u know i hear quite a bit of people complaining about the lack of power on the stock v8-----either you guys are speed demons that are used to owning super fast high powered cars---or something is wrong with your engines-----need tune up or whatever----because my car has plenty of power------it is said to havbe 250 hp and i believe every word of it----im pleased with my engine completely------i really have no desire at this point to go turbo or supercharged---at one point i was but not anymore.

I think these cars and all cars lose power over their lifespan----im gonna make an assumption and say your engine probably has very high mileage.

 

What could be the factor on not seeing noticeable power gains from no cats and bigger exhausts compared to a 4 cyl Honda? I own a Honda and I can tell the difference and there's even dyno sheets online where even a 3" exhaust on an NA and Turbo motor makes the most power, so what's wrong with the SC400 that seems to not gain much power.

 

Maybe there are not noticeable gains, but there are for sure if you do it right.
It´s well known that the sc´s have very restrictive exhausts.

 

I belive my cat just died. Had a cat CEL that would turn on and off for a few weeks, now the CEL just remains on.
My mechanic told me replacing it would be pretty expensive. What are my options?
- Un-clog the cat? I dont even know if that doable.
- Aftermarket cat?
- Used cat?
- New cat?
- Ive also been contemplating doing a full exhaust. Would this be a good time to do it? (was gonna wait till the summer to do it, but if fixing the cat is gonna cost me half the price of a new set-up I might as well do it now).

 

hey scenforcer i would try gutting the problem cat and see what happens from there-------try cutting the bottom off of the problem cat and rip out all the insides than weld the hole closed again and see what happens --im sure this is cheaper than a new cat and it just might be a better result in the end


I have not tried this myself so please to some research before actually dsoing it---there may be a reason not to that im not aware of

 

I don't know either. I'm hoping it's not something serious that's causing the blue smoke. It didn't shoot out smoke before.

You're welcome.

 

so deleting resonators only increases sound?kinda like a cheap exhaust job

 

Or they are still rocking the stock automatic that is holding the motor back more then anything else.

 

if is pre 95 here nothing illegal

 

i think u can get sard high flow cats doesnt alga have catz

 

For SC300:

Front pipe
HKS - 75mm
Kakimoto - 80mm
Blitz 80mm

These do NOT have bungs for 02 sensor, so if you are OBDII you will need a simulator of some sort.