How do I eliminate the 18psi limp mode with my 180/77
#1
Super Member
Thread Starter
How do I eliminate the 18psi limp mode with my 180/77
My car will hit limp mode as soon as I hit 18psi of boost and then I have to turn the car off and restart it otherwise the car will just bog down anything over 3k rpm. I have all cooling and exhaust mods necessary. Will a tune disable or raise the limp mode to at least 20psi? What are you guys doing whoever has this same setup? Or do I switch back to a 180/83 setup?
#4
Super Member
It basically remaps your input at the sensor.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
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FunkTron (02-27-2017)
#5
MBWorld Fanatic!
It basically remaps your input at the sensor.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
#6
MBWorld Fanatic!
It basically remaps your input at the sensor.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
In "lay" terms:
Say a wealthy investor tells his "nanny" that he's measured at nine inches. This is all well and good, per se.
---Except, he's measuring from the exhaust, to the tip, so-to-speak. At the end of the night, the "nanny" sees six inches, even though he's really carrying the "extra three".
This is how devices such as these can help this situation, if you follow the euphemism.
Be advised, you will have to re-scale your ECU, to make everything play nice (since your ECU is really only programmed to see X amount of pressure).
Hope that helps.
Certainly are pushing the threshold of the superchargers efficiency.
Last edited by jmb614; 09-21-2015 at 09:25 AM.
#7
Super Member
This......
https://splitsec.com/product/vc3-100-voltage-clamp/
You splice into to the map sensor cable and set the voltage to @4.5v......ish. ECU goes ape sh*t once signal hits 5v with high boost. A dyno tune is always good to have done after install so you can get the afr's in check.
https://splitsec.com/product/vc3-100-voltage-clamp/
You splice into to the map sensor cable and set the voltage to @4.5v......ish. ECU goes ape sh*t once signal hits 5v with high boost. A dyno tune is always good to have done after install so you can get the afr's in check.
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#8
https://splitsec.com/
Welcome to the next level of frustrations. Map Clamp it and call it a day......
Welcome to the next level of frustrations. Map Clamp it and call it a day......
just got the map clamp today and want to fit it next week
Going 77sc and 185mm cp
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FunkTron (02-27-2017)
#12
Senior Member
thats a Weistec blower and fixed pulley with a EC tune --i wonder why the fixed pulley with OEM blower has issues like the infamous hiccup
its an enigma
#14
Super Member
This video explains and helps with the install!
#15
Super Member
#16
Thanks buddy
Your setup looks sick
All you need to do is to splice the wires going to the map sensor. I made the wire long enough to place the Map Clamp in this location....
This video explains and helps with the install!
https://www.youtube.com/watch?v=coZVHLkzM7I
Your setup looks sick
All you need to do is to splice the wires going to the map sensor. I made the wire long enough to place the Map Clamp in this location....
This video explains and helps with the install!
https://www.youtube.com/watch?v=coZVHLkzM7I
The following users liked this post:
EREBUS (02-27-2017)
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Scrapile (03-18-2018)
#19
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Join Date: Sep 2016
Location: Albania
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e220 cdi 2005
My car will hit limp mode as soon as I hit 18psi of boost and then I have to turn the car off and restart it otherwise the car will just bog down anything over 3k rpm. I have all cooling and exhaust mods necessary. Will a tune disable or raise the limp mode to at least 20psi? What are you guys doing whoever has this same setup? Or do I switch back to a 180/83 setup?
I restarted the car and was back in normal. No check lights on the dash.
any idea what to do?
#21
MBWorld Fanatic!
#22
So i I fitted the crank pulley without the map clamp and it drives fine
onky issue now is the charger is shutting off at 230kmh
is this due to the clamp nt fitted ?
All you need to do is to splice the wires going to the map sensor. I made the wire long enough to place the Map Clamp in this location....
This video explains and helps with the install!
https://www.youtube.com/watch?v=coZVHLkzM7I
onky issue now is the charger is shutting off at 230kmh
is this due to the clamp nt fitted ?
All you need to do is to splice the wires going to the map sensor. I made the wire long enough to place the Map Clamp in this location....
This video explains and helps with the install!
https://www.youtube.com/watch?v=coZVHLkzM7I
#23
Super Member
Not sure of your specific build, but it sounds like you're overheating the charge air man. Been watching the IATs? Coolant pump in good order?
#24
MBWorld Fanatic!
#25
Super Member
This was my first data log in a recent mile event a few weeks ago. I built an entirely new intercooler system and was running it on the CLS for data. My heads were lifting and blowing coolant out the reservoir during these data logs. These figures were taken with the Map sensor (clamped) after all three water to air intercoolers. I should have over 20 psi once I remove the factory intercooler (working on intercooler revision #4)
Map clamp only. No fairy dust or bullsh*t tuning claims.
Yeah, the IAT's? 89 degrees at the airstrip. Engine Bay tank was iced down (2.25 gallons) and using 49 meth/ 51 water. Wicked burn out jumped my IAT's a tad and sitting in staging didn't help. Regardless, not a system out there could do that. That's over a mile @ WOT. Just say'in?
Map clamp only. No fairy dust or bullsh*t tuning claims.
Yeah, the IAT's? 89 degrees at the airstrip. Engine Bay tank was iced down (2.25 gallons) and using 49 meth/ 51 water. Wicked burn out jumped my IAT's a tad and sitting in staging didn't help. Regardless, not a system out there could do that. That's over a mile @ WOT. Just say'in?
Last edited by EREBUS; 04-05-2017 at 01:48 AM.