Engine modification guide

“Every engine mod, explained, reviewed and rated.”

Everything you could ever need to know about engine mods and upgrades for a fast road car, or competition setup.

Secrets from industry insiders, to commonly held myths and misconceptions and potential tuning problems.

Don’t even think of upgrading your car until you’ve read our insider guides and tips.

From a mild stage 1 tune up to a high power stage 3 we list, review and rate every popular mod.

We outline each modification option and go into the benefits and weigh up the pros and cons of each.

Turbos Explained

Let’s look at some questions that we’ve had about turbos “what is a turbo” “why were turbos invented” and “how do they work “, “what are blow-off valves”, “what’s a wastegate actuator do” and “what are twin scroll turbos & what’s the difference between them and standard turbos”?


Miller vs Otto vs Atkinson Cycle

Complete guide to the differences between Miller, Otto and Atkinson Cycle Engines and the pros and cons of each type of engine.


Performance Spark Plugs

Find out about spark plug electrode designs, materials used and the effect these will have on your performance and hot vs cold spark plugs.


Connecting Rods

We look at the pros and cons of I and H bean conrods, the various materials used from Titanium, Aluminum, and Steel and discuss the best options for your car tuning project.
A performance engine requires optimum designed internal pistons, crankshafts and of course high performing conrods.




Please watch this video on our new YouTube channel.

Member Benefits

Join our forum today and benefit from over 300,000 posts on tuning styling and friendly car banter.

You will also have full access to the modifed car gallery, project car updates and exclusive member only areas.

(All car owners of all ages and from all countries are welcome).


BMW 335i - 2021 COTY

We gave the BMW 335i our coveted car of the year award, read more about this awesome car and see why 335i Tuning Guide

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