Quote:
Originally Posted by krisr
Absolutely zero. Log manifolds on LS stuff will go 1000hp all day with pretty good EMAP. Just make sure you give priority to the wastegate and size it right - mine is on the passenger side crossover right on the corner of the bend and it handles the boost easily in a 3port configuration to the bottom port on the gate. I found with my turbo car with the stock manifold + log manifold, ceramic coating + wrapping the log manifold was the best for heat management and keeping the sparks inside the wires  |
X2 I run log manifolds with a 2 1/4 hotside and it works fine. For the street manifolds are fine plus they don't leak. The largest restriction to flow is in the turbine housing. You can put a large of a pipe as you want in front of a restriction, and it doesn't help anything.