So just took a ride on the new turbo. let it warm about for about five mins and then went slow for the first pass and it felt like it was spuddering came back stopped for a few seconds and went again seemed alittle better but didnt seem right could it maybe be old fuel
cpc pump gas
- Thread starter GreenArcticcatM7
- Start date
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mynewuseddoo
Well-known member
You used old fuel in your new high performance machine? Please say no please say no...
What was...
Boost pressure?
Elevation?
fuel quality?
stage 1 or 2?
fuel pressure?
box settings?
What was...
Boost pressure?
Elevation?
fuel quality?
stage 1 or 2?
fuel pressure?
box settings?
Well I moved it around a couple of times with old fuel but when I went for the ride last night I put 5 liters of new fuel in it cuz that was all I had but there only like 1 or 2 liters of old fuel in it so. Maybe that's why it gotta better on the second pass because it was cleaning it out
Boost pressure:6-8
Elevation: at my house so maybe 2500-3000ft
Octane 91
Stage 1 pump gas
fuel pressure: 35
box setting: 4
Elevation: at my house so maybe 2500-3000ft
Octane 91
Stage 1 pump gas
fuel pressure: 35
box setting: 4
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mynewuseddoo
Well-known member
There are 5 different modes on your attitude controler. 4 doesn't really say too much. What are the box settings for all of the modes. Sounds like you may be lean with the numbers you gave. This sputtering is on the top end right? Your fuel pressure sounds too low and your boost sounds to high for that elevation on that fuel.
I'll have to check today and see because the dealer told me that the setting was on 4 and they said its all ready just put fuel in it and go. The sputtering was like all the way through. I honestly dont know alot about the turbo and how it works yet and u you helping me makes life alot easier. Thanx
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mynewuseddoo
Well-known member
Ok, dealer doesn't know anything about Attitude controlers or wants to keep you in the dark, check!
1 go online and get the Attitude instructions and figure the box out, its simple and straight forward. There is even an online simulator where you can play with the controler to see before you do.
2 your fuel pressure is way too low try 38-40 psi fuel(play with it a bit, see what works best)
3 Your boost is too high for that elevation drop down to min boost 4.5-5psi
4 when you press the mode button to cycle through the attitude settings push it quickly or it can jump through a couple of modes at a time. Its sensitive.
5 after figuring out how to use the attitude controler try your settings at
green 1
yellow 3
red 8
green blue 8
red blue 3
set these and your fuel pressure before you ride it.
when setting your fuel pressure, set it at a high idle, about 2500 rpm.
Don't take what I have said, as the final set up. It is a good starting point and you need to tune the rest of the way but this should get you in the ballpark.
When you do make the last fine adjustments for your set up, only make them one at a time, see what it does, and go from there.
What are you tuning with, AFR or EGT?
Read the Attitude instructions thoroughly.
1 go online and get the Attitude instructions and figure the box out, its simple and straight forward. There is even an online simulator where you can play with the controler to see before you do.
2 your fuel pressure is way too low try 38-40 psi fuel(play with it a bit, see what works best)
3 Your boost is too high for that elevation drop down to min boost 4.5-5psi
4 when you press the mode button to cycle through the attitude settings push it quickly or it can jump through a couple of modes at a time. Its sensitive.
5 after figuring out how to use the attitude controler try your settings at
green 1
yellow 3
red 8
green blue 8
red blue 3
set these and your fuel pressure before you ride it.
when setting your fuel pressure, set it at a high idle, about 2500 rpm.
Don't take what I have said, as the final set up. It is a good starting point and you need to tune the rest of the way but this should get you in the ballpark.
When you do make the last fine adjustments for your set up, only make them one at a time, see what it does, and go from there.
What are you tuning with, AFR or EGT?
Read the Attitude instructions thoroughly.
Last edited:
35 psi fuel pressure is too low. Should be around 45.
6-8 pounds of boost you will detonate on pump gas on the 2010 model and will likely be very close on the 2009 model.
What are your AFR readings?
6-8 pounds of boost you will detonate on pump gas on the 2010 model and will likely be very close on the 2009 model.
What are your AFR readings?
fuel pressure
Dale has recommended that fuel pressure be between 38 - 40 lbs on his kits. Mine runs best and is easiest to start when inside that range. Hope this helps. DB
Dale has recommended that fuel pressure be between 38 - 40 lbs on his kits. Mine runs best and is easiest to start when inside that range. Hope this helps. DB
more suggestions.
A couple more thoughts,
You mentioned that your house is at 2500-3000 feet. Do you ride from the house or are you trailering to higher elevations.
Once you get it dialed in at the house you will need to take fuel away for elevation. You will also be able to run higher boost at altitude.
Also, Turbo sleds can take a few minutes to warm up properly so don't push to hard on start up.
Lastly, If your sled has cutlers over-ride switch for the water temp sensor make sure that it is not on or it will cause the sled to run rich across the board. If you are using the stock guage the wrench light might even come on indicating that there is a problem.
DB
A couple more thoughts,
You mentioned that your house is at 2500-3000 feet. Do you ride from the house or are you trailering to higher elevations.
Once you get it dialed in at the house you will need to take fuel away for elevation. You will also be able to run higher boost at altitude.
Also, Turbo sleds can take a few minutes to warm up properly so don't push to hard on start up.
Lastly, If your sled has cutlers over-ride switch for the water temp sensor make sure that it is not on or it will cause the sled to run rich across the board. If you are using the stock guage the wrench light might even come on indicating that there is a problem.
DB
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mynewuseddoo
Well-known member
Yeah, 45 is really high. I run my stage 2 fuel pressure at 40 psi and 9 psi boost. If his fuel pressure is that high his bottom end will be boggy as hell. I was playing around with my pressures when tuning and from 40 to 42 makes a big difference on the bottom end. The top end will just take the fuel because of the boost but at 45 psi and in an on/off throttle situation I think would load you up really quick and cause bogging in the higher ranges also. For this guys set up, running 38-40 psi for his elevation will keep his throttle crisp. As long as he doesn't want to get greedy and crank the boost pressure above the turbo system's and fuel's capabilities, then he will be ok.
Good to know. We run most of ours at 42-45, so it is great info to know the CPC runs at a different PSI.
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mynewuseddoo
Well-known member
Are you running boondocker?
Is the fuel pressure the same when its cold and hot?
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mynewuseddoo
Well-known member
Yes. But, like with anything, it is always good practice to recheck it periodically through out the day. With mine, I've got everything pretty much where I want it but even though I don't change any settings I am always checking everything over. I'm not concerned that it will come out of tune but it's a just incase factor for me. You can never be too careful I guess.
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hatchers
Well-known member
and they also (er the one i have helped with) wont built hadly any fuel pressure when you pull the rope 20 times, 15ish psi if i remember right
the initial post sounds like you have too much fuel, lower the boost color until you see 12.6ish A/F
J
Jeff K
Well-known member
The 2011 CPC kits have an updated fuel pressure regulator that holds the fuel pressure instead of letting it bleed off. Even though my regulator is the older model, I have never had any problems with starting or building fuel pressure when pulling on the rope.
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mynewuseddoo
Well-known member
If mine sits for a month, I've still got over 30psi fuel pressure in my lines and starts first or second pull.
so took it out for a another ride tonight and the afr said 12.5 to 13.0 and it was still sputtering
