Ive been reading on here for a while but still do not understand what all the parts do and how they rate in terms of performance. The exhaust system consists: of y pipe, b pipe, muffler, catback and catalyic converter? Right? There are aftermarket parts available for all these pieces by warpspeed cattman etc. The big difference from oem y pipe and b pipe is larger piping and mandred bending which creates more airflow? ? What about effect of aftermarket mufflers designed for max not much increase in performance more for the throaty deep sound right? Catbacks (what are they?) and catalyic converters only need to be replaced if a problem is noticable. If there is a previous thread or page that answers all these questions just send me there and save you the time of typing otherwise dont flame and just answer the questions. Thanks, Oh yeah I see a lot of people using custom y pipes designed by shops. How do the results compare and what is approx costs? Of course the most common bolt on mod CAI: i.e. the package that warpspeed offers has anyone compared replacing just the upper pipe to doing both. Is there much of a difference after doing lower?(costs almost double the price for both. I know none of these will make my car a speed demon but just to make me feel faster in my 160 hp vg

 

new y pipe has better flow because of the shape of it compared to the stock one, much less restriction

check out my page www.prism.gatech.edu/~gte671n/mymax.html in the how-to and I have pics of stock and WSP y pipes

I'd recommend getting CAI and Y from warpspeed

 

Ok... let's try to take this point by point....




*Exhaust system goes in this order from engine, manifolds, Y-pipe, catalytic converter, b-pipe, and muffler...

*Yes, there are a few options to go with concerning all those parts except for the manifolds... they're just well designed so there's no reason to mess with them...

*The way the pipes are bent and the elimination of pre-cats are what give the WSP Y it's biggest gains... the B-pipe makes some very slight gains and those are also thanks to the mandrel bending...

*All the resonator does on the B-pipe is act like a pre-muffler... keeps things quieter basically...

*Aftermarket mufflers will net you a slight gain, but only if you choose the right right one...

*You will never sound like a V8 (though this opinion could vary from person to person) because you don't have the displacement... that isn't to say you can't have a louder and deeper exhaust note...

*Catbacks are just a simple way of grouping all the components from the catalytic converter back... so getting a catback exhaust means getting everything from the catalytic converter back replaced... get it???

*Catalytic converters will provide a slight gain if you replace your stock ones with a high flow cat... or better yet... a test pipe (or straight pipe to some) from WSP... keep your old cat tho if you go with the test pipe, you need it for whenever you do emissions testing...

*Cost varies greatly by the components you decide to get, it's up to you to shop around...

*The whole point of a CAI is to pull colder from outside the engine bay to the engine... replacing the upper part just creates a pop charger system without a resonator which in itself gives pretty good gains and a louder intake, but if you spend money for the CAI why not just go ahead and use the whole thing???




At any rate, I hope that answers all your questions... cause you've reached your limit for the month...

 

 

I paid some guy $200 to remove the precats from my stock y pipe and it made a huge difference
the shop seemed a little shady and stole all the coins out of my coinholder, but it was definitely worth it in the end

 

Why didn't you just buy a WSP??? Minus shipping, they cost the same as what you paid to have some shady a*s mothers mess with your stock Y...

 

i think craig is joking because im almost positive our y pipes dont have pre cats

 

That's the one thing I wasn't 100% on so I tried to look for where I pulled that info... but I can't even remember... so if I'm wrong on that... sorry...

 

Good post anyway... maybe someone should FAQ this Dark Lord Bunny's post!

 

yeah, I was just kidding; I do have a WSP Y already and our stock Y doesn't have any precats in it but I think 4th and 5th gens do

 

Like i said I wasn't 100% on it.... must be an OBD II thing I guess... damned EPA...

 

dark lord bunny you answered the questions and then some. Anyone else have experience with custom y pipes? or the various brands of CAI Place racing warpspeed cattman etc. ?

 

any y-pipe is better than the stock one.

 

if you just replace the stock muffler with an aftermarkert i.e: dynomax, flowmaster, while keeping the stock y-pipe and stock cat, will the noise or tone be any deeper or will it still be the same....

 

It will definitely change because of how the exhaust resonates in the muffler (because it is built differently). But to get the deepest and loudest tone possible you'd have to replace the whole system... go without a resonator on your B-pipe... and remove the resonator on your intake... This just makes one want to stay at WOT all the time for the roar tho...

 

no pre-cats in the y-pipe? i must have a rare one......