Can I drive my 2000 Si with out a catalytic converter or back? All that is on there now is the stock header and nothing after that, I sold my exuast and will not get the stock one for about a week! Will it hurt anything to drive or will it even drive? I don't wnat to mess anything up! Should I park it or will it be ok?

 

You can drive like that just fine. It'll be loud though.

EDIT: You won't have a secondary 02 sensor plugged in, so you will throw a CEL that you will have to reset when you get another catalytic converter, but you'll be fine. Just get it up out of the way.

 

not sure if it will be ok but have you started it and listened to it yet... we started my friends R with nothing after the cat when we put on his N1 and im sure you could here it from at least a half a mile... im not sure where you live but you will probably get pulled

 

Yes you will hurt something.. your ear drums

 

and to your sense of smell

 

I have started it and it is really loud, but i don't care about that, but will it any way damage the engine? that is all i want to know!

 

its not good for the motor to drive like that all the time plus you will get a ticket really ****** quick.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16si &raquo;</TD></TR><TR><TD CLASS="quote">its not good for the motor to drive like that all the time plus you will get a ticket really ****** quick.</TD></TR></TABLE>

Explain how it hurts the engine?? I agree with the ticket part, but explain the first part please?

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by b16si &raquo;</TD></TR><TR><TD CLASS="quote">its not good for the motor to drive like that all the time plus you will get a ticket really ****** quick.</TD></TR></TABLE>

Yea, I forgot to say if you dont have a cat your motor instantly blows

::waits for your explanation on how this hurts the motor:::

 

It doesn't hurt the motor, there is no conceivable way that this would hurt the motor. Will it hurt the performance? Maybe, probably, but I've never seen a motor dynoed with no exhaust.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by sickSOLvtec &raquo;</TD></TR><TR><TD CLASS="quote">It doesn't hurt the motor, there is no conceivable way that this would hurt the motor. Will it hurt the performance? Maybe, probably, but I've never seen a motor dynoed with no exhaust. </TD></TR></TABLE>

8grandEG on this board ran a 14 flat at our local track with no exhaust on his B18C hatch. On the dyno with his stock exhaust on he barely hit 140whp. It does make a difference.

 

totally.. it would be LOUD as hell.. probly some gas mileage issues without the o2 down there... other then that.. have fun pissing neighbors off and being pointed at.. if you car about that kinda stuff.

 

You should be fine for a couple weeks, just don't get past 4k, and don't downshift around there either or you may see some flames .

You'll also lose a little torque by doing this too, but I don't think your concerned about that. I just read that someone was talking about dynoing a car without exhaust.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by Ricey McRicerton &raquo;</TD></TR><TR><TD CLASS="quote">

8grandEG on this board ran a 14 flat at our local track with no exhaust on his B18C hatch. On the dyno with his stock exhaust on he barely hit 140whp. It does make a difference.</TD></TR></TABLE>

Yes, thats why I did not want to say for sure.

 

I don't know, I would definetely say that there's a good chance idle will be rough, since your second 02 won't be able to deliver accurate information to your ecu. But besides tickets, rough idle, bleeding eardrums, smell of burning carbon(from a mile away), and a feeling of hot coals on the floor if you drive barefoot(I know you soCAL kids are into that)...... You have nothing to worry about.

 

there is no way you could drive it, IT IS INSANLY LOUD, i had to do it for a few miles shook SO MUCH couldnt use my rear view mirror, and coulnt go over 3000k it is awful awful awful

 

lol I am gonna try and not drive at all till I get my stock exhaust! thanx for the info guys!

-clint

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by SiRcyrusEH2 &raquo;</TD></TR><TR><TD CLASS="quote"> coulnt go over 3000k it is awful awful awful</TD></TR></TABLE>

i took my motor to vtec with an open header (on the way to the muffler shop). man... it pulled like crazy

 

yeah my friend got a b16 in his ef and the shop didnt put his exaust on we had to drive it home i swear the car rattled apart not to mention the unbearable sound but dear **** was the vtec loud!

 

speaking of which, does anyone have a d16y8 or z6 catalytic converter?