Mon, 18 Jan 99 13:56:36 +0100 - Message No. 4772
From: "Rebl_Manfred"

Subject: re: 1998 AT


Hi Robert,

I modified my 60hp @ as follows:

- open Arrow exhauster (dismount the end pipe of the exhauster, it is a 
little bit loud but brings you about 3 hp measured at a dynamometer)
- Dyno jet kit (bigger nozzles other needles two bigger wholes in the 
careburator
- K&N Sports airfilter

the bike has know about 57hp at the rear wheel (this is about 65 hp at the 
engine) measured at the dynamometer.
But the big difference you can't measure or show only in more hp or torque, 
the bike reacts more fast know at the throttle (more and quicker action by 
driving), also the fuel consumption grows up (2Persons with luggage and 
highway driven will be about 10l/100km).

My personal opinion is: If you buy the parts all new it is a lot of money, 
but if you can get an used exhauster or some parts with special discount 
and fit it yourself to the bike it is ok.
The only think you should really try is to let the bike run on a 
dynamometer with a mechanic to optimize the engine fuel-air mixture and 
this will give your bike the optimum power and avoid damages.



kind regards
  ATIC #283 Manfred Rebl / ATBEASP1 Resident Engineer Wuerzburg
  0049-931-202-161(fax335);0049-172-6174817 e-mail: 
manfred.rebl@at.siemens.de
-------------
Original Text
From: "Robert A. Pontbriand" , on 18.01.1999 11:28:
Hello again,

Been just following the threads about different subjects and thought I'd
put a question out here. First upgrade I have made is a genuine Honda
center stand, but now I'm already thinking of getting a little more out
of the engine. Some of the guys at this Honda shop have put SuperTrap
mufflers on their bikes and went one size uo on the main jets, and idle
jets. The whole change over is about 67,000 yen. 47,000 yen for the
muffler, a couple thousand yen for the jets, and 16,000 yen for the
labor.

    Thus, the question has anyone on this mailing list added a super
trap, and increased the jets, and what kind of performance did you
experience? Was the expense worth the cost? I like to get a little more
out of all my bikes and usually do so by adding a open type exhaust and
increase the jets. I remeber when I had my TransAlp more people said
don't waste your time and money. But on the AT the guys here in Japan
say it makes a big difference.
Can anyone give me some feed back.

Robert A. Pontbriand
Still in Japan
1998 AT
1996 HD





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