Precision EFI Stage 1 a must - Page 4 - HCS Snowmobile Forums

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Old 01-13-2020, 05:50 PM   #31 (permalink)
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Current Sled(s): 2018 ZR8000 SP ER 137
Previous Sled(s): '16 800 Axys, '16 ZR7000 LTD, '13 F1100 N/A, '14 1200 TNT
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Quote:
Originally Posted by Greg B. View Post
I know. But thatís how it comes from the factory box stock. The fact you added 10 hp and the stock clutching under revs now?? Something isnít right unless you made changes
The Stage 1 flash supposedly adds 8hp not 10 and before the flash the full shift RPM would be all over the place. Sometimes 7700, sometimes 8200, sometimes 8000, all over the place. I believe this was a mapping issue, not a clutching issue. The engine runs SO much crisper from bottom to top with the Precision flash and I get a consistent 8100 RPM at full shift out. I have never touched the clutches.
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Old 01-14-2020, 06:28 AM   #32 (permalink)
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Current Sled(s): 2018 ZR 8000 Limited 137
Previous Sled(s): 2011 F8 Sno Pro
Location: Upstate NY
Favorite Riding Area: Quebec/Maine/Tug/Old Forge
19-20 Mileage:
18-19 Mileage: 1463
17-18 Mileage: 1331
16-17 Mileage: 1437
Riding Since: 1988
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Originally Posted by krank600 View Post
DO NOT do the Cat reflash. Makes the idle hang like crazy sometimes to the point of the clutch actually engaging! I got the Precision flash done this year and couldn't be happier. Perfect idle, better throttle response and no shift-out RPM issues. No flames either, but I never had flames stock or Cat re-flash either
Yes I've read enough of the less than stellar results with the stock reflash.
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Old 01-14-2020, 09:21 AM   #33 (permalink)
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Current Sled(s): 2018 El Tigre 8000
Previous Sled(s): 16 ZR 6000 Ltd 14 ZR 8000 Ltd 12 F1100 T 11 F8 EXT 09 Z1T
Location: Chicago
19-20 Mileage:
18-19 Mileage: Lots
16-17 Mileage: Not enough
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Originally Posted by BDHABT View Post
It sucks that these sleds run so different.

My `18 was bone stock,had great power,great mileage,and had never flamed once in the 1300 miles I owned it.

Sorry to hear of your troubles.
The problem is when you run it fast and hard, if you're pinching it which is how it is with my high mileage buds the sled flames like a mofo.

I know for a fact that the sled flames less with the stock tune so that's where I went last night.

I've been on Cat's since 87, right now they owe me a bash plate and a side belly pan, I hope they come through with the parts.
My friends and family ask what I'll do with my green jackets if I jump ship............I'll continue to wear them and I'll have a story to tell when I'm sitting on a Doo or Poo in the parking lots and gas stations
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Old 01-14-2020, 09:30 AM   #34 (permalink)
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Current Sled(s): '19 ZR 8000 (137), '17 ZR 7000 El Tigre (129)
Previous Sled(s): '98 ZR 600 EFI, '96 Puma 340
Location: Live Free or Die
Favorite Riding Area: Adirondack park
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Dang man. I have a brand new '19 ZR 8000 in the garage with zero miles and this thread is giving me anxiety!
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Old 01-14-2020, 09:42 AM   #35 (permalink)
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Location: Chicago
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18-19 Mileage: Lots
16-17 Mileage: Not enough
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Originally Posted by bussman View Post
I did a 10+ mile WOT constant pull on the Vermillion River last weekend in nothing but slush and water going 45mph tops. Obviously the sled worked itís ass off. Sled performed perfectly but when I finally got off I shot flames at idle and started the side panel on fire. Iím riding normal this coming weekend, Iíll see what it does. Iím conflicted in how to move forward with this.
It all happens when you're clamping it and going hard, ride with my wife and my sled is all good till she misses a turn and then continues straight down a seasonal road and I have to chase her......... As I'm asking her how she missed the turn she says: "hey you're on fire"
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Old 01-14-2020, 09:50 AM   #36 (permalink)
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18-19 Mileage: Lots
16-17 Mileage: Not enough
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Originally Posted by j.e.1975 View Post
Has anyone compared the flaming issue vs reeds. I ask because I did read a post on here about someone swapping reeds between a 18 and 19. The 18 gained with the 19 reeds and the 19 lost with the 18 reeds. Not sure if it's a factor but it's definitely an inconsistency. Does someone this Vforce or RAD valves have the same issue. I haven't had my 18 with precision flash out enough to seevif it flames.
Also, lots of different sleds will flame if you work them hard enough. These just seem to be more frequent.
The V Force reeds did not help my flaming issue.

Quote:
Originally Posted by F8HO View Post
A pretty simple fix for the flames is a can change. Many have tried that and itís works.
Diamond S Quiet can, the sled flamed less with it but it still flamed nonetheless.

The truth of the matter is these sleds are throwing a lot of fuel at the engine when it's running hard, and I'm guessing it's to cool the combustion chamber and a lot of this fuel is not burned thus it ends up in the silencer, the aftermarket cans have less baffles to store this unburned fuel but they still flame.
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Old 01-14-2020, 09:54 AM   #37 (permalink)
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18-19 Mileage: 1200
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Many of these new EPA compliant motors throw a bunch of fuel at the motor when you let off the throttle to cool them as they are running very lean. Ex: the Poo 850 2020 flash sends 70% more fuel to the cylinder when you let off the gas.
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Old 01-14-2020, 01:02 PM   #38 (permalink)
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Just my 2 cents, if someone out there has a flamer and rides with a non flamer, try swapping some parts. I know this is a huge pain but I know there is some persistent talented people on this forum. Something else is injectors, I didn't read that someone had the injectors changed and it solved the flames.
I also wonder if oil type and fuel quality are factors.
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Old 01-14-2020, 02:43 PM   #39 (permalink)
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2020 riot x stock flash. Here are my plugs after a long hard pull.
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Old 01-14-2020, 03:30 PM   #40 (permalink)
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16-17 Mileage: Not enough
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Originally Posted by j.e.1975 View Post
Just my 2 cents, if someone out there has a flamer and rides with a non flamer, try swapping some parts. I know this is a huge pain but I know there is some persistent talented people on this forum. Something else is injectors, I didn't read that someone had the injectors changed and it solved the flames.
I also wonder if oil type and fuel quality are factors.
And what parts do you suggest swapping out?

And who in there right mind would even want to fuck around with parts from a flamer?

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Originally Posted by bigchevrolet View Post


2020 riot x stock flash. Here are my plugs after a long hard pull.
That's a dark mocha color which if fine, perfect would be a mocha au lait color
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