K&n
#2
I did not notice any difference when I swapped the stock element for a K&N drop in element for the stock airbox. I suspect it improved airflow a little, but not enough to affect your car's ability to cope with it, IMO.
Now removing the stock airbox and putting on a K&N cone filter, that's a whole 'nother ball game. No other single mod I've done so far had anywhere near the impact of getting that airbox off. I suspect you'd need at least a FCD if you went that route, and you'd better keep an eye on your A/F ratio.
Now removing the stock airbox and putting on a K&N cone filter, that's a whole 'nother ball game. No other single mod I've done so far had anywhere near the impact of getting that airbox off. I suspect you'd need at least a FCD if you went that route, and you'd better keep an eye on your A/F ratio.
#3
if u go witha drop in k&n you should gain about .5 psi more on an otherwise completely stock car. that is what myfriend have gotten on his s4. thought he said it wasnt really a noticeble gain.
if you decide to go with a cone style intake get the fcd since you will be hitting fuel/boost cut.
if you decide to go with a cone style intake get the fcd since you will be hitting fuel/boost cut.
#5
I picked up a used one from ebay (fipk) and installed it in about an hour, my car was hell to start right after i got it on, I think some of the cleaning solution was still in the filter, and my exhaust popped a few times (just like a few puffing sounds followed by a doughnut of exhaust gasses), now it runs fine, no more popping, I can hear a little bit of a difference beneath the hood, but I imagine I need to fabricate a heat shield before I'll notice any real differences. It does seem to pull a little bit stronger up hills than it used too, but I'm still drag limited at 110. :P
#6
Get a cone filter. Effects of the cone filter: You might notice a small difference in power, but most likely not, you will hear your turbo spool a lot louder, and thats about it. You wont even be close to fuel cut. Now if you put a 3" downpipe and midpipe on then you would need the fcd. If your planning on increasing the power of the car by any significant amount, just start saving for a Haltech, It'll make everything a lot simpler in the long run. Stock ecu doesn't like much else but stock.
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