Intake Shootout! Injen vs AFE vs AVO vs AiRaid vs STOCK!

[2forme]

@Drift-Office,

I meant absolutely no disrespect. I applaud the effort. I'm just saying that these dynos *COULD* make the Injen and AIRAID look like they make more power than they really would in day-to-day use.

With the hood open, every intake will always get fresh, cool air. However, driving around town with the hood closed, this wouldn't be the case for the AIRAID or the Injen because of how they are designed. They would suck in higher temps because of the heat soak in the engine bay. This doesn't apply as much to the stock (with snorkel) and the aFe, because they suck air directly from the front bumper area with very little to no gap between.

Also, by the time the engine is fully warm (which is the only time you should beat on your car), the engine bay is already good and toasty.

[2forme]

Originally Posted by Crossover Auto

If someone has a good scan tool to gather this info before I do. Please post your results.
The following info needs to be collected for a more detailed intake shoot out.

MAF g/s airflow vs. load/rpm - how much air does each intake flow
Wideband AFR vs. load - how each affects the stock ECU tune
Short term and long term fuel trims changes - how the stock ECU tune is compensating for air flow changes
IAT(intake air temp) from idle to moving @ 40/70mph - how each reacts to air temperature which affects the ECU tune

I posted a lot of this information (minus the fuel trim stuff) in my roto mold shootout thread.

http://www.ft86club.com/forums/showthread.php?t=18598

I will say, that the stock tune did an amazing job at adjusting for the aFe since it held an identical AFR curve to the stock intake.

I'm going to do IAT readings between the aFe and the AIRAID as soon as we get a dry day around here. LOL. I have them in different logs taken on different days, but I want to compare them on the same day for the same temp.

[Crossover Auto]

Originally Posted by Drift-Office

Don't you mean susceptible?

semantics

Originally Posted by Drift-Office

That's great, but I leave that to the intake manufacturers ~ after all, they're judged by the end result - and based on their collective performance at the end of the dyno run...

While the end result is why most will purchase an intake. A more informed consumer or dealer should like to know these details, knowing the intake has good driveability, won't throw DTCs left and right, and wont adversely affect AFR which in turn alters MPG.

[Drift-Office]

Originally Posted by Crossover Auto

semantics

While the end result is why most will purchase an intake. A more informed consumer or dealer should like to know these details, knowing the intake has good driveability, won't throw DTCs left and right, and wont adversely affect AFR which in turn alters MPG.

QFT!

[xcelir8brz]

Very interesting.

[jumbaco]

+1, interesting results. The Injen puts the MAF so close to the TB, I though it had to be a certain distance away from it.

[zoomzoomers]

I'm really surprised about the results of this comparo. Of course, all I have to go on are these are the data posted. Good work guys and thanks.

[MarkRacerX]

Great Test!!!

Thanks for all your work on this and to post the outcome of what you found!!

Greatly Appreciated

[whitejdm]

Great information in here but as with all intake threads it seems to raise just as many questions as answers. SO far I'm still sticking with the dropin filter/intake pipe combo.

[Style]

I just really want to see the Airaid retested. No gains from it compared to stock? Something is wrong right?? Or am I reading the results wrong?

[2forme]

Originally Posted by Style

I just really want to see the Airaid retested. No gains from it compared to stock? Something is wrong right?? Or am I reading the results wrong?

They tested it on 2 different cars. I've seen it make virtually nothing personally. Visconti has seen it make nothing. I think that dyno is pretty legit.

Intakes don't make much power on these cars. Especially with an aftermarket tune.

[Style]

Originally Posted by 2forme

They tested it on 2 different cars. I've seen it make virtually nothing personally. Visconti has seen it make nothing. I think that dyno is pretty legit.

Intakes don't make much power on these cars. Especially with an aftermarket tune.

So why is it that the Injen intake has the craziest gains out of all the ones that they tested on this test?

[2forme]

Originally Posted by Style

So why is it that the Injen intake has the craziest gains out of all the ones that they tested on this test?

My belief is because they didn't run the dyno with a closed hood. The Injen isn't a CAI. But with the hood open and a fan blowing on it, it is. Oh, and because Injen bypasses some of the air past the MAFS, tricking it into running lean. This would be negated with an aftermarket tune.

[NotSoJDM]

Originally Posted by 2forme

My belief is because they didn't run the dyno with a closed hood. The Injen isn't a CAI. But with the hood open and a fan blowing on it, it is. Oh, and because Injen bypasses some of the air past the MAFS, tricking it into running lean. This would be negated with an aftermarket tune.

I think MAF placement has everything to do with it and the tube they use in the intake pipe near the MAF for injen. You can see why the AIRAID chokes itself out in the high rpms because the AFRs dive into the 10s and under. That is straight robbing power.