Exhaust choices on an 87 daytona

[Foxmxrcer]

Hello everyone,
I just got myself an 87 daytona (shelby Z) its the turbo 2, yada yada yada.... Im planning on getting this car up around 300hp or a little less, I figured since I see everyone saying that the exasut is realy restrictive, that Id start there. Right now its the stock system with a catback(i think its stock replacement). I realy like the side exit pipes, but I cant get this car to be insanely loud to the point of which ill get pulled over by every cop that passes me ... I was thinking of 3" pipes the hole way back with rear exit, or 2.5"/3" side exit pipes. Any suggestions? its cant be extremely loud, its gotta give me more power and it has to be "legal" (mom will be pissed if it dosnt pass inspection )

Thanks, Jake

[440trk]

Since you're in Pa. Ditch the idea of running side exhaust, unless you KNOW of an inspections place that will pass it. The wording was changed regarding side exhaust in the State inspection code a few years ago, and there's a bit of interpretation that can be utilized by the mechanic. Some mechanics will NOT pass a "before the wheel" exhaust system anymore, unless the car originally came that way. Some mechanic's won't enforce it. Play it safe, and run it out the back unless you KNOW who's going to inspect your car, and that they'll let the side exhaust go.

[GLHNSLHT2]

3" with a bullet muff out the back to pass and a hi-flow cat if you need it. But you'll need to get either an 89 2.5" Swingvalve/O2 housing or the TU 3" SV.

[Foxmxrcer]

440trk- damn that sucks... never new of that :-( ...where about is "near harrisburg", im in a lil town called Lewisberry...about 15minutes from h-burg

GLHNSLHT2- thats for the suggestion... theres and 89 daytona down the road forsale, if its cheap i was gonna grab it for parts... so thatd work out if it is...haha

[GLHNSLHT2]

just make sure it's an intercooled model as the 89 Mitsu turbo's SV will not bolt up to your garrett.

[capev86]

my plan

T2 garret w/ a Turbos Unleashed 3" swing valve and FWD Peformance complete 3" stainless exhaust! it will look and perform awesome and last forever!

[tryingbe]

No point having a 3 inch swing valve and keep using the .48 housing. Upgrade the housing FIRST before upgrading the swing valve. That housing is a LOT more restrictive than the swing valve is.

[GLHNSLHT2]

I have to disagree. A buddy put a TU 3" SV and 3" side exit on his T1 GLH. Not the best move optimally I know but the thing did scream. If you're gonna do exhaust do it once rather than have 3 different setups over time. The 3" SV can be swapped from turbo to turbo if he upgrades later.

[Foxmxrcer]

GLHNSLHT- yea the 89 is an intercooled, basicly the same exact car as mine...only an 89

so i see everyone is pushing me towards a 3" setup.

when you say upgrade the housing, your talking from the stock .48 to a .63? what are the benifits? just more airflow?

prices.
full exaust system-555$
high flow cat-125$
larger housing- 185$
3"swing valve-250$
total- $1,115

I know some1 is goign to bring something else up that I need... so lets hear it...haha. Also, What on that list will not give me an increase in power? or rather, what will give the least. I only have about 2500$ in my bank, and i need to keep at least some of it..

[GLHNSLHT2]

well you can use the 3" exhaust system on the 89's 2.5" SV. So $240 for an entire 3" exhaust system. Add a muffler and cat of your choice. A cat and muffler and you're looking at about $450+shipping on what you need shipped. Great street setup. I'd leave the housing and 3" sv till later on down the road.

[tkelly27]

Cat and muffler for $450? Wtf are you smoking? It's new years, pass it around!

http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
That's what... like... $80? Maf is hrd rihg naw!
3" swing valve, 3" down pipe, 3" 90* mandrel bend, and $50 in gas to find a shop to pass you and you're in fat city, all for less than you were figuring for just the tubing. Can I reccomend a cut out for $20? I love mine. You don't need to upgrade to the .63 turbine, and doing so while keeping 20 year old 2.25" (necking down to god knows how small) exhuast system is, IMO, not really worthwhile. The .48 is a big restriction, but there are more than a few cars in the 12's with it. When you've got the 3" the .63 will rock! Back to drinking *rock'n'roll*

[tryingbe]

Quote:

Originally Posted by GLHNSLHT2 I have to disagree. A buddy put a TU 3" SV and 3" side exit on his T1 GLH. Not the best move optimally I know but the thing did scream. If you're gonna do exhaust do it once rather than have 3 different setups over time. The 3" SV can be swapped from turbo to turbo if he upgrades later.

Your buddy did two thing at the same time, 3 inch valve and 3 inch side exit. I have a 3 inch downpipe with a stock exhaust cat back and an exhaust cut in front of the cat. Yes, HUGE different when the cut-out is open.

You can also swap the exhaust housing from turbo to turbo. I bet $$$$ that upgrading to a .63 housing with a 2.5 inch swingvalve will gain more net power and net torque than having a .48 housing with a 3 inch swingvalve. Of course, having both .63 housing and the 3 inch swing valve will be best.

Quote:

Originally Posted by Foxmxrcer when you say upgrade the housing, your talking from the stock .48 to a .63? what are the benifits? just more airflow? prices. full exaust system-555$ high flow cat-125$ larger housing- 185$ 3"swing valve-250$ total- $1,115

Allow mor airlfow on the mid and top end, that means MORE torque and HP where you need the most for these engines.

.63 housing
3 inch cat
3 inch swingvalve
3 inch downpipe
3 inch cat back
3 inch muffler
4x 3 inch exhast clamps

Cost $838.80 plus shipping from TU.

http://********************/shop/index.php?cPath=53
http://********************/shop/index.php?cPath=111

You can even find lower prices for the cat and muffler.

Or you can do like my system.

Go for .63 housing, 3in swingvalve, 3 inch downpipe and exhaust cut out and and electronic cut-out controller.
Don't need the 3 inch cat, 3 inch catback or 3 inch muffler. Will be loud and fast when you want, stock quiet and pass emission test fine when you need.

[GLHNSLHT2]

Quote:

Originally Posted by tkelly27 Cat and muffler for $450? Wtf are you smoking? It's new years, pass it around!

Slow down and read it. $240 for the exhaust. $125 for a cat + $50-100 for the muffler (bullet).

[Foxmxrcer]

alright, sounds good tryingbe. Quick question though, I want the stage 2 wheel size, right? Anything else that i need thats cheap?(going by tryingbe's list)

Thank you everyone for all of your help.

Oh, and what do you all think my HP and ftlb gain will be?

[GLHNSLHT2]

your turbo has a S1 wheel. I didn't notice much going from a .48 to a .63 housing on my 2.5. Both had a ported exhaust manifold and big 3" exhaust. I noticed more going from a stock compressor wheel and .63 housing to a true S60 turbo which was basically a compressor upgrade on the turbo I had.