Sorry for bringing up an old thread, but I've decided to put the hughes whiplash cam lifters, Rpm intake. Keep the 906 heads. MSD 6al I would like to keep the stock exhaust logs since I dont care for headers.
If I dont change to headers, will it make a huge difference?
The dyno's I have found dont test with headers, so I have no idea how much HP would be lost with the logs.
