Hi Comp 131ci Stage 4 Screamin Eagle Lowrider S

Another 150+ HP Lowrider S leaves the stables at DDHD.
Featuring a Cycle-Rama CR540 Camshaft, T-Man Hi compression +8cc Pistons & along with a Bassani Road Rage III 2 into 1 exhaust, This beautiful 'Midnight Crimson' 2021 Lowrider S got the full Screamin Eagle treatment from the word GO!

The customer opted for the Saddleman seat with the gold stitching to really tie it in with wheel colour & add his own personal touch of style.

The oil pump in the 2020 models & up features an 8 lobe gerotor on the scavenger side to eliminate the dreaded 'Sumping' problems from the early days. This oil pump is more than capable of the demands of the 131ci stg 4 kit so just for the added security for the high lift cam, I fitted a 'Fueling OE+' Cam plate & S&S Tappet cuffs.

The speed limiter on the 2021 models has been a difficult hurdle to overcome when tuning, however Technoresearch has worked day & night to get the ON / OFF function working as a selectable option in the tune setup.
During filming I was not able to achieve a full wide open power run due to the fact I was hitting the speed limiter in 4th gear at 190km/hr at roughly 4800rpm.

I was able to cut the signal wire for the speedo to overcome the issue & get the tune fully finalised. The wire has to be reconnected after tuning so the engine will idle properly once coming to a stop at the traffic lights ect. The reason for this is the IAC motor relies on inputs from the speedo to calculate how many 'steps' are required to provide engine idle speeds when the throttle is closed.

Thankfully though, the speed limiter in 2021 models is now longer an issue as Technoresearch has the function available now.

Please note viewers, The motorcycle gets heat cycled numerous times before the dyno so please do NOT assume the freshly built engine gets fired up then immediately revved up the dyno.
Once on the dyno the tuning process is very carefully carried out monitoring the AFR's etc while the tune is being built.
I edit out lots of footage from the heat cycle stage & early tuning stages just to keep the video flowing so you guys are not watching 20mins of a motorcycle getting warmed up, cooled down & warmed up again etc.

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Cam available here at https://cycle-rama.com/

I work here https://ddhd.com.au/

You can call me on 0746342766 during AEST business hours.