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Track Day

A project log for Turbo Lexus IS200 (on the cheap!)

Improving the performance of an IS200. Goal - Under £1000

roryRory 02/01/2018 at 11:330 Comments
So, the first proper test of the car, a full day ripping it at Brands Hatch. The day went well, no blown up engine. The car was much better out of the turns as the turbo comes on very early giving a big boost in torque.

I was able to keep up with some much quicker cars, at the end of the day I was following a new M3 and they had to let me past. Must have been lacking driver skill as the engine is advertised with 425BHP!

The conditions during the day were 'interesting'. The morning started very wet and cold. The track was incredibly slippery, and cars were spinning all over the place with a few expensive cars hitting barriers. At one-point I was following a track prepped Golf down paddock hill (notorious fast off camber corner). He spun off into the gravel, wheels dug in and he rolled 360°. Nice dent in the roof...

Don’t let me put you off doing a track day though. Normally nobody crashes, and everyone has a good time.

However, I observed that at high RPM the turbo compressor was well out of its performance range and the boost pressure was dropping down to almost zero. I think i need a bigger turbo!

Need to think about this as the car is currently working quite well.

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