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shreddr's Avatar
 
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Chip or no chip

i know this topic has been discussed ad-nauseum, but here i go. do i need to replace the stock "chip" (motronic bit?) in order to realize some real performance gians (ie SOP: seat of pants) im not interested in dyno charts, or what gets me 3 more HP from 6500 - 7000 rpm, do i need the chip to realize a recognizable performance gain for a street rider. i have a stock motor with the exception of a cat eliminator and Laser cans. I am sure there are lots of opinions, and lots of previous questions (no moderator search admonitions please) thanks
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Old 10-15-2006, 03:07 PM
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Why didn't you get a Laser chip when you got your cans?
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Old 10-15-2006, 03:11 PM
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shreddr, get the Laser chip for the cat eliminator (laser sport collector) and the Laser cans from Mr. Foster. You will notice the difference.
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Old 10-15-2006, 03:43 PM
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can anyone clearly quantify the benefit of the chip?
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Old 10-15-2006, 06:53 PM
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In spite of having the Laser cat eliminator, I haven't done the chip, and my bike starts and runs fine. However, it was explained to me that I may be running too lean without a chip and I may be taking a chance. It was also explained to me that to clearly quantify the benefit/need, you need to go to a dyno which measures the fuel mixture at various rpms (which you don't want to do). Fixing the mixture will obviously make it run better and perhaps prevent damage, which may or may not be "feelable" through the seat of your pants.
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Old 10-15-2006, 08:18 PM
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Quote:
Originally posted by John Lyon
It was also explained to me that to clearly quantify the benefit/need, you need to go to a dyno which measures the fuel mixture at various rpms (which you don't want to do).
You can't check Motronic 2.4 A/F on a dyno using the usual fourth-gear acceleration runs (or set a PC III for that matter) because while accelerating and for seconds after, the Motronic avoids closed-loop fueling (which tends to be leaner than Alpha-n fueling).

Measure A/F directly and under load under representative driving conditions.

A lot of PC IIIs have been set up by means of screwy dyno tests because dyno guys don't always know or care how a Motronic works.
Old 10-16-2006, 07:33 AM
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Instead of getting a chip, I would go with a power commander!
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Old 10-16-2006, 08:06 AM
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Or a Technlusion which is easy to set up and half the price.
Works very well on our GS with Two Brothers,teenie bit loud but the throttle wheelies are fun.
Old 10-16-2006, 12:14 PM
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Quote:
Originally posted by levert
Or a Technlusion which is easy to set up and half the price.
Works very well on our GS with Two Brothers,teenie bit loud but the throttle wheelies are fun.
Been there done that, the PCIII works much better.

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Old 10-16-2006, 07:09 PM
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Quote:
Originally posted by Boybiker3
You can't check Motronic 2.4 A/F on a dyno using the usual fourth-gear acceleration runs (or set a PC III for that matter) because while accelerating and for seconds after the Motronic avoids closed-loop fueling
Don't know much about this stuff, but can you overcome this issue by holding the rpm's steady at various steps (like every 500 rpm or something?
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Old 10-16-2006, 08:03 PM
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