FMIC in cold weather

Rawyzf

Contributor
:
2011 Mazda CX-9 GT AWD
OK....I plan on getting a FMIC in the near future, not sure which one yet.

Now, how does the FMIC handle cold weather? In MN it gets pretty damn cold, and I use my MSP as an everyday driver. Will having a FMIC hurt the car at all in the winter in any way?

Thanks,
Ryan
 
mazdaspeed75 said:
Watch for fuel cut You will hit it easier in cold weather .
Actually I don't belive it affects fuel cut... Only a CAI would do that because everything that happens after the MAF sensor will not be affected by that. Just a thought though.
 
yeah, when I switched from a CAI to an SRI during the winter I noticed fuel cut much earlier at the same temperatures.
 
TheJohnny said:
yeah, when I switched from a CAI to an SRI during the winter I noticed fuel cut much earlier at the same temperatures.
do you mean when you switched from a sri to a cai you noticed fuel cut much earlier?
 
This may sound stupid but what does Fuel cut feel like? I am guessing you only have to worry about it you up the boost about the 9.5 right?
 
The opposite actually. When I went from my INJEN to a SRI using the INJEN I noticed fuel cut almost instantly around 8 psi and up. I went to the SRI to just see what would happen being that people were saying that turbo cars don't need the CAI because of the Intercooler so I tried it out and bam, boom, smash, FUEL-CUT hit hard. I hate fuel cut. It's not really fuel cut, it's spark cut. If you look at your A/F guage when it hits, the thing is pegged into the green giving the presumption that it isn't fuel cut but spark cut. Just my opinion. Good luck and take care.
 
It is an ignition cut because that is the only safe way to do it, pulling all the fuel out would be stupid if you are trying to protect the motor
 
Normally, the colder the better but the MSP seems to be poorly designed, so I can't say. There should be no problem. Have you ever considered that the aluminium FMIC might not like the road salt that much???
 
bill harvey said:
It is an ignition cut because that is the only safe way to do it, pulling all the fuel out would be stupid if you are trying to protect the motor
I agree, pulling fuel at WOT would cause the engine to lean out and detonate for a short time...
 
^^^ Agreed, in theory, there is no negative, it just makes the FMIC VERY GOOD at getting rid of heat. The density thing is a problem only with the MSP because of it's design. (Fuel Cut)
 
iON Performance said:
Rawyzf - up here in Canada, there have been no problems reported by our customer's using our FMIC kits. It's much colder here during the winters ;)
Thanks for the updates!

Now, I just have to figure which one to get.

-Ryan
 
Demonic-Speed said:
This may sound stupid but what does Fuel cut feel like? I am guessing you only have to worry about it you up the boost about the 9.5 right?
"fuel" cut, or whatever you want to call it feels like hitting a wall. It can scare the crap out of you...just imagine hitting the rev limiter at 4,000 RPM; same thing.
 
03MSP said:
"fuel" cut, or whatever you want to call it feels like hitting a wall. It can scare the crap out of you...just imagine hitting the rev limiter at 4,000 RPM; same thing.

ok... after some testing fuel cut (spark cut whatever you all it) does come a lot quicker at colder air..... once i installed my Injen air filter onlu and raidsed up the boost to 10psi it was ok, but the same day i drove back home at night it was cutting boost like crazy so i had to lower it back to 8psi.. so now after i installed my custom made FCD i run 1bar of boost everyday and love the mazda even more....next week i'll be doing my custom downpipe and off to the track we go.....i'll let you know what this bad boy can do....
 

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