3.3T Intake comparisons

[Riouxgrande]

I would stay away from the Agency Power Kit. Unless AP has redone the kit in the last few months it’s going to be nothing but problems. Specifically the filters not seating on the inlet pipes correctly and having a tendency to pop off of the piping. When I noted all of the issues I was having with the AP Kit the response I got was basically, “We never test fitted this to a G70 so we can’t guarantee it’ll work with your car.” Of course after I bought and installed mine I then started finding all sorts of complaints from the Stinger side about similar issues I was having.

I ended up going with the Injen kit but had to order new filters as the filters supplied in the kit were too long and had clearance issues that I wasn’t comfortable with. Injen basically said the same as AP, that the kit was never test fitted on a G70 so they couldn’t recommend using their kit.

The BMS Kit wasn’t what I was looking for, visually, so I didn’t check it out. But from what I’ve seen on these boards most G70 owners really like the BMS Kit.

I thought I had read something somewhere on here about the filters popping off lol...guess it was you?

I LOVE the red intake pipes on the injen. What filters did you swap to? Would the included filters work if you really wanted them to? How much did you pay and did that include both air intakes?

 

[hi_im_pancake]

I thought I had read something somewhere on here about the filters popping off lol...guess it was you?

I LOVE the red intake pipes on the injen. What filters did you swap to? Would the included filters work if you really wanted them to? How much did you pay and did that include both air intakes?

My AP experiences are a few pages back in this thread. My Injen post is here 3.3T - Injen Intake Kit - No Quite a Perfect Fit

That should have the issues I saw with both the original Injen filters and the ones I ended up ordering to fit.

 

[Vortex951]

So what do you think those sounds are? Some sort of surge or flutter? That’s kinda freaky for just an aftermarket intake mod. I know you guys run the JB4 too, maybe that’s the root cause?

I think it does have something to do with the aftermarket intakes and leaving the exhaust stock. More air in but doesn’t have any room to get air out quicker. I had the problems with roughly 30-80 percent throttle. I don’t think it has actually happened since I got all my exhaust on tho. My buddy with a stinger had the same problem and he has the Injen intakes and that is his only mod. No exhaust. No tune. My opinion is if you increase the airflow in. You gotta increase it’s route out.

 

[Vortex951]

From what I read about the AP intakes is the filter was installed to far onto the intake tube and when the engine rocks under heavy throttle it pops the tube off.

 

[Shadymouse]

I have the BMS intake and I had to heat the rubber on the rims of the filters to work. They would not go on at all and they sent me the slightly smaller cylinder shaped blue filters as oppose to the coned shaped ones.

Now that I think about it... maybe that's why they didn't fit without heat

 

[hi_im_pancake]

From what I read about the AP intakes is the filter was installed to far onto the intake tube and when the engine rocks under heavy throttle it pops the tube off.

It’s a design flaw, two part actually. The inlet tubes are completely smooth, injection molded plastic, with no lip or ridge or any type of friction points for the filters to grab. The other issue is that the inlet tubes are a little short where they pass through the air box so you end up having to push the filter base through the air box with the clamp on the outside. So now you have an issue where any movement of the piping catches the clamp which moves the filter. Add that to the fact that the filters are having a hard time gripping the piping already and you get filters popping off.

 

[tumtum]

I think it does have something to do with the aftermarket intakes and leaving the exhaust stock. More air in but doesn’t have any room to get air out quicker. I had the problems with roughly 30-80 percent throttle. I don’t think it has actually happened since I got all my exhaust on tho. My buddy with a stinger had the same problem and he has the Injen intakes and that is his only mod. No exhaust. No tune. My opinion is if you increase the airflow in. You gotta increase it’s route out.

Makes sense as long as it makes optimal power then I am fine with the sound for now, but I am going to put an exhaust on it down the road.

 

[tumtum]

I tried doing something similar... But at a lower speed. I'm not hearing the sound stutter at all - this is at about 1/3 throttle.

Take a look/listen...

Let me know if I'm doing it wrong - or maybe I just have selective hearing!

No I did not hear it, but maybe it is because you have more mods on your car too. The point vortex brought up seems like a plausible idea with too much air coming in, but not enough air coming out at the same time.

 

[Riouxgrande]

It’s a design flaw, two part actually. The inlet tubes are completely smooth, injection molded plastic, with no lip or ridge or any type of friction points for the filters to grab. The other issue is that the inlet tubes are a little short where they pass through the air box so you end up having to push the filter base through the air box with the clamp on the outside. So now you have an issue where any movement of the piping catches the clamp which moves the filter. Add that to the fact that the filters are having a hard time gripping the piping already and you get filters popping off.

So I think I've narrowed down to AP or Injen. I actually spoke with Tyler at Vivid Racing on the phone regarding my concerns about fitment issues with the AP system and he basically chalked it up to improper installation, but did comment that he wish they would change the design for a more secure fit. He said that you need to make sure not to install the filter too far onto the tube and I asked him if there was enough surface area to do so and still have a secure fit and he ensured there is. While obviously he is trying to make a sale, he did help provide a sense of confidence that it can be a good, problem free system. Also offered 10% off and free shipping so that would make it cheaper than the Injen from most websites.

Now on to the Injen intake...got a little discount offer from the K8 Stinger store and I already know I love the look of it. But...no heatshields, and apparently too big of filters for our cars, is making it a tough decision between the two.

Now that most of you have had your intakes for a while, what would your vote be between the two? Am I a fool for not really considering the AEM? I am ready to pull the trigger so I want some final input from the boys!

 

[Slip_Angle]

Stock with front elbow delete. Free, little to no heat soak and probably similar power to the CAIs..

..but I understand wanting something different, better looking and with more sound!

______________________________

Help support this site so it can continue supporting you!

 

[Riouxgrande]

Stock with front elbow delete. Free, little to no heat soak and probably similar power to the CAIs..

..but I understand wanting something different, better looking and with more sound!

I wonder how much better the injen would perform with the elbow delete since the filters are facing right up front behind them it seems. But I doubt I'll tackle taking the bumper off.

 

[hi_im_pancake]

So I think I've narrowed down to AP or Injen. I actually spoke with Tyler at Vivid Racing on the phone regarding my concerns about fitment issues with the AP system and he basically chalked it up to improper installation, but did comment that he wish they would change the design for a more secure fit. He said that you need to make sure not to install the filter too far onto the tube and I asked him if there was enough surface area to do so and still have a secure fit and he ensured there is. While obviously he is trying to make a sale, he did help provide a sense of confidence that it can be a good, problem free system. Also offered 10% off and free shipping so that would make it cheaper than the Injen from most websites.

Now on to the Injen intake...got a little discount offer from the K8 Stinger store and I already know I love the look of it. But...no heatshields, and apparently too big of filters for our cars, is making it a tough decision between the two.

Now that most of you have had your intakes for a while, what would your vote be between the two? Am I a fool for not really considering the AEM? I am ready to pull the trigger so I want some final input from the boys!

My issue with “chalking it up to improper installation” is that way too many people have had the exact same issue. That many people can’t be doing it wrong unless there’s an issue. If even 10% of all AP intake kits sold for the Stinger or G70 are having the exact same issue... it’s a design flaw and needs to be addressed.

AP told me the same thing, “Are you sure you’re installing it correctly?” Three different people removing and re-installing four different times means there’s a product issue. FYI, an aftermarket auto parts sales expert, a commercial parts expert, and a lift technician who builds and drifts cars competitively should be able to install a bolt-on intake. It was nothing but issues.

Also, Injen won’t vouch for their intake fitting a G70 because they’ve never test fit one [as of a few months ago] and when told their supplied filters had fitment/clearance issues they to “immediately uninstall and return the kit.” All it took was a shorter air filter, I used Spectre P/N 9131 and the kit is perfectly fine.

 

[hi_im_pancake]

I wonder how much better the injen would perform with the elbow delete since the filters are facing right up front behind them it seems. But I doubt I'll tackle taking the bumper off.

You have to remove the inside pipe of the bumper inlet to use the Injen intake. It’s really simple, two bolts per pipe.

FYI, the filters in the pic are the Spectre 9131. I’d recommend ordering their pre-filter P/N 8131 as well.

 

[Riouxgrande]

You have to remove the inside pipe of the bumper inlet to use the Injen intake. It’s really simple, two bolts per pipe.

FYI, the filters in the pic are the Spectre 9131. I’d recommend ordering their pre-filter P/N 8131 as well.

Ok so I would say it's clear your vote is the injen lol. If I recall, you could have kept the injen filters in, they were just rubbing or had too much contact points?

 

[hi_im_pancake]

Ok so I would say it's clear your vote is the injen lol. If I recall, you could have kept the injen filters in, they were just rubbing or had too much contact points?

Correct, I didn’t feel comfortable with the contact points of the Injen filters. Too many hard points with edges for the filters to rub against.

You can see in these pics how much larger the Injen supplied filters are than the Spectres I went with. I would see if Injen will sell you the kit less the filters, then order a pair each of the Spectre 9131 & 8131from Amazon.

 

[CoconutRob]

Correct, I didn’t feel comfortable with the contact points of the Injen filters. Too many hard points with edges for the filters to rub against.

You can see in these pics how much larger the Injen supplied filters are than the Spectres I went with. I would see if Injen will sell you the kit less the filters, then order a pair each of the Spectre 9131 & 8131from Amazon.

It must be a nice intake. I just cant comprehend purchasing a intake with filters, then replacing the filters. $500 at that.

 

[Riouxgrande]

Anyone near Pomona, CA? I emailed Injen about purchasing without filters and they asked if I was local to Pomona for test fitting due to the concerns about the filters being too big. I explained I was looking to buy the stinger kit for the g70 so hes aware of what I'm trying to do. Curious if anyone is close enough/willing to work that out with them.

 

[hi_im_pancake]

It must be a nice intake. I just cant comprehend purchasing a intake with filters, then replacing the filters. $500 at that.

Because by that point I was already over $1000 into it for two kits that didn’t fit. I couldn’t find any specs on other Injen filters and Injen didn’t seem inclined to indulge me. So it was another $40 for the two Spectre filters that I was mostly certain would fit based off of “precision” measurements done by myself. I ran the supplied Injen filters for a few days and ended up having one pre-filter get ripped in that time. The Spectre filters had enough clearance all the way around that I feel comfortable with them on the Injen pipes.

 

[CoconutRob]

Because by that point I was already over $1000 into it for two kits that didn’t fit. I couldn’t find any specs on other Injen filters and Injen didn’t seem inclined to indulge me. So it was another $40 for the two Spectre filters that I was mostly certain would fit based off of “precision” measurements done by myself. I ran the supplied Injen filters for a few days and ended up having one pre-filter get ripped in that time. The Spectre filters had enough clearance all the way around that I feel comfortable with them on the Injen pipes.

Not criticizing, OMG Spectre filters DIY for $90 . And all of this is why I still cant decide on an intake myself.

 

[hi_im_pancake]

Not criticizing, OMG Spectre filters DIY for $90 . And all of this is why I still cant decide on an intake myself.

Oh I know, it’s just something I’ve explained more than a few times already to other people. lol

I looked through all of the DIY posts and looked at other kits as well. Injen was my second choice to AP mostly due to form over function. My basic premise was, “Either get one near completely sealed and using the factory snorkels like the AP Kit? Or say f$%k it and go with the completely open design of the Injen kit. No in between for me.