that removing the mid part of the exhaust on a 97-01 lude is the worst thing to do....
like removing cat will make you lose power? can someone confirm to me if this is true or not? thanks

 

it wont lose HP, but the gains from it isnt worth the troubles it brings up. try a search

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by teg969 &raquo;</TD></TR><TR><TD CLASS="quote">that removing the mid part of the exhaust on a 97-01 lude is the worst thing to do....
like removing cat will make you lose power? can someone confirm to me if this is true or not? thanks</TD></TR></TABLE>

Gutting a cat is a bad idea.

 

Good luck on passing emissions w/ a gutted cat. Just go buy a HI-FLOW cat.

 

will a high flow cat make a good difference? or is it the same as jsut rmoving it? thanks

 

It will make a slight difference (not as much as a test pipe or gutted cat) but IMO it's not worth it - sometimes you can't even pass emissions with a high-flo, I guess it depends on how strict emissions testing is in your area.

 

i would think back pressure would be a factor.

 

backpressure is a big thing with our engines, The only time you want a diffrent cat setup is when your forced induction.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by revlimitx04 &raquo;</TD></TR><TR><TD CLASS="quote">backpressure is a big thing with our engines, The only time you want a diffrent cat setup is when your forced induction. </TD></TR></TABLE>

huh? i was under the impression that backpressure was bad.

 

So far its all been hearsay.

Id say, some back pressure is good. If any of you have worked on a goped or anything like that, if you mess with the exhaust it will change the back pressure, and slow you down BIG TIME. thats a 2stroke though so....

Im not really 100% sure as i am not a liscensed rocket scientist.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by revlimitx04 &raquo;</TD></TR><TR><TD CLASS="quote">backpressure is a big thing with our engines, The only time you want a diffrent cat setup is when your forced induction. </TD></TR></TABLE>

Put up or shutup. Please quantify your statement. SHOW me that back pressure is a good thing for any prelude engine. 'Cause I have dynos that PROVE otherwise. My Lude makes 5 more torque and 3 more horsepower open header vs. crush bent 2.25" exhaust. Tell me why that is. Hmmm? If you have nothing to contribute don't spread misinformation. But then again please prove me wrong I would love the information.

Pirate

EDIT:
red is open header
blue is crush bent 2.25"
As anyone can see gains across the board.



Modified by PirateMcFred at 10:29 AM 9/1/2004

 

From what I understand a little backpressure helps with low end torque, but does inhibit mid and high range power. I'd like to compare those dyno numbers and see if it agrees with what I've heard or not.