failures after tuning
- Thread starter zenk
- Start date
Lem Lamb
Active VIP Member
Not tuning it right and starting over from scratch,,, there are lots and lots of things that can wrong...
- Thread starter
- #5
I mean more so like other parts failing. I think i read people were having the charge tube cracking after a tune. Im trying to figure out what i should replace after doing a tune to get my sled to 180hp. i have pretty decent knowledge of turbo systems and getting an additional 20hp equates to roughly 2-3 psi of increased boost. increasing the pressure by 2-3psi should not cause that rubber charge tube to crack.
My point of the question is, i know alot of people have tuned their factory turbos. if people list the failures they had, the more common ones between people would be where to start. I hear most people are having the best luck with Muptun
Bnorth
Active VIP Member
I would guess that that an additional 2-3 psi is pushing the compressor near the edge of its efficiency and the extra heat + pressure is causing the crack.
- Thread starter
- #7
Thats fair. But, the new gen 5 is running all the same parts(turbo, intake and charge pipe) as the gen4. All the changes from gen 4 to 5 did not include anything engine/turbo related beside boost pressure and timing.
Bnorth
Active VIP Member
That's interesting I didn't know that. I would have expected at least revised charge piping to fit the chassis.
- Thread starter
- #9
I am wrong. The charge pipe is different. After reading more into it, it says they charge tube is thinner then on the gen4. Thge intake tube is also different but that would be because the whole intake system is different.
maxwell
Active VIP Member
charge tube and drivers.
Other than that just catastrophic nuclear engine and turbo failure
Other than that just catastrophic nuclear engine and turbo failure
oler1234
Active VIP Member
Having manually tuned mine there are a lot of function you can alter on the stock ECM. if you don’t really know what your changing or its effects then you’ll see posts like this. Furthermore the manufacture of the software constantly is evolving and keep providing updates. Last year there were 3 updates and new abilities for tuning.
So really you need to understand the big picture and be up to date with your software.
Simple cranking boost up without altering the target fueling table will work but not long term. A lot of ‘toons’ out there doing and selling a product like this.
Some change the rpm x acceleration table, bad idea this was really set in place for blowing belts
Timing is another quick one
Removing safeties pre-set
Changing oil consumption
Boost x elevation scaling factor
Bla bla bla, list can go on for a long time.
My advice, if you can afford to fix it, then dont modify it!
So really you need to understand the big picture and be up to date with your software.
Simple cranking boost up without altering the target fueling table will work but not long term. A lot of ‘toons’ out there doing and selling a product like this.
Some change the rpm x acceleration table, bad idea this was really set in place for blowing belts
Timing is another quick one
Removing safeties pre-set
Changing oil consumption
Boost x elevation scaling factor
Bla bla bla, list can go on for a long time.
My advice, if you can afford to fix it, then dont modify it!
jcjc1
Active VIP Member
i couldn't find the vid but when brp did the gen5 turbo r release, one of the clips had all the chassis/engine changes and i remember something about the cylinder head. maybe it was increased cooling.
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greenthumb
Active VIP Member
jcjc1
Active VIP Member
thanks. revised head, new injectors, fuel rail...
Bnorth
Active VIP Member
What are you tuning with?
ctd
Active VIP Member
I'm curious the software, you are getting access to a lot of tables, scanner is critical.
HPT does not list Ski Doo unless things have changed. MapTun really limits critical table access, their canned tune files run well.
oler1234
Active VIP Member
torq-link. I got a copy of there software and patch cables. Typically only for dealer stuff. There is not scanner, we are tuning with a laptop.
Interesting to note, G4T has less boost but more timing. G5T has more boost but less timing especially in the 6000rpm range, go figure.
Interesting to note, G4T has less boost but more timing. G5T has more boost but less timing especially in the 6000rpm range, go figure.
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- Thread starter
- #19
All I’m doing is taking the sled to Riderz and having the maptun stage 1 installed as well as Joey’s Ibackshift kit with his ramps.
Shredder
Active VIP Member
That's the critical part that alot of people don't think about. Guys add power with pipes or tunes and have less than desirable results because they run the same clutching components as a stock sled. If that sled is actually making more power the clutching will need to be changed to get that power to the ground. Hopefully that clutching creates enough extra load to make use of the extra 20hp.
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