Powerloss after fitting muffler[need help]

Wassup Jazz owners,

I got my muffler fitted onto my car about a month ago, and I noticed that the strenght of the car is not as strong as before when it had the oringinal muffler on and also produces exploding kinna sound. A friend of mine said that its because the standard catalyt is still connected to the system. He advised me to go to workshop and get the cat chopped off and replace it with a steel pipe. He reckons that no harm will be done after that, and power will increase. I need some advice about this.


Ch33rs

so basiaclly ur mate is saying gut the cat, and have no cat back???

that will give you a $10 000 fine on the spot dude..

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Originally Posted by gmug3n

Wassup Jazz owners,

I got my muffler fitted onto my car about a month ago, and I noticed that the strenght of the car is not as strong as before when it had the oringinal muffler on and also produces exploding kinna sound. A friend of mine said that its because the standard catalyt is still connected to the system. He advised me to go to workshop and get the cat chopped off and replace it with a steel pipe. He reckons that no harm will be done after that, and power will increase. I need some advice about this.


Ch33rs

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wat muffler did u get? this is the 1st thread about this kind of muffler problem on jazz. U get rid of the catalic converter, most likely u gonna lose more low end... how big is the tip of the muffler, also wats the pipe size??

vtec_jet

What's ur advice to get the power restore?

Zimp13

Arospeed carbon fibre
pipe size is 2.25 inch...cant remember the tip of the muffler
what do u think i shud do??

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Originally Posted by gmug3n

Zimp13

Arospeed carbon fibre
pipe size is 2.25 inch...cant remember the tip of the muffler
what do u think i shud do??

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jazz has a small capacity engine... 2.25 inch is too big... max size is 2"....also if the tip is too big u ll lose back pressure..... as for the sound, i guess thats the sound that the muffler produces....

this jus soundz wierd in a way there shuldnt really a problem ..
Is it welded on or bolt on? any resonators? first thing i wuld think of is the quality of the muffler and also the installation of the system.. a high flow cat could do the job...

ive seen a jazz wit 2.25 size piping on them, neva thoguht it wuld be a problem... 2 inch wuld probably be a good option to consider though

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Originally Posted by vtec_jet

this jus soundz wierd in a way there shuldnt really a problem ..
Is it welded on or bolt on? any resonators? first thing i wuld think of is the quality of the muffler and also the installation of the system.. a high flow cat could do the job...

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the resonator is on the bpipe of the car... wats that gotto do with the power loss?

a muffler and its piping which are too big for the car will cause loss of power.... cant put a muffler for turbo car on a na car... 2.25" is simply too big for jazz.... i havent seen any 2.25" bolt on muffler for jazz yet

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Originally Posted by vtec_jet

ive seen a jazz wit 2.25 size piping on them, neva thoguht it wuld be a problem... 2 inch wuld probably be a good option to consider though

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really???? :confused:

so if i just replace the cat everything will be fine??guess i have to pop back to the workshop and ask them bout it,sound of the muffler doesnt reallly matter to me but its just not worth it to fit a muffler to get the sound and loses power....

2.25" pipe is too big. You will certainly lose power. Get it changed to 2".