Wanting to know who has done a downpipe upgrade (2 1/4 - 2 1/2 i believe) on the greddy kit? Which kit? which car? do you have any numbers to back up the increase in power made by just upgrading the downpipe? i want to upgrade the downpipe but i want to make sure it is worth it. thanks, vernon

 

i have
b16a hach greddy kit at 6psi ran a 13.5 w/ 3 in exuast

 

Kteller.com does some really nice 2.5 inch upgrades for the greddy turbo...I plan on doing this because the upgrade is only like $200 and then you can open it up to full 3 inch after the DP...

BTW this is for the 15g kit....

Jon