Well, honestly, as far as I know, Joel does not make exhausts for FZ, you can talk to Automech, their exhaust also work real nice, but IMO dont look that nice.

You will not get good and reliable free flow exhaust blow 7K. After market products are always performance oriented and look wise decent, thus it is not cheaper.

Can you get me some pics on the ffe that these Automech guys produce??

dont expect the tuned exhaust to be very loud. and vice versa!!! i mean you can either have a loud free flow exhaust or have a tuned exhaust. but not both..

and a tuned exhaust is not cheap at all cos its a lot of trial and error involved..

A lil bit of explanation would help ... unless by Tuned you meant tuning as in tuning a guitar!

yup....i agree with that....a lil more of of explanation would help

you can check out this link.. may be it would help..

FZ gets a boost

buddy i contacted one of the given numbers a long time ago itself....he told that the ffe was ROAD LEGAL

i just want to know if anyone has any experience of owning it..!!

Even a FFE can be road legal, my free flow conforms to emission standards but is kind of loud, so if I make a baffle to reduce the sound, my free flow will also be road legal.
Here is a video of a bike with the exhaust - YouTube - Automech Racing Exhausts
The exhaust will look the same but you can get it in some other color if you wish.
They look dirty but work fairly nice.

For the explanation part, if you think about making a exhaust which sounds great, you will have to compromise on the performance aspects, and if you look to make a exhaust have the most performance benefits then it might just sound crazily loud.
There are very few exhaust which are loud and give a proper gain in performance.
You should think about it, what do you want more? Sound or Performance.

I really doubt if anybody here on this forum even has a clue of how to build a good exhaust system. I m willing to challenge any exhaust system sold in this country by any reputed maker/manufacturer/privateer on a dyno or v-box. A pipe with some sound and a freed up muffler is not an exhaust system.
well lets leave it. We can talk about tech when members here have matured for over a decade.
@abhay - Pls plonk an aftermarket/automech etc pipe and tell me your performance ratings. Would be interesting.

Joel, I never said that they make better exhaust than yours, but yes, with their exhaust you do get some gain in performance, more than all the cheap ones I have seen.
Also the main reason why I suggest automech is that you dont make any exhausts for the FZ

Joel bhai.....if you are having any ideas of making an FFE for FZ please do post it here i would be really happy to get one FFE done by your own hand

I am praying the almighty that you decide to make one

a tuned exhaust is very much like the tuning of a guitar.. not in literal sense but just get along now..
to much restriction, the exhaust chokes the intake. and too little restriction and the exhaust valves get burnt.. however, the exhaust valve burning is only for air cooles engines and not for the r15.. it can be said like this..

free flow exhaust = least possible restriction to air flow + loud noise +
feeling of going faster when you are actually not going faster.
ffe can be swapped into any bike of similar capacity

tuned exhaust = free flow exhaust + some restriction added to suppress noise ( creates back pressure so that valves are not burnt) + every bit of exhaust is calculated and matched to the capacity of the engine.
tuned exhaust cannot be swapped .its bespoke for every engine..

in case of tuned exhaust, everything like the engine side pipe +
backpressure required + pressure waves effect is analysed. in addition to
this, a tuned exhaust is suited only to a narrow range of rpm.. most are set
for top speeds i.e 7000+ rpm

a tuned exhaust for r15 is generally set for 5000 rpm cos thats where most
owners require the power.. however, as stated earlier, a tuned exhaust can
be designed only for a narrow range of rpms. this rpm can be selected by
user.

in a nutshell, if you want poser value, go for the ffe. if you want better
performance, go for a tuned exhaust..