why does cold air cause my boost to spike?
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From: st louis
why does cold air cause my boost to spike?
why does cold weather cause my boost to creep/spike?
would manual, or profec b help remedy this? if so wich is better. will have a to4s put on soon. need to know wich to go with.
did a search, didnt quite get the answer i was looking for after about an hour.
would manual, or profec b help remedy this? if so wich is better. will have a to4s put on soon. need to know wich to go with.
did a search, didnt quite get the answer i was looking for after about an hour.
Yes it is for sale.
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From: The Houston Club's Resident Lush.
A boost controller of any kind will help remedy this.
Colder air is denser which causes more air to enter your combustion chamber which results in more power and higher boost levels.
Profec B all the way
Colder air is denser which causes more air to enter your combustion chamber which results in more power and higher boost levels.
Profec B all the way
Last edited by FormerPorscheGuy; Nov 14, 2003 at 07:02 PM.
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From: San Lorenzo, California
If you are going to be going single, you had better be using an electronic boost controller.
Personally, I think it's kind of scary that you are going single and don't know why cold air makes the boost pressure raise with the stock ecu.....
Personally, I think it's kind of scary that you are going single and don't know why cold air makes the boost pressure raise with the stock ecu.....
Uber Newb.
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From: LSU - Baton Rouge, Louisiana
Colder air takes less energy to compress, and because your turbos are working from the same amount of exhaust gas (producing the same amount of power going into the compressor side), and are operating at the same efficiency (sane temp etc) they are compressing more air.
Ee / Cpe
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From: Gaithersburg, MD / WVU
Originally posted by DaedelGT
Colder air takes less energy to compress, and because your turbos are working from the same amount of exhaust gas (producing the same amount of power going into the compressor side), and are operating at the same efficiency (sane temp etc) they are compressing more air.
Colder air takes less energy to compress, and because your turbos are working from the same amount of exhaust gas (producing the same amount of power going into the compressor side), and are operating at the same efficiency (sane temp etc) they are compressing more air.
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From: Bethesda, MD
I have the exact same problem with stock turbos. I've got a little boost creep and a boost of about 12psi (2 too high) on full throttle...
I have an m2 cold air intake and its been about 40 degrees out... i just hate driving the car in the cold weather but I gotta
personally, because i plan to mod the car more im going get a power fc in there ^_^
I have an m2 cold air intake and its been about 40 degrees out... i just hate driving the car in the cold weather but I gotta
personally, because i plan to mod the car more im going get a power fc in there ^_^
uid 0
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From: San Francisco, CA
Get your pfc and turn the boost down Cold air is good if you know that you're not gonna lean out under high boost, but definitely a no-no if you're not sure or if you think you're gonna lean out (i.e. more air cos it's denser + same amount of fuel = higher air/fuel ratio)
Cold air is good if you know that you're not gonna lean out under high boost, but definitely a no-no if you're not sure or if you think you're gonna lean out (i.e. more air cos it's denser + same amount of fuel = higher air/fuel ratio)
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From: st louis
Personally, I think it's kind of scary that you are going single and don't know why cold air makes the boost pressure raise with the stock ecu..... [/B][/QUOTE]
i have pfc, I just wanted to know if the contoller anticipates and corrects this problem.
i know cold air is denser I just didnt know why it made the psi higher.
basically the way you guys describe this phenomenon; if i had a super efficient intercooler that cooled the air to an unacheivable low temp i would experience the same effect? i know an intercooler cant work that well Im just trying to understand the physics of this.
i have pfc, I just wanted to know if the contoller anticipates and corrects this problem.
i know cold air is denser I just didnt know why it made the psi higher.
basically the way you guys describe this phenomenon; if i had a super efficient intercooler that cooled the air to an unacheivable low temp i would experience the same effect? i know an intercooler cant work that well Im just trying to understand the physics of this.
Yes it is for sale.
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From: The Houston Club's Resident Lush.
Originally posted by veilsidefd3
basically the way you guys describe this phenomenon; if i had a super efficient intercooler that cooled the air to an unacheivable low temp i would experience the same effect? i know an intercooler cant work that well Im just trying to understand the physics of this.
basically the way you guys describe this phenomenon; if i had a super efficient intercooler that cooled the air to an unacheivable low temp i would experience the same effect? i know an intercooler cant work that well Im just trying to understand the physics of this.
A boost controller will limit your boost levels by allowing you to manually control your wastegates.
Last edited by FormerPorscheGuy; Nov 15, 2003 at 03:44 PM.
