V3 Equal Length & Long Tube Headers
by InfinityDesign
Build Journal: Special Series
The zenith of naturally aspirated M engines were still restricted.
The S85 and the S65 were the pinnacles of naturally aspirated engine development by BMW M.
Their engineers managed to create equal length headers for the S85 and S65 giving them their signature sound.
However, the older V10 design had its primary cats are built into the headers, right after the merge collectors.
The design immediately impacts exhaust flow - inhibiting potential performance from our V10s.
Enjoy,
- Matt / @m3_epoustouflant
Long Tube Design
The design retains an even 42mm diameter across the runners, while achieving the required length through unique curvatures for max performance.
Equal Length Runners
The equal length design retained the signature S85 exhaust note, while being the best performing header solution on the market.
Fits with OE sensors
Bungs for pre-cat, post-cat and temperature sensors were cut, fitted and welded to the headers.
TIG welded 304 stainless steel
They are TIG welded and made from 304 Stainless Steel. Each runner is individually tagged and aligned to slip into the merge collector.
F1 style collectors
The catless primary runner design is flow optimized, connecting to an F1 style collector.
Spec your headers
stage 3 tuning by Sal @ InfinityDesign
Gains of up to +/- 70whp with tuning.
Salman developed a Stage tuning map to tap into the optimal performance potential of the V10 M5 fitted with V3 headers. He also eliminates the Check Engine Light (CEL) from your dashboard.
Red is stock.
Green is headers without tune.
Blue is headers with stage 3 tuning.
technical journal entry
There's a method to the madness.
This journal entry was done in collaboration with the guys at InnovAuto who did the installation.
You'll find tips, tricks, notes and the required hardware.
Sal @ InfinityDesign
Legacy knowledge.
InfinityDesign's unique product design and engineering is crafted by the grand-daddy of the most popular S85 products and tuners to hundreds of S85s.
Salman.
As a former Evolve co-owner, he took part in engineering the headers & e-tronic exhaust system, cat deletes, carbon intakes, v8 supercharger kits and tuning maps during the 2000s and early 2010s.
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