I have an 08 LS with a 2.25" Dc sports exhaust.. the supporting mods are a CAI, 2.4 intake mani, LSJ header, LSJ DP and trifecta tune. I'm thinking about swapping to a stock LSJ exhaust because it seems to be the same diameter. i was wondering if switching from the DC sports to the stock SS will have a noticable loss in power. i'm a little tired of the louder exhaust when going full throttle and cruising on the highway.. it sounds great but draws a little too much attention.

will i lose power switching to a stock SS exhaust?
thanks

 

I'm not sure if you will, but I would assume you'll lose a very small amount of power because the SS muffler is a bit more restrictive.

 

Most likely as said before you may lose something but I dont think it will be too noticable...If you want to still have the flow but something not so loud on the interstate cruising just put the Magnaflow Catback on! Its a little pricey but I have loved this system ever since I bought it and its almost 2 years now with it....sounds great when on it and quiet when your just cruising....hope this helps

 

Do you have the 2.5" or 2.25"?

 

its sold as 2.5" but the inlet diameter is 2.25" theres only about 6" of 2.5" right where it connects to the DP.

 

They have two separate versions.

2.2 version - 2.25" piping with a straight cut 3" tip

2.4 version - 2.5" piping with a 4" slash cut tip

And that doesn't look like the magnaflow.

 

thats the Dc sports exhaus ti have that's a 2.5", 2.25" inlet diameter exhaust.

it has a straight cut tip

 

this is my exhaust man. it is as follows: 2.5 inch SS mandrel bent tubing, one 18 inch magnaflow resontaor, and a magnaflow 5x8 muffler with SS 2.5 inch tip. paid $440 shipped.

http://www.youtube.com/watch?v=-5h1TXPov_U

 

Where did you pick that up at?

 

http://www.mandrelexhaustsystems.com...alt/Categories

They're awesome. takes about 2 weeks to get to you depending on where you live. is all custom made. hell you can even tell them what kind of exhaust tip you have.

 

http://www.trubendz.com/home.asp

http://www.mandrelexhaustsystems.com/servlet/StoreFront

 

did you not see the url in my post?

 

Pretty sure it wasn't there. You must have edited it.

 

how much hp would he gain swapping out the lsj header/dp. Im wondering cause i figure i'd just put them on, other option be zzp combo for 300, but how much hp would that even give me in a 2.2 that'll never even see above 200 hp (200 max with everything to the engine if i throw in cams maybe...)

 

well i traded my Dc sports today for the LSJ exhaust, right now it's cut for installation so i cant run the car or else it sounds like im running a straight pipe.. ill get it welded tomorrow or so and let u guys know how i fell, ive driver with the DC sports for a year now so i should be able to tell if there is a significant difference

 

Want to know how this goes...definitely interested. What header/dp are you using then?

I'm going to be running a 2.2 Pacesetter w/ Exhaust Depot catless (has resonator though) DP and the stock LSJ cat-back

I'm highly considering going with a ZZP SC setup down the road and I already have the 2.0 Pacesetter which is what I picked up with the DP I have for cheap.

So I'm definitely interested to know the difference on an NA engine...that will determine if I stick with LSJ cat-back or aftermarket if/when I go SC.

 

i also have the LSJ header and downpipe to compliment the exhaust.

if going SC then i personally would recommend a bigger exhaust.

 

imo...you should go with the Cobalt-Addiction V2 headers. they'll give you a lil more HP that the LSJ. I dont know how much, but once again imo, you get a better bang for your buck

 

yea but the LSJ header and DP were about $50 each so $100 total for header and dp.. good enough for me.

 

Here's my deal...if I for sure go this route...I want only about 200whp...not looking for more now or down the road...I want a reliable FI DD so I don't want to push the limits of the engine. I want to make it reliable, yet fun enough that I can surprise the unsuspecting on the road/track.

I have no plans to upgrade internals or change the pulley on it. If I want more power I will buy a Sky RL or Camaro or something else that's RWD and more fun.

I want to stick with the LSJ cat-back exhaust because of sound....I do NOT want a loud exhaust and the LSJ stock cat-back is the only one that I know of that is quiet enough for me...I had a louder cat-back on my old car (99 Saturn SC1 with an HKS setup...sounded good, but was too loud and got really annoying when taking trips on the highway or whatever)...I don't want that again.

Another thing, you say, "I also have the LSJ exh. mani and DP." Was that to me? I don't have that...I have a Pacesetter header with 1.75" primaries and 3" collector and Exhaust Depot DP which has a resonator and no Cat. It is made for the Pacesetter specifically and I bought it all second hand, but new/never installed for only $200 shipped...if you buy these pieces online right now, you'll wind up spending $375 or something close to that. I spent $45 locally for my LSJ cat-back...I'm a bargain hunter.

Basically my idea is that if the LSJ cat-back is good enough to use on a stock SS/SC or one that is only modded a little, then it will be perfectly fine for my purpose.

 

I agreed, i just got the exhaust welded today and its 10 times quieter then the Dc sports, i cant feel a difference in power but the sound decreased tremendsously.. but when i get on it at high rpms it still sounds good. and loug enough for my tastes. i was sick of the loud exhauss as well. so you're planning on supercharging?

 

I'm really contemplating it and will be saving up for it...whether I decide to do it or not, we'll see...I'm very indecisive about things. I'm trying to figure out if I want to spend my extra money on making this car get as many MPG's as posssible (Injen intake, Pacesetter header, Exhaust Depot DP, LSJ cat-back, trifecta tune for MPG's)... OR ....Go SC and just do as I stated above to keep the car reliable and yet have some fun with it.

If I don't go SC, the money I'm saving will just be a lump sum payment to pay the car off (I owe about $6k on it still bought it for $12.5k in July 07). Would be nice to have it paid off by the end of this year...then I will have more money to spend on other things or save towards a Sky RL.

 

this here is just my opinion. so nobody needs to go getting bent out of shape. if your going to spend money on headers, go with the CA V2 set. For a DP, you can get a cheap and great quality SS model from Mandrelexhaustsystems.com. Going SC will definately make your car a lot more fun to drive, but it comes with a price. You gotta worry about the extra maintenance, sometimes everything with the install doesnt go as planned and you end up having to spend more money down the road, you gotta worry about drivetrain components such as the clutch and flywheel, you might wonna consider upgrading the brakes to help stop the car faster, and of course, IT COSTS AN ASS LOAD! If you want to make 200 naturally, your going to have to heavily modify the motor. Cams, valves, valve springs and retainers, pistons, connecting rods, hell you might even have to have the crank rebalanced. I'm all for you trying to make 200HP...i always say whatever floats your boat and tickles your pickle. thats just my opinion. good luck to ya

 

Great info to make people think about the overall costs of everything...I for one have done a lot of thinking about these things...that's why when I was younger my dad told me I should've bought a Z28 or something of the likes to beat on because it would tolerate it a lot more than my little compact FWD cars I've always owned....I even thought about going the cheaper route and picking up the V6 version and swapping the engine, then I realized it would be more work and worry because the V6 and V8's have a lot more differences to them than just an engine and suspension.

That's why I'm starting with my handling aspect first...I upgraded my pads and rotors (should be no reason to go bigger), I'd like to do something in the rear for the drums, but I can deal with that later. I know I could do a rear disc swap, but it might be more work than it's worth. I did rear sway, will be getting Pedders and have SS/TC struts/shocks to replace my Sportlines and FE1 crap. I'd like to upgrade the front sway bar with an FE5 sway and FE5 LCA's. I have TTR engine and tranny mounts on the way (I'm auto btw, so that is my only option for those). I don't have to worry too much about the tranny as I know the auto will take a decent amount of power. To be honest, if I stick with my I/H/DP/E/Tune plans instead of FI, I'm still going to be running 91/93 (whatever they sell around here)...so I'm not worried about gas prices. I already use synthetic (switched over 2 oil changes ago)...Royal Purple for the first because I paid less than $5 per quart...now I just buy whatever is cheapest...happened to be Mobil 1 this time. I'm one of those people that over analyzes everything and I'm always changing my mind and don't know what I want to do....so as I said, my car may wind up being MPG and handling only. There's other stuff as well...and a few more cosmetic things I'd like to do as well, but those don't matter here. The only dilemma I have is whether I can get an intercooler to fit behind the stock front bumper cover or not...if not, I'd have to pick up an SS/NA bumper that would allow it to work. Actually I'd prefer an LT bumper if possible because of the removable lower grilles which are larger openings for air to flow and the car still looks pretty much stock on the outside.

I have always heard horror stories about CA's shipping and what not so that's why I've never bought anything from them...I've heard their products are great though. My only concern with my exhaust setup is whether it will be annoying having the catless Exhaust Depot DP on there...it does have a resonator, but I don't know how well it helps the sound.

 

i'm going to be honest dude, having that catless DP without a resonator is going to make it sound like a riceburner. there's plenty of videos on youtube to support this. i'm a believer in keeping the cat in place. if you want to go high flow thats fine, but no matter what keep that resonator in place. its true that CA does have shipping issues, but you can order their products on ebay brand new from other dealers. actually if you call CA directly, i heard it wasnt that bad. as far as the rear brakes go....keep in mind that brake pressure on our cars is roughly 90% front and 10% rear. i also have upgraded rotors...powerslots with EBC redstuff pads. my car handles quite well. I have eibach front and rear sway bars, monroe struts and shocks and an ARK strut brace. i too have the TTR engine and tranny mounts, however im a MT. in my opinion, handling means more to me than power. you can use handling more than power, and have A LOT more fun with it!