Just wondering, i here people dont like the DCS sensor on the 2002 SRX, are they that bad? im may be buying another SRX and i want a 2001 or 2002, not desided yet... im looking for it to be a trail sled/racing at the runs every now and then. So with some motor mods of course.
super1c
Super Moderator
Dont have a srx but i do have a 04 viper with it and no problems at all. Do a search on DCS. One of the guys, cant remember which did a great write up on it. If i come across it i will send you the link. It does what it was ment for, save the engine if something was is wrong. CCC
eric.s.t said:
If I had known it was coming back in '01 I'd have waited another year.
If I had my choice I'd opt for an '02 just because of the DCS.
I have an 02 and it sometimes comes on across the lake. I love it! Gives me great piece of mind when the F7 I was out with melted a piston!
SOmething I read is to go up one size on the main jets to the '01 specs. Mine has that and like I said it DOES come on sometimes but not often.
When dealing with carburetors there WILL be times the jetting is a little lean and DCS will save your engine and hundreds if not more dollars. DO IT!
SOmething I read is to go up one size on the main jets to the '01 specs. Mine has that and like I said it DOES come on sometimes but not often.
When dealing with carburetors there WILL be times the jetting is a little lean and DCS will save your engine and hundreds if not more dollars. DO IT!
bluemonster1
LIFE MEMBER ONLY ONCE!!!
This write up is from American Snowmobiler:
Top Performance: SRX
Yamaha states that the SRX is based on industry-leading engine technology like self-cleaning power valves, 3D ignition system, liquid-heated flatslide carbs and new for this year is an automatic detonation control system.
The SRX is for the go-quick guy. Based on our 11th annual Shoot-Out results the SRX can zip through a quarter mile in nearly 12 seconds flat. That was the best out-of-box experience we've seen at any Shoot-Out. So the performance is real.
Yamaha's Detonation Control System allows leaner production carb settings to reliably produce increased power. Since the mix is leaner, the sled gets improved fuel efficiency.
The DCS monitors combustion vibration for signs of possible detonation, which may come from poor fuel, water or contaminants in the fuel. When detonation problems are detected, the ignition timing adjusts until detonation ceases.
When the DCS reacts, you get up to three stages of action:
1. Upon initial detection, the ignition timing retards 3 degrees;
2. If detonation continues, the timing sets back 6 degrees and you see a quick flash from the console mounted warning light;
3. If engine-damaging levels prevail, the ignition reduces top revs to a "limp home" mode of 6400 revs and the indicator lamp continues to flash. When the detonation stops, the system automatically resets itself.
We found when test riding an SRX with regular grade fuel and jetting set 10 jets too lean for Midwestern riding conditions that the sled automatically retarded itself. When we held the throttle wide open in spite of the monitored warning, the sled backed down to 6400 revs, reset the ignition and then climbed back out until the jetting and low grade gas once again required a sensor reaction. We couldn't burn the engine down. And we were trying. This will most likely be a coming feature for all future sleds as it beats the Polaris dual mode switch in peace of mind for owners.
Key 2002 SRX features:
• Dual bulb halogen headlamps;
• 145 horsepower, 700cc Power Valve-equipped three-into-three triple;
• Dual-piston hydraulic brake with inner ventilated rotor for improved cooling and stopping power;
• ProAction chassis and suspension systems for flat cornering and high speed performance;
• CNC machined exhaust ports;
• Powder metal forged pistons;
• 300 watt ignition with 3-D timing;
• Plastic skis;
• End Goal: Maximum horsepower and quick accelerating machine for very competitive riders.
Top Performance: SRX
Yamaha states that the SRX is based on industry-leading engine technology like self-cleaning power valves, 3D ignition system, liquid-heated flatslide carbs and new for this year is an automatic detonation control system.
The SRX is for the go-quick guy. Based on our 11th annual Shoot-Out results the SRX can zip through a quarter mile in nearly 12 seconds flat. That was the best out-of-box experience we've seen at any Shoot-Out. So the performance is real.
Yamaha's Detonation Control System allows leaner production carb settings to reliably produce increased power. Since the mix is leaner, the sled gets improved fuel efficiency.
The DCS monitors combustion vibration for signs of possible detonation, which may come from poor fuel, water or contaminants in the fuel. When detonation problems are detected, the ignition timing adjusts until detonation ceases.
When the DCS reacts, you get up to three stages of action:
1. Upon initial detection, the ignition timing retards 3 degrees;
2. If detonation continues, the timing sets back 6 degrees and you see a quick flash from the console mounted warning light;
3. If engine-damaging levels prevail, the ignition reduces top revs to a "limp home" mode of 6400 revs and the indicator lamp continues to flash. When the detonation stops, the system automatically resets itself.
We found when test riding an SRX with regular grade fuel and jetting set 10 jets too lean for Midwestern riding conditions that the sled automatically retarded itself. When we held the throttle wide open in spite of the monitored warning, the sled backed down to 6400 revs, reset the ignition and then climbed back out until the jetting and low grade gas once again required a sensor reaction. We couldn't burn the engine down. And we were trying. This will most likely be a coming feature for all future sleds as it beats the Polaris dual mode switch in peace of mind for owners.
Key 2002 SRX features:
• Dual bulb halogen headlamps;
• 145 horsepower, 700cc Power Valve-equipped three-into-three triple;
• Dual-piston hydraulic brake with inner ventilated rotor for improved cooling and stopping power;
• ProAction chassis and suspension systems for flat cornering and high speed performance;
• CNC machined exhaust ports;
• Powder metal forged pistons;
• 300 watt ignition with 3-D timing;
• Plastic skis;
• End Goal: Maximum horsepower and quick accelerating machine for very competitive riders.
YAMMIEGOD3:16
Active member
KEEP IN MIND ABOUT THE DCS, YAMAHA CAME OUT WITH THAT IN 2002, THEY HAD HINDSIGHT TO KNOW THAT GAS TODAY IS CRAP. THAT FEATURE IS A BLESSING. 3:16 (yammie tony)
bluemonster1
LIFE MEMBER ONLY ONCE!!!
it is peace of mind yammi 
It should be on all sleds as a warning about BAD GAS..glad I have it....
It should be on all sleds as a warning about BAD GAS..glad I have it....Ride.Race.Live
New member
Def a good thing to have!... I have considered at one time to attempt to install the set up in my 01 but id be better off just finding a 02... would of saved my first srx and would of prevented damaged pistons in my current 01
YAMMIEGOD3:16
Active member
MOST SLEDS TODAY DO HAVE IT. IF THEY DON,T THESE CLEANING BURNING SNOWMOBILES OF TODAY CAN RUN ON ANY GAS YOU PUT IN. SLEDS HAVE CAME ALONG WAY. 3:16 (yammie tony)
