[HP Autosport]

I don't believe this has been posted on E90post so here it is:

Now introducing the next upgrade to your N55 based BMW, the aFe Stage 2 Cold Air Intake. This new unit produces a maximum of 17 horsepower and 23 lb-ft. of torque(This is AFE's claim).It out-flowed the factory intake system by an impressive 44% on the N55 E8x and E9X it was tested on. We all know how important it is on turbo cars for them to breathe well on both the intake and exhaust side.

This is a quality product that includes a heat shield to help keep under hood temps out of the intake as well as a heat-insulating molded plastic tube that not only replaces the stock intake but directs increased air flow with improved volumetric efficiency for optimum performance.

The one-piece heat shield requires little or no assembly and the filter is constructed with 100% polyurethane for long life and multiple cleaning cycles.

Installation takes about a hour following instructions and everything fit well.

After the install the improved throttle response immediately noticed. As for power, I am not going to rely on my butt dyno even though I can feel the additional horse power.
Dyno Charts:

Power mods for the purple line are: Berk DP and full exhaust, ETS FMIC, HPA Drop-in and ER N55 charge pipe with JB3 at 4 lbs boost over stock

Power mods for the green line are: Berk DP and full exhaust, ETS FMIC, HPA Drop-in, ER N55 charge pipe and ETS FMIC with JB3 at 4 lbs boost over stock as a warm up run.

***ETS FMIC alone made 15hp and 9tq at the wheels(SuperFlo numbers, Dynojet numbers will be higher)***

Power mods for the blue line are: Berk DP and full exhaust, ETS FMIC, HPA Drop-in, ER N55 charge pipe and ETS FMIC at 4 lbs boost over stock

Power mods for the red line are: Berk DP and full exhaust, ETS FMIC, HPA Drop-in, ER N55 charge pipe and ETS FMIC at 4.5 lbs boost over stock

Power mods for the black line are: Berk DP and full exhaust, ETS FMIC, HPA Drop-in, ER N55 charge pipe and ETS FMIC at 5 lbs boost over stock

AFE N55 Intake Dyno chart is the second one. As you can see in the second graph, the blue line, which was dated 6-22-11 HPA4 was the best result from the first graph back on June 22. The black and red are the back to back runs with the AFE N55 Intake. Down low the AFE intake may have lost a few hp, but it more than made up for it starting around 4800-4900 rpm and all the way to the top, with a max gain of roughly 7.5 hp at the wheels.

***Dyno chart shown is with Dynojet corrected numbers***

[Sam335ix]

Good post my man ^^^^

[divisionbell77]

Why bring up a 7 month old post for it, though?

[Noncom23]

Originally Posted by BimmerEngineer

Folks, NO CAI is going to give u more than 5-9 crank hp MAX. It's industry fact and most independent tuners and performance companies can & do, fudge dyno numbers.... Drop-in filters will only add about 1-2hp, and a little more turbo blowoff sound. Air intake upgrades like these and exhaust kits might >total 10-15 crank hp at most, not enough power to notice any real difference in acceleration, fact: (although your mind will make u think ur going faster). Also, a CAI or drop-in on these N55 cars has proven to be worthless heat soaks and mess with MAFS electronics.... The N55 is also (till a turbo upgrade is avail) limited to about 385-390 crank hp or about 350-365 wheel hp. Anything more will damage your engine. I'm shocked!!!! At the rediculious hp/tq numbers companies are trying to feed people. COBB, VISH & JB and a few others are the same, way over inflating perormance figures to sell products. I'm not bashing, just informing the rather uneducated (these days) public.

If this is the case, what modifications, by name
do you recommend to increase stock HP?
I am open to all ideas. Thx ahead.

[fasteddie222]

Originally Posted by Noncom23

If this is the case, what modifications, by name
do you recommend to increase stock HP?
I am open to all ideas. Thx ahead.

jb4 tune, downpipes, FMIC, meth...

[Sara]

Originally Posted by fasteddie222

jb4 tune, downpipes, FMIC, meth...

+1

[Noncom23]

Originally Posted by fasteddie222

jb4 tune, downpipes, FMIC, meth...

Thank You!

[fasteddie222]

Originally Posted by Noncom23

Thank You!

No problem and dont forget a charge pipe it wont give you any power but the oem one usually cracks

[335 oClock]

Originally Posted by Sara504

+1

sara he said JB not cobb

[Sara]

Originally Posted by 335 oClock

sara he said JB not cobb

yeah yeah yeah