This is a discussion on help whats better AEM INTAKE OR STOCK AIR FILTER? within the Engine Modifications forums, part of the Tech & Modifying & General Repairs category; Originally Posted by Zman13 Well not really sure if they are or not cause i wasnt there when they did ...
There's nothing to risk in the engine if you properly scale the MAF to account for the changes in airflow. Even the OE airbox can use some MAF scaling. Water ingestion is prevented by common sense. If you go into a puddle deep enough to submerge your intake filter, you deserve it.Originally Posted by Zman13
Like I said before, the stock intake is a decent restriction at StageII level on a VFXX car. Here's an example:
2011 Subaru STI stage 2 plus intake. Before/After intake test. - NASIOC
StageII STI. 19whp peak gains. 25+whp at redline.I would advise my customers against it. There are sections you have to scale the MAF by ~10% on newer WRXs.Originally Posted by 11blackSTiFew people are inclined enough to install a WBO2 sensor on a stock car, so you won't get proper AFR readings.Originally Posted by Zman13
Last edited by EJ257; 01-15-2013 at 10:51 AM.
I'm not as familiar with the domestic cars, but where is the MAF sensor located, if they use MAF-based fueling? In the intake (like with ours) or further downstream?Originally Posted by Zman13Perfectly reasonable. You're not willing to modify your car and break your end of the warranty contract.Originally Posted by Zman13What's the point of removing the tune if the modifications remain on the car? The only reason you'd remove the map is if your intent is to try to fool them into thinking you haven't modified the car, yet you leave the shiny downpipe and bright red intake pipe on?Originally Posted by Zman13Your priorities are different. For someone looking for reliability, leaving the car in stock form is ideal (although, I'd argue that the OL/CL fueling delay is a risk), because if something goes wrong, you have your warranty to fall back on. For someone looking for performance, the stock intake is not ideal when you start getting into even the most basic power modifications (StageII). The base maps like Cobb that support the AEM/Cobb intakes are mainly just MAF scaling to keep fueling on point, rather than utilizing them for more power (from what I can tell, having no access to ATR), which would lead to a bit of misinformation when people see gains are as minimal as shown by Cobb.Originally Posted by Zman13I don't have MAF scalings for the Perrin intakes of '02-'07. I know that Jeremys (testes1010) experience with them was that they were one of the worst offenders, however.Originally Posted by SD_GR
Last edited by EJ257; 01-15-2013 at 11:19 AM.
^Ok first yes most of the American Muscle cars ive owned have the MAF in the intake tube between the filter and the throttle body. The part when i was discussing Removing the tune from a car is what it seems like the majority of people are doing before they take them into the dealer so it looks like the car was never Modded and retain there warranty(not what im doing)..If there is fueling delay in stock form of these cars from the factory and they run slightly lean then sure they could benefit from a good tune i dont know enough about these cars to concur tho! Also if the stock intake is good for 400 hp i would think that would be good enough for most MOD's now of course if you plan on building these cars into super cars with over 400 hp ya you will need a better intake!
If the MAF is post intake, it shouldn't have the effect it does in our cars.Originally Posted by Zman13
A custom StageII tune puts you close to the 400bhp point. At which point an intake is worth it to throw on while they're tuning the car anyway. I'd expect ~10-15whp peak on a newer car vs the OE airbox.
Last edited by EJ257; 01-15-2013 at 02:09 PM.
When I put the AEM sticker on my car, it gained 50whp right there... the sticker came with my intake so WHO knows how much more I have with the intake too... so much gains...
2012 WRX Hatchback ISM - Base Model - STI STS, SPT Boost Gauge, AEM Intake, TP Stage 1 Tune, red illumination kit, cobb shift knob, 20% tint - currently on stock wheels wrapped in Pirelli Winter Carving Edge Tires
Some cool tidbits to come...
But it's simply not true, intakes gain hp even on the mighty 5.0.....
Your not "hurting" your engine running an aftermarket filter.
I had an el cheapo eBay cai on my rsx type-s for 165k miles. It was still on the car when I sold it. With perfect compression and it ran fine, just as hard as the day I rolled it off the showroom floor with 12 miles on it. So I don't care what anyone says, your car will wear out faster from your heavy right foot before a less restrictive intake will affect it.
Ppl that modify cars generally drive them harder than people who don't. Some people might misconstrue that as the mods causing the problems. But it's the driver 99% of the time
Last edited by EndlessSea; 01-18-2013 at 12:41 PM.