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BMW 3-Series and 4-Series Forum (F30 / F32) | F30POST > Technical Forums > N20, N26, B46, B48 Turbo Engine / Drivetrain / Exhaust Modifications > INJEN Intake DIY install supplement guide for 328i F30
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      04-13-2015, 10:13 AM   #45
nyc4er
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I personally like the way the injen intake looks better than the aFe momentum intake. And the injen is cheaper too! aFe looks more plasticy
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      04-14-2015, 10:09 AM   #46
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Quote:
Originally Posted by nyc4er View Post
I personally like the way the injen intake looks better than the aFe momentum intake. And the injen is cheaper too! aFe looks more plasticy
I just recently switched from the Injen and really like the aFe better.


PRO's
1 - Lighter
2 - More quiet
3 - Plastic, could be less absorbent to heat. Injen would get too hot to touch.
4 - Simpler design, less congestion in the engine compartment. Makes installation and removal literally a 2 minutes job.

CON's
1 - Doesn't fit 100% with the BMS OCC.
2 - More expensive (I stole mine for $100)
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      04-14-2015, 10:37 AM   #47
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Quote:
Originally Posted by f30luxline View Post
I just recently switched from the Injen and really like the aFe better.


PRO's
1 - Lighter
2 - More quiet
3 - Plastic, could be less absorbent to heat. Injen would get too hot to touch.
4 - Simpler design, less congestion in the engine compartment. Makes installation and removal literally a 2 minutes job.

CON's
1 - Doesn't fit 100% with the BMS OCC.
2 - More expensive (I stole mine for $100)
aside from this. performance wise do you feel any difference, like sharper throttle than injen better end pull ect. ?
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      04-14-2015, 10:51 AM   #48
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Quote:
Originally Posted by rustyminded View Post
aside from this. performance wise do you feel any difference, like sharper throttle than injen better end pull ect. ?
My initial thoughts were that there was slightly more low end power. As if the power ramped up quicker. Per my recent dyno chart, the power does seem to ramp up quicker but I also have the ER IC and full charge pipes that can contribute to this new power curve.

Another big plus was that with the Injen and map 7 I would get not so smooth shifts between 2.2k and 2.8k. I thought this was the behavior of map 7, maybe the car needed to be driven harder on map 7 as shifting after 2.8k would be smooth. Also at times I would get WG flutter during these lower end shifts. Both of these symptoms have been eliminated with the aFe. Note this behavior was not consistent.
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      04-14-2015, 06:57 PM   #49
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Quote:
Originally Posted by f30luxline View Post
I just recently switched from the Injen and really like the aFe better.


PRO's
1 - Lighter
2 - More quiet
3 - Plastic, could be less absorbent to heat. Injen would get too hot to touch.
4 - Simpler design, less congestion in the engine compartment. Makes installation and removal literally a 2 minutes job.

CON's
1 - Doesn't fit 100% with the BMS OCC.
2 - More expensive (I stole mine for $100)
Great dude, thanks for that. I've been stalling on the aFe scorcher/intake kit for some time now. That pretty much settles it.
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      04-15-2015, 05:47 PM   #50
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Does anyone know where I can buy the two torx screws included in the injen intake kit?
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      04-15-2015, 07:19 PM   #51
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[QUOTE=lesnica;17750521]Does anyone know where I can buy the two torx screws included in the injen intake kit?[/http://www.injenonline.com/mm5/merchant.mvc?Store_Code=IN&Screen=PROD&Category_Co de=HD&Product_Code=X-6072

Took me forever to find this site, I kept trying to find them under the actual Injen retail website. You can find all the replacement prts here, think the order has to be like 10-20 bucks so get ready to buy some extra sleeves/liscence plate or two.
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      04-16-2015, 11:01 AM   #52
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[QUOTE=RGR275MAF;17751037]
Quote:
Originally Posted by lesnica View Post
Does anyone know where I can buy the two torx screws included in the injen intake kit?[/http://www.injenonline.com/mm5/merchant.mvc?Store_Code=IN&Screen=PROD&Category_Co de=HD&Product_Code=X-6072

Took me forever to find this site, I kept trying to find them under the actual Injen retail website. You can find all the replacement prts here, think the order has to be like 10-20 bucks so get ready to buy some extra sleeves/liscence plate or two.
Thanks, my original screws are kind of stripped, and the two screws that came with the intake literally flew away with the wind.
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      04-18-2015, 12:09 AM   #53
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i just did my install today and honestly I am noticing my mpg decreasing pretty drastically for some reason, I double checked everything and they are all attached and seemed secure (I put the clams over the rubber sleeve which connects the two pipes to make sure there is no leak. the rubber sleave wasnt in the instructions) and no warnings and eevrything sounds great, just that gas decreases at a scary rate :/ Any thoughts? reset ECU maybe?
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      04-18-2015, 08:27 AM   #54
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Quote:
Originally Posted by Defalt View Post
i just did my install today and honestly I am noticing my mpg decreasing pretty drastically for some reason, I double checked everything and they are all attached and seemed secure (I put the clams over the rubber sleeve which connects the two pipes to make sure there is no leak. the rubber sleave wasnt in the instructions) and no warnings and eevrything sounds great, just that gas decreases at a scary rate :/ Any thoughts? reset ECU maybe?
i did battery rest & let the car adapt to slow driving. go on it easy & it will be great
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      04-18-2015, 11:12 AM   #55
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Quote:
Originally Posted by rustyminded View Post
i did battery rest & let the car adapt to slow driving. go on it easy & it will be great
ahh I see thank you for the tip! Ill give it some time then :]
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      04-20-2015, 10:28 PM   #56
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Anybody know where to get the 0.242 in self lock rivets? Its the black ones that just snap in the intake lower box. Mine broke off(they are plastic).
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      04-21-2015, 06:26 AM   #57
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Quote:
Originally Posted by bimmerillini95 View Post
Anybody know where to get the 0.242 in self lock rivets? Its the black ones that just snap in the intake lower box. Mine broke off(they are plastic).
Any type of panel fastener will work, 1/4" is what I used when I sold my Injen. I had to trim them down as they were too long but it works.

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      04-21-2015, 09:33 AM   #58
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Where exactly can you get these mate, i tried home depot and autozone, couldn't find anything similar
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      04-21-2015, 09:34 AM   #59
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Quote:
Originally Posted by rustyminded
Quote:
Originally Posted by Defalt View Post
i just did my install today and honestly I am noticing my mpg decreasing pretty drastically for some reason, I double checked everything and they are all attached and seemed secure (I put the clams over the rubber sleeve which connects the two pipes to make sure there is no leak. the rubber sleave wasnt in the instructions) and no warnings and eevrything sounds great, just that gas decreases at a scary rate :/ Any thoughts? reset ECU maybe?
i did battery rest & let the car adapt to slow driving. go on it easy & it will be great
Hey i tried the battery reset but the mpg still drops down drastically, it is seriously scaring me out right now.
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      04-21-2015, 10:18 AM   #60
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I would return it to stock and see what happens. Install should be less than an hour.
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      04-21-2015, 10:34 AM   #61
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Quote:
Originally Posted by bimmerillini95 View Post
Hey i tried the battery reset but the mpg still drops down drastically, it is seriously scaring me out right now.
weird, mine doesn't change at all. get it back to stock and see but make accurate comparison. it takes me less than 10min. to change intake
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      04-21-2015, 11:11 AM   #62
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Quote:
Originally Posted by bimmerillini95 View Post
Hey i tried the battery reset but the mpg still drops down drastically, it is seriously scaring me out right now.
Often people subconsciously drive the car harder with new performance parts on their car, killing mileage. Could this be you?
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      04-21-2015, 11:11 AM   #63
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Quote:
Originally Posted by eric@helix
Quote:
Originally Posted by bimmerillini95 View Post
Hey i tried the battery reset but the mpg still drops down drastically, it is seriously scaring me out right now.
Often people subconsciously drive the car harder with new performance parts on their car, killing mileage. Could this be you?
Lol no mate been going eco pro actually these few days.
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      04-21-2015, 11:48 AM   #64
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Just to make sure, battery reset is by disconnecting then reconnecting the black cable on your battery at the trunk of the car right? Or do i have to disconnect both black and red?
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      04-21-2015, 12:29 PM   #65
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Quote:
Originally Posted by bimmerillini95 View Post
Just to make sure, battery reset is by disconnecting then reconnecting the black cable on your battery at the trunk of the car right? Or do i have to disconnect both black and red?
just negative one & leave it for 15 to 20 min. & don't ever close trunk while battery is disconnected
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      04-21-2015, 09:40 PM   #66
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Quote:
Originally Posted by bimmerillini95 View Post
Where exactly can you get these mate, i tried home depot and autozone, couldn't find anything similar
Most auto parts stores should have them. I bought mine from O'Reilly's. Here's some from AutoZone

Nylon Rivets


Quote:
Originally Posted by rustyminded View Post
just negative one & leave it for 15 to 20 min. & don't ever close trunk while battery is disconnected
I never had to do this when adding an intake. Shouldn't be necessary. The only way I see this possibly being necessary is if the install was performed with the car on and even so shouldn't be required.

Nothing with adding an intake should cause poor mileage, even if if wasn't installed correctly.

However; if the MAF sensor was damaged this would send false reading possibly causing the motor to run rich.

I agree, first step of diagnoses would be returning to stock.
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