Posted inEngine Management
What E85 Actually Buys: Boost, Timing, and Where the Advantage Vanishes
Ask what E85 is worth on a big turbo engine and you get one of two answers. Either it is magic, or it is 30% more fuel for 30% more…
Posted inGeneral
The DfT in-use emissions consultation, what it actually proposes
The Department for Transport wants vehicles to meet their build emissions standard for life. Here is what the proposal actually says, which vehicles it covers, and the one line in it that treats catalyst replacement the same as catalyst deletion. Closes 6 September 2026.
Posted inEngine Management
Where the Stock ZF 8HP70 Gives Up: 901 lb ft, Measured
The ZF 8HP is the default answer for anyone putting an automatic behind a big power engine, and the question that follows it everywhere is the same: how much will…
Posted inEngine Management
Throttle Body Effective Flow Area: Building a Correct Area vs Position Table
Open any modern standalone ECU that runs a throttle-based air model and you'll find a table mapping throttle position to flow area. Open a dozen real calibrations and a good…
Posted inMk4 Supra
Mk4 Supra Zestek Steering Wheel Adapter Failure: Downshift Paddle Not Working
The Zestek steering wheel adapter on my Mk4 Supra has suffered another downshift paddle failure. This is now the third failure in 15 months on a £1,400 + VAT product.…
Posted inEvents and Meets Mk4 Supra
Mk4 Supra | Isle of Man 2026
In May 2026, a select few of use went off to the Isle of Man for a few days higher speed fun. A break from Scotland this year. And to…
Posted inMk4 Supra
Mk4 Supra: The 3.4 Stroker Build
If you've been following this build from the start, you'll know the plan was always to go 3.4 stroker. The 3.0 on the G40-900 was never the finished article. It…
Posted inEvents and Meets Mk4 Supra
Scotland with slap! Adventures
The annual pilgrimage to Scotland with slap! Adventures took place in May, back it is usual time after the 2024 May trip to Monaco. As usual, I had the car…
Posted inMk4 Supra
Mk4 Supra – Big Brake Kit (BBK!)
Back in November, I realised I was going to need a brake upgrade on the Supra, given the performace increase I was going to having, both now and scheduled for…
Posted inMk4 Supra
Mk4 Supra – Rival Worx TRD Style spoiler
For Black Friday, 2024, I ordered the Rival Worx TRD Style rear spoiler for the Supra. On the website, it says 3-4 weeks for delivery. Perfect. Get it for Christmas,…