help me build

[Mossive]

due to the fact im always plannin the next big upgrade...after of course the the timing belt upkeep...im lookin for a full exhaust upgrade and i have decided on the hks cat back the look and sound is amazing...so basically im looking for opinions of everything between the engine and catback...

cat back: http://czp.us/Cart/description...1.252

downs:http://www.importpartspro.com/z14bo2ssdo.html cat:

http://www.ultimatez.com/shop/...t=146

i would do headers to but heard you have to remove the transmission to get in there...

what do you think? approval? hp gains?
Modified by Mossive at 6:59 PM 7/30/2007

[GAZ32]

I would definitely go with some down pipes with the cat back. Maybe the high flow cat converters and some mike smith manifolds if you have the money .

[Mossive]

not that kind of money but i figure instead of getting piece by piece just save up and do it all at once when she is shacked up this cold ohio winter...

any ideas with hp gains?

[GAZ32]

My stillen exhaust system gives me around 20 horse, so id same somewhere about there.

[Zak427]

down pipes will be noticable. they will lower your exhaust temp. and give your exhaust a nice growl will driving. not loud just noticable. i run greg duprees down pipes and i'm very satisfied....

http://www.specialtyz.com

[nsrZ32]

Here's what I recommend:

Catback - HKS Hiper

Downpipes - Specialty-Z/Greg Dupree

Testpipes - Specialty-Z/Greg Dupree

Headers - You don't run them on a TT car and a turbo manifold upgrade isn't necessary with stock turbos. Worry about that when your motor is out some day to build it.

Don't run cats, they'll choke out your performance. Since you're in Ohio I can help you get around running them. The beauty of "Collector's Plates" Once you buy a beater daily driver we'll get you started on that.

[Mossive]

yes! now i have to get a beater....i have been looking but everytime i see one i think to myself i could put that money in the z.... ill quickly overcome that urge when im walking to school in minus ten degree weather...thanks guys!

[Mossive]

zac where in sd ya from?

i went to serra and la costa canyon for highschool

[Mossive]

so how do down and test pipes differ? cuz it seems there all made out of t304.... so why are so expensive and some so cheap?

[Zwicked]

Some downpipes are more expensive than others because the design is better, use larger piping and it's usually stainless steel. The better ones like Specialty Z flare their's out. An important component of the turbo is it's exhaust. The faster you can get the expanding hot exhaust gases clear of the turbo wheel and reduce back-pressure, the less it affects turbo lag and spool up. The other part is the waste gate. It also needs to be divorced from the turbo exhaust outlet so it doesn't disrupt the flow.Check out this work of art: http://www.specialtyz.com/downpipes.htm It may not seem like a big deal, but seeing dyno results there are amazingly large gains from good downpipes, even with stock turbos.I do think though that pretty much any downpipes are still a better option that precats, even if they have been gutted.


Modified by Zwicked at 8:40 PM 7/31/2007

[Mossive]

ok i checked out that site and they have a full system bolted together...i see the downs the tests and the cat back what is the other piece called it looks like tho test pipes turned together to make an X or H iguess

[Zwicked]

The X or H pipe join the 2 pipes to better help scavenge the exhaust and provide a better flow. You can also get it with resonators to to eliminate raspiness, however with a turbo it's less likely then N/T. They also quieten it a bit more.

[Mossive]

i plan on doing coz's turbo upgrade that includes his 3down pipes. is the hks fitting a 2.5 or 3?
Modified by Mossive at 5:59 AM 8/1/2007

[Zwicked]

I don't think anyone else other than Sp-Z makes a 3" DP, especially one that is as nicely designed, but it isn't cheap. They do say that they are working on lowering the cost, and in that case, in my opinion it would be the best one for a long term investment.

[Mossive]

ya the down pipe costing more than the cat back is a kick between the legs but hp is hp and i always need more

[Zak427]

zac where in sd ya from?

i went to serra and la costa canyon for highschool

well bro i'm not from san diego i'm from LA. i'm navy stationed in coronado. and i graduated high school in 93 so i doubt we know each other...

[nsrZ32]

Cassidy....2.5" downpipes will be fine for you. A full 2.5" exhaust system (downpipes, testpipes, catback) will flow more than enough.

[Mossive]

soo about a thousand for the whole 2.5 set up?

thanks guys
Modified by Mossive at 3:49 PM 8/1/2007

[evildky]

for about $200 you can get megan dp's and test pipes on ebay, might flow quite as well but at a cost taht can't be beat and sure beats stock, also optionimports.com, a nico sponsor, has the HKS Hiper for $556 with free shipping!

[Mossive]

also optionimports.com, a nico sponsor, has the HKS Hiper for $556 with free shipping!

oh good spot!