[Basil335i]

Ok guys I ordered an Injen intake for my 2011 n55 335i and I love it! Install was pretty annoying but over all product is great! I love the way it sounds! Now time to review extreme power house. I made my order I think Tuesday and I received my order on Thursday super fast shipping! Made me super happy lol they ship fast I will defiantly be ordering from them again! Everything came in the box as advertised!

[olivojoe]

How was the install? Where does it mate up to? Did it come with instructions?

[Basil335i]

Originally Posted by olivojoe

How was the install? Where does it mate up to? Did it come with instructions?

The install was straight forward and yes instructions came with it it was annoying tbh but you should get it down and it mates to the intake hose at the bottom/left side of the engine! If you do order it get it from extreme power house that's where I got mine they are the cheapest and I got mine shipped really fast..

[BKBMW335I]

Originally Posted by Basil335i

Ok guys I ordered an Injen intake for my 2011 n55 335i and I love it! Install was pretty annoying but over all product is great! I love the way it sounds! Now time to review extreme power house. I made my order I think Tuesday and I received my order on Thursday super fast shipping! Made me super happy lol they ship fast I will defiantly be ordering from them again! Everything came in the box as advertised!

If you don't mind me asking, how much did you pay for it??

[Basil335i]

Originally Posted by BKBMW335I

If you don't mind me asking, how much did you pay for it??

I got it for $315 shipped!

[Hakentt]

I believe these intakes are total scan and a rip off. They only give more intake noise but reduce power. They suck hot air from the engine back and reduce horsepower.
Stock air box is the best, it shields from hot engine bay air, and draws cold air from outside

[timothy2001]

Install was pretty easy and if you like the noise maybe it's for you.

I removed mine and went back to stock air box with a K&D and this is what I prefer.

Butt dyno tells me there is no difference in performance but there are some threads that will hotly debate that.

Personal preference unlike a down pipe, tune or FMIC where there is true measurable performance upgrade.

My $.02

[AirbusPilot]

Originally Posted by Hakentt

I believe these intakes are total scan and a rip off. They only give more intake noise but reduce power. They suck hot air from the engine back and reduce horsepower.
Stock air box is the best, it shields from hot engine bay air, and draws cold air from outside

This particular intake looks like a long metal tube, which will get VERY HOT.

[wgknestrick]

Originally Posted by Hakentt

I believe these intakes are total scan and a rip off. They only give more intake noise but reduce power. They suck hot air from the engine back and reduce horsepower.
Stock air box is the best, it shields from hot engine bay air, and draws cold air from outside

I see you are overwhelming us with data to support your false argument. Hot engine air means very little to a turbocharged and intercooled car. Cooling is done at the ic. Short rams have been proven on countless platforms over airboxes.

[Dylanize]

Originally Posted by Hakentt

I believe these intakes are total scan and a rip off. They only give more intake noise but reduce power. They suck hot air from the engine back and reduce horsepower.
Stock air box is the best, it shields from hot engine bay air, and draws cold air from outside

Sounds like your talking out of your ass here bud...

1.) Intercooler

2.) BMS intake has proven gains over stock, look it up. (not sure about injen)

[mike@x-ph.com]

Originally Posted by Hakentt

I believe these intakes are total scan and a rip off. They only give more intake noise but reduce power. They suck hot air from the engine back and reduce horsepower.
Stock air box is the best, it shields from hot engine bay air, and draws cold air from outside

Care to show a dyno proving your claims?

Originally Posted by AirbusPilot

This particular intake looks like a long metal tube, which will get VERY HOT.

That does not mean much on turbo cars

Originally Posted by timothy2001

Butt dyno tells me there is no difference in performance but there are some threads that will hotly debate that.

On a stock car, there will be no power increase
on a fully bolt on car, you get around 10 whp after 5000 rpm

[mike@x-ph.com]

OP,
Thank you for the review !!!

[AirbusPilot]

Originally Posted by mike@x-ph.com

Care to show a dyno proving your claims?



That does not mean much on turbo cars



On a stock car, there will be no power increase
on a fully bolt on car, you get around 10 whp after 5000 rpm

Well, I'm not much on dyno numbers, and prefer track results to compare. I know that a metal tube attached to that turbo will get extremely hot on a car with a closed hood. And I also believe that hot air won't help performance.

Additionally, it's a LONG metal tube, which hurts flow. If it does out perform the stock intake, it's because the stock intake would have a severe restriction near the turbo, which I don't know is the case.

[AirbusPilot]

Here's a pic of where the restriction is on the stock system. That looks like a significant restriction. If the metal tube intake is better than stock, it's because they improved the design at this junction.

[mike@x-ph.com]

Originally Posted by AirbusPilot

Well, I'm not much on dyno numbers, and prefer track results to compare. I know that a metal tube attached to that turbo will get extremely hot on a car with a closed hood. And I also believe that hot air won't help performance.

Additionally, it's a LONG metal tube, which hurts flow. If it does out perform the stock intake, it's because the stock intake would have a severe restriction near the turbo, which I don't know is the case.

Can you please show me a track result proving that an aftermarket intake made the car lose power?

You are making claims with no proof, when the most respected BMW tuners and dyno sheets show otherwise

Tests were done on the N54 engine proving these claims to be a myth. If you did not have a chance to see them, i will be more than happy to post the full tests and results on here

[AirbusPilot]

Originally Posted by mike@x-ph.com

Can you please show me a track result proving that an aftermarket intake made the car lose power?

You are making claims with no proof, when the most respected BMW tuners and dyno sheets show otherwise

Tests were done on the N54 engine proving these claims to be a myth. If you did not have a chance to see them, i will be more than happy to post the full tests and results on here

I come from the corvette/muscle car world. The c6, for example, "cold" air intakes from the aftermarket rarely show a gain at the track, but always show big gains on the dyno. What muddies the water is you must tune the engine to see any gains, and at that point it's hard to tell which gave the HP gain, the intake, the tune or both?

My personal testing on my 09' Z06 (no tune) showed little gain in trap speed. Less than one mph, not enough of a change to prove anything.

Looking at the pic of the N55, I'm convinced that any gains via an aftermarket intake would come from a larger and smoother transition AT the turbo inlet, along with a consistent diameter pipe along side the engine. I highly doubt the "cone filter on a tube" that comes before that is better than the stock filter housing from BMW.

The "claims" I made about this particular intake don't require me to prove them.

The first claim was that a metal tube intake, in the engine compartment and placed right above the exhaust manifold and turbo, WILL get much hotter that a non metal (stock) intake tube. This is scientific fact, and requires no proof on my part. Your response was it doesn't matter on a turbo car.

The other claim I made was that a long metal tube creates an air restriction. You can test this yourself. Try breathing through 6" of garden hose, then try 6 ft. This is also scientific fact.

Those facts are what I base my claims on. If this style of intake shows a gain, it's only because the factory tube inlet near the turbo is very restrictive, and the aftermarket one is less so.

Obviously, there are packaging issues in this engine compartment.

If someone designed an section of intake from the factory intake box to the turbo inlet that removed or at least improved that section, they'd have a winner.

I'm going to probably install a stage 2 later this year, and I noticed Pure Turbo has designed a much better turbo inlet transition. They did that for a reason.

[JETmn]

Originally Posted by AirbusPilot

The other claim I made was that a long metal tube creates an air restriction. You can test this yourself. Try breathing through 6" of garden hose, then try 6 ft. This is also scientific fact.

Did you happen to see that the stock intake is the same length as the Injen? So how is the Injen adding restriction over the stock intake? I agree that it probably isn't making much more HP, but your argument is not valid.

As for the track results comment, that is also very difficult. The dyno is going to show more accurate results than at the track. You have WAY too many variables to see small gains at the track. You can see different times/speeds day to day at the track with no changes, nonetheless trying to see a 10hp gain.

[AirbusPilot]

Originally Posted by JETmn

Did you happen to see that the stock intake is the same length as the Injen? So how is the Injen adding restriction over the stock intake? I agree that it probably isn't making much more HP, but your argument is not valid.

As for the track results comment, that is also very difficult. The dyno is going to show more accurate results than at the track. You have WAY too many variables to see small gains at the track. You can see different times/speeds day to day at the track with no changes, nonetheless trying to see a 10hp gain.

Actually, the Injen is much longer than the stock intake. I'm talking about tubing, which the Injen is all tubing, and places the cone filter on the left side of the engine bay, while the stock intake tubing stops around the top of the engine, where it then opens up substantially to a large bell mouth, with the filter just over the top.

[wgknestrick]

Originally Posted by AirbusPilot

Actually, the Injen is much longer than the stock intake. I'm talking about tubing, which the Injen is all tubing, and places the cone filter on the left side of the engine bay, while the stock intake tubing stops around the top of the engine, where it then opens up substantially to a large bell mouth, with the filter just over the top.

Injen is shorter and length does not affect CFM as much as DIA anyway.
https://en.wikipedia.org/wiki/Hagen%...uille_equation



You can see that "L" only has a 1:1 ratio (to pressure loss) while "D" is a squared denominator. Small increases in "D" can yield huge results.

Injen is a consistent DIA throughout. The air box effectively extends all the way to the front grill, well past the Injen cone filter. The plastic tube that snakes back up over the valve cover is the key piece to replace along with the panel filter.

[AirbusPilot]

Originally Posted by wgknestrick

Injen is shorter and length does not affect CFM as much as DIA anyway.
https://en.wikipedia.org/wiki/Hagen%...uille_equation



You can see that "L" only has a 1:1 ratio (to pressure loss) while "D" is a squared denominator. Small increases in "D" can yield huge results.

Injen is a consistent DIA throughout. The air box effectively extends all the way to the front grill, well past the Injen cone filter. The plastic tube that snakes back up over the valve cover is the key piece to replace along with the panel filter.

Looks longer to me by about 12-18".

Once it crosses over the top of the engine and proceeds down to the turbo, it does look superior to me. Thanks for the mathematics, it's helpful.

I agree 100% with your last statement, but don't think the panel filter is the issue.

[Mannix]

If I was to come up with an aftermarket part and market it to the public as a mod which increases performance, this is what I would do:

Make several dyno runs stock.
Make several dyno runs with the mod.

Compare the lowest dyno run made stock with the highest dyno run made with the mod and say:

"Look! See! With this mod you will gain X horsepower! The dyno proves it!"

[mike@x-ph.com]

Originally Posted by Mannix

If I was to come up with an aftermarket part and market it to the public as a mod which increases performance, this is what I would do:

Make several dyno runs stock.
Make several dyno runs with the mod.

Compare the lowest dyno run made stock with the highest dyno run made with the mod and say:

"Look! See! With this mod you will gain X horsepower! The dyno proves it!"

it is agreed upon that intake on its own does not add power.
Only when car is fully bolt on. Even then increase is not much.

I was discussing the statements (with no proof whatsoever) that said adding an aftermarket intake makes the car lose power.