Quote:
Originally Posted by canu_50
Question for you, Since the Injen intake is leaning out my A/Fr, why i am having backfire when shifting under low rpm(up to 3800rpm). It might have nothing to do with the Intake, just happened to happen after i installed it.
It seems it is coming from the mid-pipe, But it might be since i am running a bit leaner, my cylinder temp goes up a little bit, and it might be killing my cat or i don't know.
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It's hard to say since the Injen intake seems to be the biggest hit or miss for people from what I've read here on the forums. I won't profess to be able to debunk this but let me ask a few more questions :
1) Are you running much leaner? Do we know for sure? Are you getting way better fuel economy since most of what we do in cruise is under 3k RPM, did you mileage go up significantly? Quantifying how much leaner would be helpful as well.
2) I assume the rest of car is OEM stock, so you're getting a popping sound from the mid-pipe (post-cat) after the intake install?
3) Cylinder temp going up - we've all got that analog gauge - how much more significantly is the temp going up?
4) Lastly, did you put the stock OEM intake back on and see if all these issues went away? I'm particularly curious about the cylinder temp going up bit - that shouldn't be the case and certainly not to the point where temps have gone up that acutely... Hmmm.
Bob @ Drift-Office, LLC