Comparing S62 Dinan ITB's vs OEM ITB's on a E39 M5
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- เผยแพร่เมื่อ 25 ส.ค. 2024
- Recently, I was working on my E39 M5, which required removing the top section of the intake plenum. With the top section off, the velocity stacks for the ITBs are fully exposed.....
I'm fortunate that my car has the relatively rare Dinan bored-out ITBs and hand-made velocity stacks. Additionally, I still have the OEM stacks and ITBs. It's uncommon to have both sets on hand since Dinan required the OEM set to be sent back for a core. Given the limited information available on the Dinan ITBs, I took a few minutes to make a quick video showing the differences between the OEM and Dinan ITBs. I did my best to highlight the differences without removing the Dinans from the car.
I hope you enjoy the video. Be sure to subscribe to the channel for more E39 and E28 M5 content.
~ Nick
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About AutoTechNick:
Growing up in rural Oregon, I was always around Hot Rods & Race Cars. I imagine my early exposure to this culture ignited a spark of interest in cars, which remains my passion.
🎓 I am a proud Alumni of Wyoming Technical Institute, where I studied Automotive Technology, Performance Engine Building & Street Rod Fabrication. In addition to “WyoTech,” I graduated from the BMW Service Technician Education Program, more commonly known as BMW S.T.E.P.
🏎️ I spent nearly ten years working in various BMW dealerships as a Master Technician. After a move back home to the PNW, I found myself no longer servicing German-made machines but now working with Italians. I spent nearly another ten years as a Ferrari Master Technician & Shop Foreman at a local Ferrari dealership.
🏆 Ferrari selected me as one of 12 technicians worldwide to compete in the “Ferrari Testa Rossa Awards” for four years consecutively. Finishing in 3rd place in 2016, & in 2019 I was able to place in 1st, winning the competition & earning the title of the “Top Ferrari Technician in the World!”
🚀 As my time with Ferrari came to an end, a new career path awaited me…. Aerospace. I am currently working at Blue Origin, helping to build & develop the BE-3PM and BE-3U rocket engines.
With my new career path, I needed an outlet for my automotive passion, thus the reason for this channel…
#s62 #e39m5 #e39
It is hard to beat the induction sound of ITB's. It really is a shame that so much of this sound is muffled by the factory plenum and air boxes..... And also props to BMW for fitting a four-door sedan with ITB's!!!!
~ Nick
I have a Dinan S1 and I've been searching for years for the Dinan ITB's and stacks! Congrats!
That sounds so good. Interesting comparison, thanks for the video!
You should have heard it in person!
Dinan used to also machine the shaft flat through the throttle on their other applications. Was this the case on your throttles as well? Great video, as always!
It was not. My shafts are still round on both sides.
~ Nick
I wonder how does the Dinan stacks vs the CF stacks.
It would be great if someone did some dyno comparisons for all of us to see!!
~ Nick