As we know the 0 curve on the 3MA CDI is somewhat spectacular.
In my first tests you can see the bike does not give you more power when using the 0 curve
The idea now is to shorten the 3MA1 pipes to let them peek at 10.800 a 11000 rpm (where it is 14 degrees using the 0 curve)
Shortened the exhaust pipes with 30MM
Stock 3MA1 pipes are close to 945mm long
Now shortened (with the 30mm) total length becomes 915mm
This hopefully will bring peek power from 10.150rpm (stock pipe) to a 10.800rpm.
The plan on paper
Her we go.
Stock pipes on the bike
The (original) pipes on the floor
Marked the place where to cut (30mm)
Two pipes with the cutout pieces
Also cut the mounting point's, to re-weld later
Before welding (tack the pipes), plugged of the exhausts.
Don't want any welding bulb's coming in my exhaust (again)
The two shortened pipes welded
Not my best welding, but it definitively will hold
Re-welded the mounting points
When all mounted back, its tight but seems to fit nice
First impression is good.
EGT sensors welded and mounted, As tight as possible to the piston. (shortest distance)
Both Exhausts mounted back with the two EGT sensors
Had some time to test the 0 curve and 1 curve. The shortened pipes peek around the 11.000rpm mark, so that turns out to be perfect.
Here is the run with the closed throttle curve, a nice 64,7HP at 10.732rpm
Peeking at +/-11.000rpm where the pipe's where Shortened for.
Here you see the difference between the closed and full ignition curve.