Hi-flow cat or straight thru

[Jack86sg]

Any bro can advise or gif diff gain for the hi-flow and straight thru for manual car (vios).

option 1 ) change hi-flow cat

option 2) straight thru whole mid-pipe to 2 inch.

currently using 4-1 extractor.

 

which is better?

[Jack86sg]

any bro can assist

[Chassis]

Any bro can advise or gif diff gain for the hi-flow and straight thru for manual car (vios).

option 1 ) change hi-flow cat

option 2) straight thru whole mid-pipe to 2 inch.

currently using 4-1 extractor.

 

which is better?

 

for manual car use test pipe,2inch mid pipe and straight exhaust.

[Jack86sg]

for manual car use test pipe,2inch mid pipe and straight exhaust.

 

wat is test pipe? wats the diff from straight thru exos..

[Subarugt]

u will gain mid to high end but its illegal unless u get an approved lta muffler... but if u do mid pipe too than its illegal too

[Tham2005]

Do all the above and dont get those branded stuff, save the money for LTA fines .

 

Good luck!

[Jack86sg]

u will gain mid to high end but its illegal unless u get an approved lta muffler... but if u do mid pipe too than its illegal too

 

wat is better? hi-flow or test pipe or straight thru? or wat the diff in gain for individual mod?

[Sk65]

izzit also more noisy?

for straight thru

[Versatile]

izzit also more noisy?

for straight thru

 

Straight thru is noisy if your muffler box is emptied without stuffing.

[Jack86sg]

so which is more noisy if using opt exos. hi-flow/straight thru/test pipe? and wat gain is better for manual ride?

[Cerano]

im using stock exo with high flow cat and no apparent noise increase but with the performance increase...

 

straight through guarantee noisy

[Xylitol]

test pipe is also straight through if i am not wrong

 

if the whole setup is straight through ( testpipe + free flow muffler) confirm noiser than hi flow cat

[Swiftevo]

upz

[Kanta]

You aren't increasing performance, just reducing restriction with more air pollution.

Get a proper header, than straight all the way to your stock muffler is sufficient.

[Jack86sg]

straight or hi-flow or decat all will be pollution to the air tats y not approved..

[Ralliart-trek]

hi guys, im on this setup.. decat, then put straight thru pipe in the cat, mid pipe and stock muffler. with stuffing .. sound wise, slightly bassy and loud.. performance is good! but still not loud enough for my liking haha!

[Porker]

Hi flow cats safer...

 

What car are you driving btw?

[IPineapple]

Thanks for the tip