ok so i got a used Greddy turbo kit for my d15b. it came with everything including intercooler ect. now i have been reading and that "elbow" that greddy uses to connect to the downpipe just robs power....can i use a 5 bolt downpipe from like ebay on it? its a 15G turbo(small) what bolt pattern would i need?

actually i think its a 4 bolt

 

I think for the most part they are custommade, maybe you can find one.

 

^+1, Just call around, then take it in so they can make measurements. Thats what i'm doing for mine, also get it heatwrapped.

 

yeah ill get it heat wrapped...i think im just going leave the elbow and have them make me a 2.5" downpipe instead of the 2" it comes with.....i saw some guy on turbod16.com did that