Quote:
Originally Posted by beta
It's a shame you did not put the headers on first. Roughly 1/2 to 2/3rds of your HP gains are from headers alone, so I'm guessing we can expect 10-15hp from the system you tested; with a tune adding a few more ponies.
If someone from the group buy can do dynos before/after with headers it would be appreciated  |
Completely agree. In order to really see the effect of the exhaust, you'll need to dyno the car with headers and STOCK exhaust to compare.