The world's first sim-rig exhaust
Backfire Exhaust Tip
The tailpipe your rig never had, and the first anywhere with backfires that answer your right foot. Lift off at high revs and it cracks and pops like a rally car on anti-lag, then glows down as the revs fall.
Designed, built and tuned by Adam Smadja. Four of them run on his rig today.
Exclusive to SimDriven. Made to order.
01 On the rig
The world's first sim-rig diffuser
Four tips. Every lift-off.
Set into the rear diffuser in pairs, each tip fires on its own, so the pops roll across the back of the rig instead of flashing as one. The brake light between them reacts to every stop.
02 Evolution
Ten days, seven versions.
From a round tip that missed the mark to the octagon on the rig today. Every version was drawn, made and fitted on the rig, and the ones that broke taught the next.
The first idea: a compact rally exhaust
A compact rally-style exhaust box for the back of the rig. Big, busy, and not the one.
“I am thinking to explore a whole other direction”
- 3 Aug The first idea: a compact rally exhaust superseded
- 31 Aug Round tip, first fit superseded
- 31 Aug Aston-style round tip (rejected) failed
- 5 Sept Ten shape concepts concept
- 5 Sept N1 Octave, first body superseded
- 5 Sept N1 Octave v2, full length superseded
- 5 Sept V3: first test (failed) failed
- 6 Sept V4: redesigned failed
- 6 Sept V4: fit samples worked
- 6 Sept V4-A: fits, too fussy (failed) failed
- 7 Sept V5: Version 1 final worked
- 8 Sept V2: on the rig, in pairs worked
03 In the studio
Made to be looked at.
Eight faces, a sloped mouth and a field of vents that throw the light from inside. It reads as a real tailpipe from every angle, lit or dark.

Exclusive to SimDriven · made to order
Want a set for your rig?
Every set is made for the rig it goes on. Enquiries open with the launch of the site.