Mon, 26 Apr 1999 11:42:33 +0200
- Message No. 5494
From: martin.franz@netway.at
Subject: Tuning, tuning, tuning...
Hi friends,
since friday, I'm owner of the new sinus tuning kit for africa twin. Short
report: kit comes complete with airbox modification, different air filter
(k&n, but not the one for africa !), mounting equipment for this airfilter,
carburator (adjustable) needles, main jets and springs, conical exhaust
piping, muffler out of stainless steel (also inside), alu mounting for
muffler.
Power gain meassured on dynamometer is constant 5hp from 6.000 to 8.250rpm;
alos gain in low rpm, about 4hp at 2.000, but a "no gain" zone at 4.300.
Noise: no db increase measured on dynamometer run compared to orig.
mufflet. Knobby tires made biggest noise... personal impresion is, that it
is a bit louder, but not much. VERY far away from an open muffler
(McBruell, etc.).
Sound is deep and sporty. Some zwizwizwi at very high rpm and full
throttle, have to verify that again...
Driving: not only power increased, but also reaction to throttle. Absolut
no negativ load shift reactions. Bike feels like it has eaten steroids
(uhh, maybe bad for Jolanda :-))
Negative: no heat shild, makes sometimes "BANG" (have to check my valve
clearance, might be also the cause).
Conclusion: for a final result I of course need more testing (fuel
consumption, performance on altitude, final sound check, offroad...), but
today, I'm absolutly happy with that system !
best regards, Martin
www@atic.org