Ok so I am looking at building a diffused down pipe as I currently have a bell-mouth. Now the bell-mouth I have is 76mm and I cant fit a 76mm diffused downpipe because of the size of the turbine housing exit.
So I want to go with a 63mm for the main and 38mm for the WG. The 38mm pipe will join the 76mm about 300mm away from the turbo.
Problem is how do I join the 63mm-76mm nicely with the least restriction as possible??
Any one done this mod before??
cant you buy a stainless 76-63mm reducer or mild steel
You can but they often not the greatest for air flow.
PFB please reply here, you have a 63 DP and a 76 exhaust.
The Only way you going to have enough space is if you go the same way I did 63 DP with a the 38mm joining the exhuast down stream.
I would like to go 76mm DP with the screamer but like you said there is no space.
Any idea if there will be an improvement by fitting a diffused DP vs the bell mouth now, a noticable difference??
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