Hollywoo0220
Customer Service oriented (most of the time) :-)
- First Name
- RJ
- Joined
- Feb 10, 2019
- Threads
- 5
- Messages
- 744
- Reaction score
- 524
- Location
- WA
- Vehicle(s)
- Dihatsu Charade, BMW, Various Hondas, Focus ST, and VW GTI
- Thread starter
- #16
You do understand (if you read the metrics) that the stock set-up is already tapered. You aren’t making the power to surpass the stock exhaust system w/o an upgraded turbo.It was PRL that said that indeed and is still the only one that says that.27Won says it is a restriction ,and others as wel.Most tuners i know around here also say it's a restriction.
Imo they never tested it properly, a full (larger) exhaust vs a stock exhaust would be a good test.Unbolting a stock exhaust after the front pipe isn't.
For me the best front pipe or downpipe would be tapered in size .For example starting at 3" at the turbo flange going true the cat into 2.75" then into the front pipe going from 2.75" to 2.5" .After that the exhaust can go from 2.5" to 2.36" and end up into a twin 2" or single 2.36" pipe. This keeps the exhaust pulses going and exhaust velocity up .Unbolting after the front pipe ,slows down the exhaust pulses into a very large area which could also mean hp loss.
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