The E90 (M3 Sedan), E92 (M3 Coupe), and E93 (M3 Convertible) are all known as the E9X platform. In this particular DIY, we use our 2012 E92 BMW M3 Coupe and install a aFe Stage 2 Intake kit on it. The intake install is pretty straight forward and with the aFe Stage 2 intake, it reuses your factory air box, so you don't need to remove that. You'll find a lot of people on the M3 forums saying that an intake is a waste of money. The reason they say that is because the factory closed air box system is actually very good. However, on this aFe Stage 2 intake, we were able to see gains of 8 whp. In addition to more power, the car has better sound and better throttle response.
Our install below is the aFe Power MagnumFORCE Stage-2 Pro DRY S Intake Systems; BMW M3 (E9X) 08-13 V8-4.0L part number 51-31662 (Pro Dry S air filter). Here's aFe's description on the intake: "This Stage 2 air intake system produces 12 max horsepower, 9 lbs. x ft. torque and out-flowed the factory intake by 41%. This unique intake system is designed to use the factory intake box to seal the intake tube and filter and tube against unwanted underhood temperatures while increasing air flow and velocity for optimum performance. This air intake system features a washable/reusable conical Pro Dry S air filter for maximum convenience and filter life, a dyno tuned intake tube and all the hardware necessary for an easy installation. This system is truly a silent killer."
For pricing or to purchase this intake, click here: aFe Power MagnumFORCE Stage 2 BMW M3 Intake with Pro Dry S air filter
and now... on to the install!
To get started, you need to get a Torx 20 screw driver and a flat head screw driver. These are the only tools you'll need.
When loosening your Torx 20 screws, we don't recommend completely removing them. Loose them enough so they are out of the base of the air box, but you don't need to completely take them out. This will prevent you from losing them.
Once you loosen all 8 Torx 20 bolts, you can lift up on the top of the air box and expose the air filter. You can see when we removed the lid, there were leaves in here and the air filter was a bit dirty.
When we removed the factory air filter, we saw there was a lot of sand and dirt in the air box, so we used our shop vac to clean it out. This would be a good time to ensure your air box is nice and clean before you put the new air filter in there.
Here you can see the factory air intake elbow vs the aFe Stage 2 intake elbow. The aFe elbow is much smoother and direct.
Here is a comparison of the really big factory air filter vs the smaller and better shaped aFe Stage 2 air filter.
Above you can see the aFe coupling installed on the factory inlet. We put the coupling on here first, but after playing with it a bit, it was easier to put the coupling on the intake elbow first, and then put both the elbow and coupling on the inlet at the same time.
This inlet above is easy to connect, just plug and play!
Here's a shot of the intake and elbow installed. Pretty easy and straight forward.
The install was easy and straight forward. This install was obviously for the aFe intake, but others such as the Macht Schnell and other popular intakes will be very similar. If you guys have any questions on this DIY/How-To, please leave your questions below!
Many of our customers are looking to buy coilovers or lowering springs for their car. Half of the manufacturers show their spring rates as kg/mm while others show them as lbs/in. It's easy to forget what the conversion is so we put together a quick and easy chart to use for reference.
Roughly 1 KG/mm is equal to 55.997 LBS/in. Easy way to remember is 1 KG/mm = 56 LBS/in.
Here's a few quick charts:
700 lb/in = 12.5 kg/mm
650 lb/in = 11.6 kg/mm
600 lb/in = 10.7 kg/mm
550 lb/in = 9.8 kg/mm
500 lb/in = 8.9 kg/mm
450 lb/in = 8 kg/mm
400 lb/in = 7.1 kg/mm
350 lb/in = 6.2 kg/mm
300 lb/in = 5.3 kg/mm
250 lb/in = 4.5 kg/mm
kg/mm to lbs/in
16 = 896
15 = 840
14 = 784
13 = 728
12 = 672
11 = 616
10 = 560
9.0 = 504
8.5 = 476
8.0 = 448
7.5 = 420
7.0 = 392
6.5 = 364
6.0 = 336
5.5 = 308
5.0 = 280
4.5 = 252
4.0 = 224
3.0 = 168
2.0 = 112
Hope you guys find this helpful! Let us know if you have any questions about these numbers.
The new BMW M4 has quickly become a favorite amongst both BMW enthusiasts and those new to BMW. The twin turbo inline 6 has proven to make some intense power even stock. Vorsteiner, a very popular BMW aftermarket manufacturer for BMW's, has released a new version of their GTRS4 widebody kit for the BMW M4. The special blue color, known as Yas Marina, is becoming popular on widebody kits such as these as well as those who vinyl wrap their cars.
Vorsteiner says this widebody is a 10th anniversary edition, so expect these widebody kits to be released in low quantities. This kit is about as aggressive as the Liberty Walk widebody kit.
Gabriel came to us looking to lower his Volvo S60 T6 AWD and decided on getting H&R Sport Lowering Springs to lower his car 1.2 inches front and 1.2 inches rear.
After installing the springs, Gabriel wrote this review: "I have a 2012 Volvo S60 T6 AWD. and these H&R springs are a huge improvement. Drop the car more then 1.2. They almost Look like coilovers that are not maxed out. The car rides stiffer. Feels better on the highway. But avoid brick roads. It will throw you around!"
He continues with his mods list: "Right now it's just straight piped, K&N high flow air filter, Michelin super sports 235 40 and H&R lowering springs. And because of the springs im running more negative camber all the way around."
Gabriel has offered his email address (firstname.lastname@example.org) to all other S60 owners who want to ask him questions about his car!
Nice S60, Gabriel!
If you are looking to really lower your Honda Civic or Acura Integra, BLOX has the answer for you. The all new BLOX Street Series HS Coilovers feature a shortened shock body which gives you an even lower starting point than most other coilovers on the market. With a twin tube shock design and good shock stroke, these ultra low coilovers still provide a firm yet comfortable ride. Top mounts are included as are steel lower mounts for durability. These coilovers allow for you to have an aggressive stance with various wheel fitment combinations.
These coilovers have a 10kg/mm front spring and a 6kg/mm rear spring rate.
Get more info and pricing here:
Our customer, Jeremy, came to us looking to lower his 2015 Honda Civic Si. He decided on the 2015 Civic Si D2 Racing Lowering Springs to lower his car 2.0" in the front and 2.0" in the rear. With their lifetime warranty, progressive spring rate, and great price, he was excited to get them on the car!
Above is the car after the springs have been installed. We think it's a perfect drop and makes the car look much better by cleaning up the stock wheel gap.
The car looks great Jeremy, glad you like it!
Wow! A customer of ours showed us this car today and we just had to share it. It's simply beautiful. We know it's a C7 Corvette Z06 with 375 width rear tires. The wheels are 20 inch in the front and 21 inch in the rear. It looks like it has some suspension work as it's a bit lowered, but it could also be the way the wheels fill up the fender, reducing the gap.
If anyone knows more information on the owner of this car, or it's modifications, please let us know!
Our customer Mike came to us looking to add coilovers to this 2006 Lexus IS350 to give him the stance he wanted. Mike and his father painted the car Porsche Mint Green at their shop in Louisiana called Auto Perfection Inc and wanted to give it the right look. Mike went with Megan Racing EZ Street Coilovers , one of the most popular choices for the IS350, to lower his car and maintain good ride quality. We think the car turned out great, and the stance looks awesome.
Full mods list:
Custom Catback Exhaust
Lexus F sport Intake Box
Megan Racing EZ Street Coilovers
Megan Racing Camber Arms
Delinte D7 225/40/18 235/40/18
Koenig Torch 18x9 Front and 18x10 Rear (painted white)
Molded Wald Spoiler
For more pictures of this IS350, check out Mike and Auto Perfection Inc (Louisiana) on Instagram.
There have been a lot of people complaining lately that after a few track laps their 2015 C7 Corvette Z06 feels slower. Initially people though that the supercharger was getting too hot, and so it was heatsoaking, effectively making the air going through the supercharger to the engine too hot and not making as much power.
GM has made a statement on this topic and has said that the problem is that the car is designed to pull back timing after some use, which helps to prevent any powertrain damage. They believe that the majority of owners will never race their C7 Z06, so they will never have this problem, or they simply won't notice. GM has said that there are aftermarket products you can purchase that will allow for you to override this feature in the ECU.
Some have said that the reason the ECU pulls back timing is because of the heat soak. The ECU sees the supercharger getting too hot, so it pulls back timing to prevent any engine damage. The real reason is still unknown, but those who are getting their C7 Z06 Corvettes dyno'd will soon test to see if the ECU pulls back timing when the supercharger air temps reach a certain temperature to cause heat soak.
If anyone has any data to prove either of the above, please contact us and we can share it here, so we can get down to the bottom of the power loss in the new Z06.
When our customer, Will, told us he was building a sleeper 2013 Subaru Forester XT Turbo, we were intrigued! Check out the modifications below that allowed for him to create 228 horsepower at all 4 wheels, and a very impressive 351 ft/lbs of torque! All of this through a stock exhaust, with minimal mods. The COBB AccessPort is a great tuning device, and we covered it in this other post previously.
Cobb Intake with box
(Stock exhaust) - Sleeper!
Whiteline 22mm swaybars and endlinks
Dyno tune by PIA in Tacoma, WA
I looked long and hard for a 2013 Forester XT Touring with low miles, finally I tracked one down 175 miles away. It was well worth the search amd the wait. Before I even had license plates I had to fix the body roll and release the power held back by restrictive parts and tuning. It's now making a peak of 351awtq and 228awhp running 16lbs of boost on a custom map from PIA in Tacoma, WA. I kept the exhaust stock for road trips, and so my wife wouldn't kill me. My 16 month old daughter loves the car and makes growling noises every time I start it up. Thanks to Redline360 and PIA for the amazing customer service and mods. It's truly an amazing sleeper, and handles perfectly for daily driving and the ocassional (okay, more than ocassional) hard corner. I would highly recommend both Redline 360 and PIA to anyone looking for their car to perform at its best!
What an awesome daily driver! What do you think? Let us and Will know in the comments below!