Intake horns?
#21
04-30-2012, 05:42 PM
Diesel Bomber
The following 2 users liked this post by coors_man_2005:
double ought (05-31-2012),
Fire Power (04-30-2012)
#24
05-01-2012, 02:05 AM
You haven't posted any data to back it up.
False.
Thats the entire point of using it, reducing cold engine emissions.
I can't fix him, but I can help people that are actually capable of and willing to learn.
False.
Thats the entire point of using it, reducing cold engine emissions.
I can't fix him, but I can help people that are actually capable of and willing to learn.
#25
05-01-2012, 06:09 AM
Diesel Bomber
So your saying aftermarket company's who make grid heater relocation kits. Make them cause they worried about emissions. Or do they not know what they are for either? If that was true they would be making high flow egr kits and dpfkits. But no they remove them. Sure you can remove the grid with no probs except effect your cold start abbility.
---AutoMerged DoublePost---
At the time you turn the ignition key to the ON position the PCM/ECM looks at the IAT temperature and determiunes if the manifold is cold enough to needpre-heating. Typically this occurs when temperatures are below 55-65*F. You'll notice that the battery voltage will fall slightly more than normal during this time that the WAIT TO START light is lit. Once started the grid heater will continue to cycle on and off to maintain proper manifold temperature. There are 2 grid heater elements. The PCM/ECMwill determine if one or both elements will be used. Here are the times and temperatures you should see.
Intake Manifold Temperature Key ON position
Pre-Heat Cycle Time Ignition ON, Engine NOT Running
Post-Heat Cycle Ignition ON Engine Running Above 59F (15C) 0 Seconds No 15F to 59F (-10C to 15C) 10 Seconds Yes 0F to 15F (-18C to -10C) 15 Seconds Yes Below 0F (-18C) 30 Seconds Yes
When temperatures are below 0*F it’s suggested to cyclethegrid heater twice to help aid in starting. Block Heater use can offset intake temperatures, since the block will warm incoming air.
---AutoMerged DoublePost---
At the time you turn the ignition key to the ON position the PCM/ECM looks at the IAT temperature and determiunes if the manifold is cold enough to needpre-heating. Typically this occurs when temperatures are below 55-65*F. You'll notice that the battery voltage will fall slightly more than normal during this time that the WAIT TO START light is lit. Once started the grid heater will continue to cycle on and off to maintain proper manifold temperature. There are 2 grid heater elements. The PCM/ECMwill determine if one or both elements will be used. Here are the times and temperatures you should see.
Intake Manifold Temperature Key ON position
Pre-Heat Cycle Time Ignition ON, Engine NOT Running
Post-Heat Cycle Ignition ON Engine Running Above 59F (15C) 0 Seconds No 15F to 59F (-10C to 15C) 10 Seconds Yes 0F to 15F (-18C to -10C) 15 Seconds Yes Below 0F (-18C) 30 Seconds Yes
When temperatures are below 0*F it’s suggested to cyclethegrid heater twice to help aid in starting. Block Heater use can offset intake temperatures, since the block will warm incoming air.
Last edited by coors_man_2005; 05-01-2012 at 07:02 AM. Reason: Automerged Doublepost
#27
05-01-2012, 04:01 PM
I know how the grid heaters work and what they are for, I don't think it has anything to do with the intake horn replacement unless you want to delete it but I live in Chicago and I need the cold start help in winter. Yes, I know it's located under the air horn but like I say I need it.
Back to the reason for this post, I think that I can save some dollars if I change the intake horn when I do the deletes because I don't need to buy the EGR blocks, correct?
Back to the reason for this post, I think that I can save some dollars if I change the intake horn when I do the deletes because I don't need to buy the EGR blocks, correct?
#28
05-01-2012, 04:30 PM
Diesel Wrench
The grid heater in the intake is to heat the incoming air to help the engine warm up. I don't live in an emissions testing state, but I know well enough that you aren't going to test emissions on a cold engine so what difference would it make? Manufacturers aren't worried about meeting emissions in the first 5 minutes that the cold engine is running.
The following users liked this post:
BIGHORN08 (05-01-2012)
#29
05-01-2012, 05:34 PM
Diesel Bomber
I know how the grid heaters work and what they are for, I don't think it has anything to do with the intake horn replacement unless you want to delete it but I live in Chicago and I need the cold start help in winter. Yes, I know it's located under the air horn but like I say I need it.
Back to the reason for this post, I think that I can save some dollars if I change the intake horn when I do the deletes because I don't need to buy the EGR blocks, correct?
Back to the reason for this post, I think that I can save some dollars if I change the intake horn when I do the deletes because I don't need to buy the EGR blocks, correct?
#30
05-01-2012, 08:10 PM
Clearly you don't.
---AutoMerged DoublePost---
It hasn't stopped you from trying!
Thus reducing cold engine emissions.
They must meet emissions limits during the entire cycle of the engine, including cold starting.
Why do you think gas engines used to have air pumps (and now use lean burning)? To warm up the cat quicker so it will reduce emissions sooner.
---AutoMerged DoublePost---
It hasn't stopped you from trying!
I know well enough that you aren't going to test emissions on a cold engine so what difference would it make? Manufacturers aren't worried about meeting emissions in the first 5 minutes that the cold engine is running.
Why do you think gas engines used to have air pumps (and now use lean burning)? To warm up the cat quicker so it will reduce emissions sooner.
Last edited by Whargoul; 05-01-2012 at 08:10 PM. Reason: Automerged Doublepost
