2inch dP. 2 inch charge pipe to DSM SMIC to 2.5 cold air. 4 check valves. blitz SS BOV. t25 turbo. it doesnt seem to spool until like 4500-5000.

 

get bigger charge pipes and a bigger downpipe. IMO 2 1/2 but 2 1/4 should be fine!

 

just get a bigger downpipe.

2 1/2 3"

charge pipes are fine.

 

If your running a factory cat. that could be a bit restrictive also, so maybe try a test pipe or a high flow cat.

 

get rid of the filter for a test run and see how it does.

 

sorry to be the only to break it to u, try taking off the downpipe and turbo filter.. the piping is fine.. you could have low compression in ur cylinders... lets home not, test them out... pm me if u want to know how to do a homemade test
mike

 

What kind of boost are you running?