VELOCITY STACK 4 WINDOWS

The pre 10/2004 are where it's at.ģ) Get some filters, while rolling without might look cool sucking in small children and breaking your engine isn't. You can grab the STL and print/modify it yourself off my website here: Ģ) pull your stock trumpets out of an airbox - I bought a spare online for $40. There is a flat part of the clamp in the middle, that side you'll want to print facing down towards the build plate. You'll want to print it in ABS or PETG as it has better heat resistance, I used PETG. My clamp uses the pre 10/2004 style throttle body boots BMW part number 11612466477. Basically, unscrew the endcap off the trumpets and either cut or push them out. This is really the same as the PSDesign kit - they use factory ITBs too although they say otherwise.ġ) You can use my trumpet clamp design if you'd like, it's made for pre 10/2004 style trumpets. If anybody else wants to try, the shopping list is pretty simple.

VELOCITY STACK 4 WINDOWS

Windows up, my daughter filming - it's a bit definitely louder in real life, especially with the windows down. I have a stock exhaust so the car is basically stock quiet until over 3000rpms and than you Any sound clip / video would be awesome as well 😃Sure, I'll keep you posted. I really wonder how it'll do in the longer term - please continue to post as time goes on to show the progress? Perhaps this could be a beta for a kit that you could potentially provide for the community if enough people have interest.

Probably my best option is to use a CSL style airbox.so that's why BMW made that eh. I've thought about running hose into the exhaust using a venturi valve, or perhaps routing it through an oil separator/oil catch can and then into the IACV.but I'm not sure I want to route it directly into the IAVC - sounds like a great way to gump up the IACV. The stock system dumps back into the airbox so you don't smell anything, but running open velocity stacks there really isn't a good place pipe that back into the intake. I've designed a plate to go under them to help direct airflow into the trumpets, but I haven't put it on since I'm not sure if I want to keep this setup or not.īut it's the PCV system, running an open PCV sucks - just sticks.

The PCV can was my first beta print, I was going to reprint one in black or paint it black - I just had a bunch of white filament.įor tuning, I'm running MSS54HP non-h-bridge DME using a stock CSL tune with a CSL MAP & IAT sensors. Literally, the only thing that cost any money was the ITG filters ($22/each) Stock thumpets out of the stock airbox - same as the CSL turmpets.Īlso designed a PCV catch can to route brake booster and valve cover vent, it connects on the bottom to the stock oil return I designed a clamp in Fusion360 that holds two trumpets together (so you need three total) so all the factory trumpets can use all the stock mounting hardware. While I've been designing a CSL style airbox in my spare time I designed I'd try the Velocity stack / open ITB setup.

Velocity stack 4