One of the advantages of the Renesis is the very non-critical nature of the
exhaust system due to zero overlap. Just keep the backpressure down to
reasonable level and it's as good as it gets. The people with the
most experience were able to get only 4 HP increase going from stock car
manifold to best possible tuned headers (but keeping the rest of
system). Only 8 HP increase going to full race exhaust.
Of course you can look at this in two ways.
Tracy
How much effect does the siamesed port have on exhaust tuning?
Since a
significant % of the exhaust is getting mixed at the port, it
would seem
to kill the tuning.
Charlie
Tracy Crook
wrote:
> "Outside" two ports used 1.75" OD 321 SS pipes.
Center "siamesed"
> port has 1.5" OD pipe. All ports on Renesis
are rectangular so pipe
> was formed to fit the rectangular holes in
the home made flanges.
>
> Tracy (still waiting for food
flying weather)
>
>
Tracy,
>
>
What size pipe did you use for the Renesis exhaust ports?
Also,
> was is round, oval or
rectangular.?
>
>
>
Thanks,
>
>
Bobby Hughes
>
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