifold UK builder, you’ve already worked out the obvious: an off-the-shelf casting designed around someone else’s combination is a compromise. The question isn’t whether a custom manifold is better — it’s whether the one you’re about to commissi
Carbon compositeAirbox for Motorsport: How to Get One That Actually Feeds the Engine
A carbon compositeairbox for motorsport is one of those parts that gets sold on a photo. Glossy weave, a moody dyno-cell backdrop, a price tag that suggests it must be fast. But I’ve spent enough time at the sharp end of engine development to tell you plainly: the weave is the last thing that matter
From Prototype to Production: How 3D Printing Became a Real Manufacturing Method
For years, 3D printing for production was treated as a bit of a novelty — a clever way to knock out a quick prototype before the “real” manufacturing began. That’s changed. The technology has matured to the point where printed parts aren’t just stand-ins anymore; they’re the finished article, shippi
What Is Digital Manufacturing? A Practical Guide for Makers
If you’ve ever sent a 3D model off to be printed, machined or laser-cut and had a finished part land on your desk a few days later, you’ve already brushed up against digital manufacturing.
Individual Throttle Body Kit UK: How to Buy One That Actually Fits and Performs
If you’ve started shopping for an individual throttle body kit UK side, you’ll have noticed two things: there’s no shortage of “universal” hardware on the market, and alm
Peugeot GTi6 ITB Kit: How to Get Real Power from a GTI6 & Mi16
If you’re searching for a Peugeot GTi6 ITB kit, you’ve already worked out that a single throttle body and a tired plastic plenum are leaving power on the table. The Mi16 16-valve lump and
Individual Throttle Body Kit for the Honda K20: What Actually Works
If you’ve searched for an individual throttle body kit honda k20, you’ve probably already waded through a sea of “universal fit” listings, vague power claims and bolt-on kits t
The Future of Digital Manufacturing
The future of digital manufacturing is faster, leaner and more precise – changing how motorsport parts are designed, tested and produced.
What Is Performance Engineering?
What is performance engineering? Learn how it improves power, response, durability and efficiency through data-led design, testing and calibration.
What Is High Performance Engineering?
What is high performance engineering? A clear look at how precision design, testing and manufacture deliver reliable gains in power and response.