javes wrote:
Now, question for the experts. Andy is explaining how to reach the 60 Hp range with wire splice and airbox mod. However, Tyga's way to get there starts with wire splice and new expansion chambers. Are these two ways compatible? What would be the outcome of both mods? Which one to select first?
The standard MC18 and MC21 pipes are good, although the cans are restrictive, but they are of course rather heavy. There is no reason why a well fiddled with MC18 or MC21 can't make mid 60's with standard pipes.
Race pipes not only weigh substantially less, but they also move peak power slightly higher up the rev-range. This can [a] make the bike slightly faster, and [b] potentially help make more power.
4x 20mm holes are better than 4x 25mm (1") holes, in our experience, and better on the front slope of the airbox than on the flat top, believe it or not. We've seen better results with a lid modified like that than with the whole back cut off, but others may tell you different. I can only say what we've witnessed on Steve's dyno.
No disrespect to TYGA (they are great personal friends of mine), but they are selling products! No company in their right mind is going to say "you could buy our product for £500, but do this for free and get similar results", are they?!
Not to say there aren't definite benefits to having a race exhaust system though, and you will need a set of chambers before too long for looks, ground clearance, weight saving, and further potential power increases.
It is generally trickier to get good results with stock pipes than with race pipes, but those results are often better with standard pipes than many race pipes! The standard pipes are an extremely good balance of performance and usability, and tend to give a good boost in the mid-range where the race pipes often lose power or at least drop off a little!
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Last edited by Andy on Mon Oct 18, 2010 4:25 pm; edited 1 time in total