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Discussion Starter · #1 ·
what would be better....a catback 2.25" pipe with a high flow cat...or the same but right from the motor...will i get better performance if i do it straight from the motor...because that would give me more air flow right???or do i need the backpressure????please help....i no catback is cheaper....but if i would get more power from doing the exaust straight from the motor...that is what i am gonna do...thanks
Kyle
 

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well im pretty sure you could take off the cats and you wont lose any power but i would go with a good muffler and get a good set of pipes...if you take the cats off tho you wont pass emitions but you should get better power and a nice sound coming out but you will have to get a good muffler cause the stock one dont give much back pressure and that what gives the back pressure not the cats....so get a good set of pipes i sugest(stainless) and a good muffler like dynomax
hope i helped
jimmy
 

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Discussion Starter · #3 ·
i wasn't planning on taking the cat off...i was wondering if i would get better performance if i did a cat back or a whole exaust system
 

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Yes, go with the catback system. Use 2-14 piping or 2-1/2 and if possible get mandrel bends. You may have to order from your muffler shop to get those. Go with the Dynomax muffler or if you want more throaty sound, then the Flowaster 40 of 50 series. Keep your cat and get an intake to help air flow and better throttle response.
All this should cost between 150-250 dollars (US).
Good luck.
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Discussion Starter · #5 ·
why would a catback be better...to me a whole system sounds better then just the cat back because i would get more flow throughout my whole exaust, right or wrong???thanks
 

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The difference between the catback and complete system is the catback will generally have larger diameter exhaust pipe than stock. Also the exhaust pipe is redone from the catalytic convertor to the exhaust tip. Larger pipes mean more exhaust flow. Go with a hi flow muffler of some type and a tip. Later.
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[ This Message was edited by: misnblu on 2001-06-30 02:50 ]
 

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Discussion Starter · #7 ·
ya i no that...but if i got 2.25" exaust from the engine with a high flow cat and a high flow muffler would it be better than a 2.25" catback system with a high flow cat and a high flow muffler...thanks
 

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Dudes, a free flow (likestock) exausht is way better than cat back.
Cat back are for looks, (little gain) but still better.
I'de rather put a high flow CAT and 2 1/4" piping from the bend of the manifold (to keep your torque) and a free flow muffler like mine than to have stock CAt and cat back.

Both are pretty much the same price!!

sorry im so harsh..
Subject to point, my 0.02 $
 

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A catback is not duals Julus. I guess you could consider a dual a form of catback, but my reference is for what your talking about. Stock exhaust is 1-3/4 for our cars and a catback changes that to 2-1/4 or larger. I agree about the downtube off the manifold. Going larger will evacuate the gasses quicker but the stock cat will give you enough back pressure to ensure you have some bottom end. For all out racing you go with the hiflo cat. Good top end, no bottom end.
A cat back is the least expensive way to enhance your exhaust without major expense from the catalytic convertors replacements.
Most will cost from 150-200 dollars (US). Include the larger down pipe and hiflow cat and your near 400 dollars
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Discussion Starter · #12 ·
ya but if i do the whole exaust system right from the motor will i lose a lot of torque because there is no backpressure.....??? Or would i have to go with a reg cat to have a little backpressure...or should i get the high flow one???? i just dont want to lose a tone of torque...but i dont mind sacraficing a bit for more pull in the rpm range
 

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Kyle, yes you will lose some torque if you change your exhaust from the motor to tailpipe. If you plan on racing, then go with the hi flow cat. If you plan on this car to be a everyday steet driver, then stick with the stock cat. It will give you a little more torque and still give you some great top end too.
My plans are to keep stock convertor with my headers (97z) and Ive already got a catback system. Im set for some street racing. Headers are in and I cant wait. Good luck.
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[ This Message was edited by: Misnblu on 2001-07-23 04:53 ]
 

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i say you should do your exhaust from the headers back.(that's if you can find performance headers!)you'll get more horses. instead of 2.25" piping you should use 2.5" w/a high flow cat.
 
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