Ok all us dsmers know when its time to upgrade(every day it seems for me) but i am at the point to where the mods i have don't satisfy me anymore. No i know i have alot more to do but as of now i have: FMIC w/ custom 2.5in Piping, Buschur racing T-28 turbo, complete 6bolt motor swap into my 95 tsi, turbo xs rfl blow off valve, turbo xs manual boost control, ACT 2600 clutch, and K&n filter. Now my boost only hits 14lbs in a second gear pull. However i have a tremendous amount of turbo lag... now i know that a big part of this is my stock exhaust but if i upgrade to like a N-1 cat back from apexi how much will this be decreased. I don't get full boost untill 4800 rpm and it sux cuz during shifts i loose lots of speed cuz my turbo won't spool...the reason i got the t-28 over a 16g or a 18g is because i thought that using a bored out t-25 would maintain that low inirtia and would spool alot faster than a 16g but its not the case with me. I am about 95 percent sure that its not a leak cuz i've had all my coulpers press check and the bov( i know many say the rfl leaks) it doesn't. Where do i go from hear... Exhaust... how much lag do i loose with exhaust?