Facts and figures for the CPR6
Bolt on an 11% power increase
The V6 Alloytec CPR6 Inlet Manifold produced by Performance Manifolds puts on an 11% horsepower power increase on a standard engine and standard exhaust system and up to 60% power increase on a highly modified cylinder head, cam & exhaust system combination.
That's 444hp, up from 261hp = 183hp of bolt-on power parts screwed onto a standard V6 alloytec small block ... if you're still not impressed, that's at 8750rpm.
FIGURE 1: The flow chart from Chestertons showing the standard flow (bottom), the theoretical maximum potential flow (top) and the flow achieved by Performance Manifolds.
FIGURE 2: By adding the CPR6 manifold alone you can add 20hp to a standard V6 Commodore alloytec (6000rpm) at the tyre, and 25hp to an SV6 (6500rpm) at the tyre. Two hours and four spanners - bolt on and enjoy!
FIGURE 3: The blue lines in this graph shows a heavily modified engine (but still with all standard engine internals except for the camshafts) versus a stock standard V6 alloytec (redlines).
FIGURE 4: The red lines in this graph shows a heavily modified engine (but still with all standard engine internals except for the camshafts). The blue lines are the same engine, but with the addition of the CPR6 manifold. As you can see, even with a fully tuned engines, you are still 45hp off the pace unless you've got the CPR6.