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Bikes, Hints'n'Tips => Fazer 1000/FZ1 corner => Topic started by: Fazer Jim on 28 April 2015, 07:57:48 pm

Title: Anyone changed they're headers/downpipes for aftermarket ones?
Post by: Fazer Jim on 28 April 2015, 07:57:48 pm

II'm looking to change my original headers to a set of stainless ones from Sandy Bike Spares. Only £250. It means junking the Exup system entirely but I'm sure my bike Guru who skimmed the head and did a bit of porting will be able to do a bit of carb set up to help. Anyone used these headers or indeed any other headers? Decent results?

Title: Re: Anyone changed they're headers/downpipes for aftermarket ones?
Post by: Falcon 269 on 28 April 2015, 09:43:00 pm

Decent results?  Not on the dyno charts I've seen. :( 

No amount of tuning skill with carbs and intake tweaks will overcome a poorly designed header system. 

They're cheap for a reason - avoid.

Title: Re: Anyone changed they're headers/downpipes for aftermarket ones?
Post by: Fazer Jim on 29 April 2015, 06:19:12 pm

 :(  Pretty much my gut instinct aswell. The noise from my Exup valve (we all know the famous rattle) is driving me nuts. I might just have to invest in replacement parts. Hopefully I'll be able to disect it soon and fingers crossed some new bushes will do

Title: Re: Anyone changed they're headers/downpipes for aftermarket ones?
Post by: chaparral02 on 03 May 2015, 10:55:02 am

I wouldn't get rid of the Exup valve on a gen1 as you most likely loose a lot of bottom/mid range power..

Plus the Exup valve on the gen1 makes an aftermarket exhaust silencer sound nice & quiet at low rpm... ;)