sizemoremk
Registered User
Hey guys!
Just pondering some things here about FMICs and N20... FMIC not being an option...
I guess I have some other underlying questions as well...
I understand that that the ACT temp sensor will retard timing when the heat goes up. Why does this need to happen?
I also read that for every 50 HP of N20 that you need to retard the timing a degree or two... why is this required?
If hot = less dense = a need to retard the timing?
then why does
N20 = more dense = a need to retard timing?
Is it the heat itsef, and not just the density of the air as a result of heat, that creates a need to retard timing?
I wouldn't think a 200ish degree air charge "temperature itself" would make much of a diffrence inside the comnbustion chamber (other than density)... My understanding is the the reason my SC hauls so much more A$$ on a cool night, is the density of the air charge, not necessarily the temprature of it; understanding that the two are related.
From what I read the FMIC would allow you to keep the timing more advanced via the ACT temp already.
My question is why would cooling by FMIC, and the cooling effect of N2O be any different?
By the way, I am not talking about a spray onto the IC N2O setup, I am talking about into the intake N2O Mine is in the lower IC tube before the ACT sensor.
My understanding is that the N2O just releases extra O2 to be burned, and that the cooling is more of a side effect as it is being released.
Which creates the more dense charge?
The extra O2 released by N2O creating a more dense air charge.
OR
The FMIC
I found a few plaes that said N20 come out the bottle at about -125 degrees F. I know the N20 is only a small percentage of the air charge, but I read a few differnt places that the entire air charge, generically speaking, would be between 60-75 degrees cooler, meaning 6-7% more HP correct, and that is just from the temp change...
But even 50 degrees cooler seems to me. I would think that the cooling effect of N20 would be very close, perhaps even better than the cooling effect of the FMIC. I know that FMIC would be an "all the time mod," and also, the pressure drop is better on the FMIC, but my car is quick enough on the street, I only need the power every once in a blue moon when I get to the dragstrip...
Any clarifications to make???
Thanks for looking!
Just pondering some things here about FMICs and N20... FMIC not being an option...
I guess I have some other underlying questions as well...
I understand that that the ACT temp sensor will retard timing when the heat goes up. Why does this need to happen?
I also read that for every 50 HP of N20 that you need to retard the timing a degree or two... why is this required?
If hot = less dense = a need to retard the timing?
then why does
N20 = more dense = a need to retard timing?
Is it the heat itsef, and not just the density of the air as a result of heat, that creates a need to retard timing?
I wouldn't think a 200ish degree air charge "temperature itself" would make much of a diffrence inside the comnbustion chamber (other than density)... My understanding is the the reason my SC hauls so much more A$$ on a cool night, is the density of the air charge, not necessarily the temprature of it; understanding that the two are related.
From what I read the FMIC would allow you to keep the timing more advanced via the ACT temp already.
My question is why would cooling by FMIC, and the cooling effect of N2O be any different?
By the way, I am not talking about a spray onto the IC N2O setup, I am talking about into the intake N2O Mine is in the lower IC tube before the ACT sensor.
My understanding is that the N2O just releases extra O2 to be burned, and that the cooling is more of a side effect as it is being released.
Which creates the more dense charge?
The extra O2 released by N2O creating a more dense air charge.
OR
The FMIC
I found a few plaes that said N20 come out the bottle at about -125 degrees F. I know the N20 is only a small percentage of the air charge, but I read a few differnt places that the entire air charge, generically speaking, would be between 60-75 degrees cooler, meaning 6-7% more HP correct, and that is just from the temp change...
But even 50 degrees cooler seems to me. I would think that the cooling effect of N20 would be very close, perhaps even better than the cooling effect of the FMIC. I know that FMIC would be an "all the time mod," and also, the pressure drop is better on the FMIC, but my car is quick enough on the street, I only need the power every once in a blue moon when I get to the dragstrip...
Any clarifications to make???
Thanks for looking!