You think this is B.S. ?
I know they make chips for diesels that are noticeable, but you think this would work on an outboard?
It says it delivers a richer fuel/air ratio, but also state it improve fuel economony. How does that work? Basically they are tricking the ECU intake manifold temperature input circuit so the the engine thinks that the ambient ari is colder than what it actually is richening the mixuture and possibly altering timing some.
Personally I think it is junk. It may add a little HP here or there across the RPM range (or maybe loses some as well), but since it is a gas engine there isn’t much to gain by altering the mixture/timing when it is already optimized from the factory.
Although it doesn’t void warranty (it would have to be proven that it caused a failure) I’m guessing any type of powerhead failure Yamaha will give you the finger if installed.
Iain Pelto
Edgewater 185CC “Jumpin’ Bean II”
Native Manta Ray 14
i wouls like to see some real world before and after dyno tests done by an independent tester
hairball
the jap car guys tune the computers to get real world increases, so its definately possible, just wonder if its worth it.
A good tuner replaces the stock fuel/air and timing tables with revised (optimized) tables. There are multiple tables in the calibration; which table gets used depends largey on temperature and load.
Thinking about this, tricking the ECU into thinking it running at a lower intake temperature is going default to a table that has a richer fuel air ratio and advanced timing. Yes this will give you more power. So what happens when the engine is operating on a 95 degree day and it thinks its 45 degrees with the advanced timing? A proper tuner would account for this by optimizing each induvidual table rather than a wholesale change.
Iain Pelto
Edgewater 185CC “Jumpin’ Bean II”
Native Manta Ray 14
HP can be gained…but emissions goes down hense the reason the factory doesn’t “retune” it in the first place. Being 3 CARB certified has big $$$ advantages for manufactors. Also the “retuning” program may not be as reliable as factory. If you got to have more HP get a bigger motor or a nice paddle…
26’ Twinvee Cat
Twin Suzuki 175’s
www.creeksidemetalworks.com
How does Yamaha get the extra 25 HP in their F225? My F200 is exact same motor. Is there a Yamaha performance chip that gives the same motor the extra horse boost?
“Sometimes I think it’s a shame, when I start feelin better when I’m feelin no pain…”.
GW 205
F200 Yam
your 200 is a detuned 225. The 225 Yamaha by comparison is a weak 225. You could change out the ecm for a 225, but i doubt you could tell the difference. Teh 250 has variable cam timing and is a much more powerfull engine.
BTW, the 150 Yamaha puts out close to 170 hp, its pretty strong for a 150. teh engien that its based on is the Ford Focus engine. Don’t know if they left anything on the table with that engine. Its probably the best 4 stroke 150 on the market
quote:that is why i would not put any performance boosting chip in it.it is reliable and powerful enough...if i need more its time to repower.
Originally posted by sparepartsIts probably the best 4 stroke 150 on the market
Plus i don’t think Yamaha would warranty any issues the chip may cause…
quote:
Originally posted by chris Vi wouls like to see some real world before and after dyno tests done by an independent tester
hairball
the jap car guys tune the computers to get real world increases…
</font id=“quote”></blockquote id=“quote”>Jap car guy here. I believe the electronics (ecu) upgrades that actually make signifiicant power improvements are in force induction applications (turbo or super chaged). In those cases, the is a lot of engine management control intake pressure. There is frequently a lot of opportunity to push more air into the motor. If you can push more air in, you can also push more fuel in to get an appropriate fuel/air mix. Without the opportunties found in forced induction systems, I don’t remember seeing anything that really produces significantly more power (I’m sure therf are exceptions - no engine manufactuere wants to send out a weak motor).
Also, if I understand how it works, most motors run a little rich by design. This cools cylinders and valves and such. In the tuner world, you get more power as lean out the mix and gwt closer to 100% burn. The closer you get the hotter all those parts get. Get to lean and you toast the motor.
The trick in the OP appears to make power by making the motor run richer and claims to be more efficient. From my understandinfg of what is going on, neither of those claims makes any sense.
17’ Henry O Hornet
26’ Palmer Scott