[Terrance28]

Very very nice I am sold, I need as much help with IAT's being here in hot a$$ Texas.

[cincy335i]

Great work...thank you so much for the testing and your effort, you should voted e90 man of the month! lol

Thanks again, I believe I may be getting this Stett intake!

[mJ335]

Great research and comparison graphs! Thanks for sharing the data.. so.. I guess if anyone gets this CAI they don't need to get scoops because the intake itself will be getting air from the lower grill correct?

[scottp999]

Originally Posted by Former_Boosted_IS

One other thing, to say that the Bavarian Technic software is incredible is an understatement! If you own a BMW you simply must own this software!

Would love to see a detailed review of the BT scanner logging from you.

Great work!

[Former_Boosted_IS]

Originally Posted by cincy335i

Great work...thank you so much for the testing and your effort, you should voted e90 man of the month! lol

Thanks again, I believe I may be getting this Stett intake!

cincy, thanks for the words. I am just glad the work is over right now. My eyes are about to pop out of my head from working with Excel so many times!

mJ335, there is absolutely no reason whatsoever to get scoops if you choose the STETT Performance CAI.

Terrance, not only did the STETT Performance CAI lower perform well in warmer weather, but also much more humid conditions. Both are good things for you.

scott, I may do that soon. Bavarian Technic software is an absolutely incredibly powerful and useful tool. I think it is nothing less than a must.

[longodj]

EDIT: Nvm, just reread, caught the water discussion. Thanks for the review!

[skitlz]

Anyone have this intake with the AA bov by chance? Thats been my problem with switching from the AFE. Clearance issues. And im at work, and cant even see the pictures posted:P

[Proper Motion LLC]

I don't think the lci sedan has a removable grill cover. The grill and cover are merged as one..

[Former_Boosted_IS]

No problem and I am glad you guys enjoyed the review.

skitlz, I do have a STETT charge pipe / Tial BOV, so it does clear intakes. There is some play in here when you install the y-pipe, so I think you can adjust it to clear any BOV to be honest.

09AlpineTTSedan, it does look like one piece until you look closer. I would be very surprised if they are not the same.

[Bubbles]

67F ambient

Those are great temps.

Let's talk 90F ambient.

Regardless, nice work.

[Former_Boosted_IS]

Originally Posted by Bubbles

67F ambient

Those are great temps.

Let's talk 90F ambient.

Regardless, nice work.

Bubbles, the important part is that the CAI is producing a colder AIT. Remember we are not talking about the charge temperature, but the temperature after going through the turbo and intercooler. That is pretty significant. Whether it is 20F or 90F, the CAI will produce colder AITs.

[Bubbles]

Originally Posted by Former_Boosted_IS

Bubbles, the important part is that the CAI is producing a colder AIT. Remember we are not talking about the charge temperature, but the temperature after going through the turbo and intercooler. That is pretty significant. Whether it is 20F or 90F, the CAI will produce colder AITs.

I understand what you are saying. Cooler air is good, but when ambient track temps are very hot nearing 100F+, the improvement isn't as noticeable. Maybe I could recirculate my A/C ducts to my intake.

[Former_Boosted_IS]

Originally Posted by Bubbles

I understand what you are saying. Cooler air is good, but when ambient track temps are very hot nearing 100F+, the improvement isn't as noticeable. Maybe I could recirculate my A/C ducts to my intake.

Lol, but your engine compartment will warm a lot too.

[mJ335]

So whoever has the intake right now, how is the sound compared to the DCI? OP stated it's more "pronounced", but is it as loud as the DCIs?

[Former_Boosted_IS]

Originally Posted by mJ335

So whoever has the intake right now, how is the sound compared to the DCI? OP stated it's more "pronounced", but is it as loud as the DCIs?

Really it sounds very, very similar. If you are doing it to make more sound, then I think it would be the wrong choice. If you want lower IATs, then it has been proven to drop them in my testing an average of 9F (ambient 67).

[Vudoo4u2]

Originally Posted by Former_Boosted_IS

Bubbles, the important part is that the CAI is producing a colder AIT. Remember we are not talking about the charge temperature, but the temperature after going through the turbo and intercooler. That is pretty significant. Whether it is 20F or 90F, the CAI will produce colder AITs.

I greatly appreciate all the data you have compiled and the time you took to make it very easy to understand.

Just one slight issue with your statement I guess.

While in NA applications, AIT is extremely important and a very sensitive factor, in turbo applications, where AIT is important, but a few degrees (10F etc) are insignificant in comparison to volume of air being brought into the system. Turbos are far more in need of higher air volume, than a couple degrees cooler. That is why in virtually every turbo car, (not speaking of the N54) the primary focus of intakes is to increase air volume since then you are running higher boost, you need more air to keep it going without "huffing and puffing". So while I agree, it is nice to have slightly lower AIT with this based on your testing, I think the main question we should be addressing is, "Does a slight decrease in AIT offset lower air volume? Also, does this intake bring in less air in comparison to dual cone intakes with a far greater surface area?"

That I think would truly bring us to the conclusion of whether this placement of the intake is beneficial to the engine, or whether slightly lower AIT's come at the expense of less air volume?

[JoeyFiasco]

Originally Posted by Vudoo4u2

I greatly appreciate all the data you have compiled and the time you took to make it very easy to understand.

Just one slight issue with your statement I guess.

While in NA applications, AIT is extremely important and a very sensitive factor, in turbo applications, where AIT is important, but a few degrees (10F etc) are insignificant in comparison to volume of air being brought into the system. Turbos are far more in need of higher air volume, than a couple degrees cooler. That is why in virtually every turbo car, (not speaking of the N54) the primary focus of intakes is to increase air volume since then you are running higher boost, you need more air to keep it going without "huffing and puffing". So while I agree, it is nice to have slightly lower AIT with this based on your testing, I think the main question we should be addressing is, "Does a slight decrease in AIT offset lower air volume? Also, does this intake bring in less air in comparison to dual cone intakes with a far greater surface area?"

That I think would truly bring us to the conclusion of whether this placement of the intake is beneficial to the engine, or whether slightly lower AIT's come at the expense of less air volume?

in a round about way former boosted is already addressed this: Second, the JB3 would lower boost on the high end if the engine was not getting enough flow from the intakes. The boost was logged and identical between the WOT runs.

[Former_Boosted_IS]

Originally Posted by JoeyFiasco

in a round about way former boosted is already addressed this: Second, the JB3 would lower boost on the high end if the engine was not getting enough flow from the intakes. The boost was logged and identical between the WOT runs.

+1. The data we have is kind of back door data. I have driven this a lot at this point and I can tell you the boost simply has not dropped at all in the high rpms. If the JB3 does detect inadequate flow at the high rpms, then it will chop boost.

So, it would appear you are getting 9F colder AITs (should be much more siginificant on a stock FMIC) and still sufficient flow for these turbos.

[all8up]

First thank you for the detailed review.

I hate to ask you to do anything further, but by any chance do you have any logs of ign timing vs AIT with both intakes? Fairly certain if you had those numbers you could see if the ecu is pulling timing as AIT increases.

[Former_Boosted_IS]

Originally Posted by all8up

First thank you for the detailed review.

I hate to ask you to do anything further, but by any chance do you have any logs of ign timing vs AIT with both intakes? Fairly certain if you had those numbers you could see if the ecu is pulling timing as AIT increases.

I didn't log ignition timing but I may have some older logs with the DCIs on sequential runs. Are you curious in general or do you want to compare the logs between the two intakes?

[all8up]

I was hoping to compare timing logs between the two intakes. With my previous cars 5-10 degrees (increase)of AIT would not make the car retard timing but curious to see what happens with this car.

Also...how can you clean the filter? Do you have to take out the wheel liner, or do you bascially un-install the intake?
I had a CAI on several cars and I just became flat out too lazy to un-install the intake to clean the filter and when I finally did look....wow the filter was covered in soot.

[Former_Boosted_IS]

Originally Posted by all8up

I was hoping to compare timing logs between the two intakes. With my previous cars 5-10 degrees (increase)of AIT would not make the car retard timing but curious to see what happens with this car.

Also...how can you clean the filter? Do you have to take out the wheel liner, or do you bascially un-install the intake?
I had a CAI on several cars and I just became flat out too lazy to un-install the intake to clean the filter and when I finally did look....wow the filter was covered in soot.

I can look at a couple of runs where there are IAT rises of 10 degrees and see what the logs look like.

I think you do have to open the fender well to clean it. I cannot think of any other way off the top of my head.