Stage 1 is the basic engine modification for modern Harley-Davidson motorcycles. EPA requires to use the sound restrictors, catalysts, lean fuel mixture - all this reduces power, increases the engine temperature and sugnisifisantly limits the max RPM.
We chose the S&S Superstreet exhaust which provides max torque with low dB sound level. This pipe is compact and fits well, especially with the stainless steel finish.
The S&S Stealth air box is a classic solution with the best performance.
The Thundermax ECU is the most compact auto tuner with wideband O2 sensors on the market. It lowers the engine temperature and increases a lot the RPM limiter, making the gears much longer and riding more fun, comfortable, faster and intense.
0:00 Intro
1:13 Stage 1 kit review
2:28 OEM exhaust removal
3:52 OEM air cleaner removal
4:21 S&S Superstreet exhaust installation
6:48 Air cleaner S&S Stealth installation
7:48 Thundermax ECU installation
9:16 Engine tuning with Thundermax ECU
11:38 Sound of the new Stage 1
Detailed article: stuntex.ru/en/article/stage1-...
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