Latest Articles and Workshop Notes

Technical breakdowns, dyno results, and hands-on tuning guides from the Injecturbo bench. Each post covers a specific problem or procedure you can apply in your own garage.

Ntokozo Mokwena March 12, 2025 14 comments

Notes From a Recent Planning Session

This page frames a concrete subject instead of using a generic heading. It explains what is being considered, why it matters in the site's context, and what detail a reader can expect next. The copy is intentionally plain and specific, so it reads like a real content item. We look at the actual decisions behind the next batch of articles, the platforms we are focusing on, and the testing equipment that will shape the upcoming dyno sessions. If you have been wondering why certain topics get covered before others, this post lays out the reasoning plainly.

Adrian Ngobeni March 5, 2025 9 comments

A Practical Look at the First Week

This item focuses on practical use, tradeoffs, and decisions that a reader may recognize. It avoids broad promotional claims and keeps the topic tied to a clear situation. The description gives enough substance for a real page rather than a placeholder card. We walk through the first week of testing a rebuilt turbocharger on a customer's daily driver, including the boost readings we logged, the fuel trims we corrected, and the wastegate preload we had to reset after the initial shakedown. The goal is to show what actually happens when a fresh build meets real road conditions.

Ntokozo Mokwena February 27, 2025 21 comments

What Changed After the Initial Review

This page gives the third item its own reason to exist. It covers a separate angle, includes concrete context, and avoids repeating the same promise in different words. The result should feel like a planned article, project, review, or offer. After the first round of feedback on our intercooler flow testing article, we went back to the bench and re-ran the pressure drop measurements with a different gauge setup. This post covers what we found, why the original numbers were misleading, and how the revised data changes our recommendation for core sizing on high-boost street builds.

Adrian Ngobeni February 18, 2025 17 comments

Boost Leak Testing: Finding the Invisible Failure

Boost leaks are one of the most common causes of poor performance in turbocharged engines. This article walks through the tools needed to build a simple boost leak tester, how to pressurize the intake system safely, and where to look for leaks—from intercooler couplings to intake manifold gaskets. We also cover how to interpret hissing sounds and soapy water tests, and what to do if you find a leak. By the end, you'll have a clear diagnostic routine to keep your boost pressure where it belongs.

Ntokozo Mokwena February 10, 2025 12 comments

Wastegate Adjustment: Setting the Right Boost Curve

Wastegate adjustment is a critical skill for anyone tuning a turbocharged engine. This guide explains the difference between internal and external wastegates, how preload affects boost response, and how to measure actuator pressure with a hand pump. We also discuss common symptoms of a misadjusted wastegate, such as boost creep or spiking, and how to correct them. Whether you're running a stock turbo or a large aftermarket unit, these principles will help you dial in a stable boost curve.

Adrian Ngobeni February 3, 2025 8 comments

Intercooler Flow Efficiency: Pressure Drop and Heat Soak

Intercoolers are often overlooked in performance builds, but their efficiency can make or break a tune. This article dives into the relationship between core thickness, fin density, and pressure drop, and how these factors affect intake air temperatures. We also explain how to measure intercooler efficiency using temperature probes and pressure gauges, and what to look for when upgrading. Whether you're tracking your car or just want better daily response, this guide will help you choose the right intercooler for your setup.

Ntokozo Mokwena

Lead Diagnostics Editor, Injecturbo

Ntokozo has spent over a decade in engine diagnostics, working on everything from turbocharged four-cylinders to domestic V8s. He writes the boost leak and wastegate guides, and he still turns wrenches in his own garage between issues. Reach him at info@injecturbo.com or call 028 043 1592.

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