XVZ 96 Royal Star Exhaust

[winston66]

Winston 66,

I have read that a four into four is possibly the worst type of exhaust system to have as it is a power robber etc.

Now this is what I have on my 96 Royal Star and when towing the gas used seems to be very high , on my last trip I averaged only about 25 to 28 Mpg US this was computed by dead reckoning,

It is a little difficult to be precise as I have to adjust all the figures from liters , kilometers ,to miles, and USA. gallons.

But for the metric minded how about an estimated 9.5 Klm. per liter, or otherwise about 10.5 liters per 100 Kilometers.That should be close enough for this example.

Now my question is this, what if anything can I do with he present 4 into 4 exhaust system that i have and does anyone have some insight as to any possible improvements could be expected by changing some stuff.

Lets hear your views and opinions.

Cheers , Winston 66, Western Australia