SUPERFLARE VELOCITY STACKS
New “8670” Big Radius 50mm stacks
“8670” flare 50mm length Suzuki stack.
It’s pretty much well known that intake tract pressure waves would prefer no inlet radius at all – but air flow wants a large smooth inlet radius.
It ‘s fairly well known that a large inlet radius flows air more easily, but destroys the intake tract pressure waves – ruining the “natural supercharging” effect of a well tuned intake tract.
These new, larger OD and more gentle radius stacks flow more steady state air at high rpm and retain as much of the pressure waves as possible.
It’s always a battle to produce a stack length and shape that does what everybody wants. Our standard 1000 stacks are designed to boost the low, mid and upper mid range hp, without hurting the power at redline (redline, not the rev limiter).
We only use fully loaded dyno tests to design products.
If the dyno testing load is insufficient (as in an inertia 4th gear sweep), power past the power peak on the dyno is hurt – as in a dealership level dyno test. Leading to engines that are optimized for a low load dyno, including “too short” stacks and “too retarded” intake timing – and giving up low and midrange on the track.
These stacks should make more peak power than our standard stacks.