If I change my stock cat for a midpipe will my
check engine light trip?
Sorry if this ?? has been asked before.
thanks
Sean

 

when i changed from cats to mp, there was no check engine light.

 

Check to see what the code is:

http://www.scuderiaciriani.com/rx7/engine_codes.html

 

Leave to hose open (venting) that goes to the cat from the smog pump. Do NOT unplug the smog pump and you'll be fine. Check engine light will only come on if you unplug the smog pump.

 

Thanks !Now for a stupid ??? How LOUD is a Midpipe compared to a muffled midpipe?

 

Doesn't the check engine light have more to do with electrical problems?

 

i unplugged my airpump without a code

check engine light is froma a sensor dying or a elec connection coming loose on one of the solonids
run the codes and see what you got

 

It's a huge difference in loudness. My car was perfect before the straight mp, you could barely notice that I had an aftermarket cb. After the mp, you can hear me down the street at idle. I think it's louder then a 2 stroke dirtbike now. A resonated mp will be just a tad louder then the stock cat.

 

When I add a DP to my exhaust with just a catback, will it sound louder?
And if it does will it sound a lot louder?
thank you,

 

depends on wich echaust you have

 

It's a lot louder!!!!!!!!! You almost have to scream at idle to have a good conversation with my car. LOL