Car has a loss of power, hesitant

[Drew707]

So a bad cat can cause a loss of power and poor gas mileage?

 

[001Stunna]

so a bad cat can cause a loss of power and poor gas mileage?

yes

 

[Drew707]

yes

so if i hollow out my cat will the problem go away? or would i lose even more backpressure?

 

[001Stunna]

so if i hollow out my cat will the problem go away? or would i lose even more backpressure?

If the cat.converter being blocked is the issue then the problem should go away...if its only one of the issues then the problem may persist.

As it is right now you are NOT loosing backpressure, there is actually too much of it since the exhaust gases cannot freely pass through the cat (due to it being possibly blocked)

Understand that if the cat.converter is rattling you WILL have to change it anyways if you want to pass smog/emissions. By hollowing out your current cat.converter you're just using it as a means to diagnose the problem.

 

[Drew707]

If the cat.converter being blocked is the issue then the problem should go away...if its only one of the issues then the problem may persist.

As it is right now you are NOT loosing backpressure, there is actually too much of it since the exhaust gases cannot freely pass through the cat (due to it being possibly blocked)

Understand that if the cat.converter is rattling you WILL have to change it anyways if you want to pass smog/emissions. By hollowing out your current cat.converter you're just using it as a means to diagnose the problem.

thanks that helped alot. i am going to buy a cat b4 i have to smog it. so for now ill just hollow it out.

 

[Russianred]

If you can, try to get a used or at least an aftermarket one - that will save you hundreds. Hopefully a clogged cat is your issue, and hollowing it out will solve your problems. Don't forget to look into the spark plug defouler trick for your o2 sensor, so you do not throw a code, if emissions are necessary or CEL's are something you want to avoid.

 

[cirsurvive711]

My cat went to sh!t last spring, rattled, crap gas mileage and loss of power. I got a new one on eBay for around $120 shipped. Passed emissions with flying colors :jarred:

 

[Drew707]

If you can, try to get a used or at least an aftermarket one - that will save you hundreds. Hopefully a clogged cat is your issue, and hollowing it out will solve your problems. Don't forget to look into the spark plug defouler trick for your o2 sensor, so you do not throw a code, if emissions are necessary or CEL's are something you want to avoid.

whats the spark plug defouler trick?

My cat went to sh!t last spring, rattled, crap gas mileage and loss of power. I got a new one on eBay for around $120 shipped. Passed emissions with flying colors :jarred:

i cant find any cal state legal cats on ebay. there are some knock off magnaflow ones for 60$. but doesnt say anything about smog legal. and 1 real magnaflow one for 250$

 

[jeffpanya]

i gutted my cat not too long ago, i scraped my whole car down the freeway and guess my cat scraped on it too after that my car had no power at all gutted my cat and eveything is fine, i always had a cel for my o2 so im not sure if gutting the cat will change anything i also have headers and fully straight piped hahha i freaking hate it but oh well my car can shoot flames now and backfires occasionally too which i think is cool

 

[cirsurvive711]

whats the spark plug defouler trick?

i cant find any cal state legal cats on ebay. there are some knock off magnaflow ones for 60$. but doesnt say anything about smog legal. and 1 real magnaflow one for 250$

http://clubhondahawaii.proboards.com/index.cgi?action=display&board=diygarage&thread=53&page=1#266

Damn. I'm in Pennsylvania.