UnXpectedError Posted December 11, 2008 Share Posted December 11, 2008 Hey All, I'm going to be buying a Downpipe for my 08 Spec B so that I can Flash to Stage 2. Looking for a Quality piece thats going to fit right etc. Open to Catted and Catless. I'm not overly worried about price, I'm willing to pay. But I also don't want to pay double to get an extra 1% if you know what I mean. Which Downpipe should I be looking at? Thx in Advance Link to comment Share on other sites More sharing options...
holyjoetart Posted December 12, 2008 Share Posted December 12, 2008 If youre going to keep the stock cat-back go with a cobb. A little on the pricey side, but you wont have to worry about fitment between the flanges Link to comment Share on other sites More sharing options...
AKLGT Posted December 12, 2008 Share Posted December 12, 2008 if they have any left, also consider the Harman Motive DP. it's very very nicely made. Wiggle wiggle wiggle wiggle wiggle yeah!!! Link to comment Share on other sites More sharing options...
UnXpectedError Posted December 12, 2008 Author Share Posted December 12, 2008 Cool, anyone know what the deala is with the Catless Cobb DP? http://www.rallysportdirect.com/shop/cobb-legacygt-race-downpipe-manual-transmission-catless-p-2398.html Seems to be on a few store websites but its not on Cobb's webpage? Link to comment Share on other sites More sharing options...
PeterJMC Posted December 12, 2008 Share Posted December 12, 2008 Cool, anyone know what the deala is with the Catless Cobb DP? http://www.rallysportdirect.com/shop/cobb-legacygt-race-downpipe-manual-transmission-catless-p-2398.html Seems to be on a few store websites but its not on Cobb's webpage? I was told by a Cobb dealer that Cobb is moving away from the catless pipes. Link to comment Share on other sites More sharing options...
UnXpectedError Posted December 12, 2008 Author Share Posted December 12, 2008 I was told by a Cobb dealer that Cobb is moving away from the catless pipes. Any Reasoning? Should i just order the Catted verion? Edit, BTW, does the Downpipe make any difference to the exhaust sound? Link to comment Share on other sites More sharing options...
Bolksey85 Posted December 12, 2008 Share Posted December 12, 2008 Not having a cat in the DP will not make any more power so get a catted one. It has been proven time and time again that cats do not rob power below about 400-450HP. Besides, with one, you won't have to worry about visual inspections. Link to comment Share on other sites More sharing options...
UnXpectedError Posted December 12, 2008 Author Share Posted December 12, 2008 Yeah I kinda figured the Catted version would not rob any power. TBH what makes me lean towards catless is they are cheaper. I've been driving for 16 years here in Canada, and i've never had to do a vehicle inspection......don't see that changing anytime soon. Few Q's about the install: 1. Is this a relatively easy install? I'm no mechanic by any means. I change my own oil:lol:, install HID's etc....thats about the most i've done. All i have is 2 ramps to get the front wheels about 6 inches off the ground and your average set of el cheapo tools. 2. I'd imagine i should order the stock gaskets from a dealer? 3. Any other parts/tools besides the gaskets and DP I need? Torque wrench? Link to comment Share on other sites More sharing options...
GTkansan Posted December 12, 2008 Share Posted December 12, 2008 I did mine with ramps too. not hard. Just take your time and its not biggy. Make sure to get new gaskets thought, or youll hate yourself for that damned leak. I only needed a 10, 12, 14, 17 mm wrenches and sockets to get it done. Some extensions help (for the DP heat shield). Oh and if you are going to reuse your stock heat shield youll need a dremel or something to trim it. Link to comment Share on other sites More sharing options...
Bolksey85 Posted December 12, 2008 Share Posted December 12, 2008 I've never done one but from what I hear, it can be pretty easily done in an afternoon taking your time. Use either OE gaskets or try Crucial Racing. Jeremy I think sells very nice copper ones. Make sure you have some PB Blaster/WD40 and soak everything ahead of time. Torque wrench is a good tool to have, period. 2 other things I'd say to buy would be a case of beer and a few pizzas since it's always nice to have friends over to help, no matter how small the job. Link to comment Share on other sites More sharing options...
UnXpectedError Posted December 12, 2008 Author Share Posted December 12, 2008 Sounds like good advice to me:) Is the heat shield a must? Link to comment Share on other sites More sharing options...
ClimberDHexMods Posted December 12, 2008 Share Posted December 12, 2008 Yeah I kinda figured the Catted version would not rob any power. TBH what makes me lean towards catless is they are cheaper. I've been driving for 16 years here in Canada, and i've never had to do a vehicle inspection......don't see that changing anytime soon. Few Q's about the install: 1. Is this a relatively easy install? I'm no mechanic by any means. I change my own oil:lol:, install HID's etc....thats about the most i've done. All i have is 2 ramps to get the front wheels about 6 inches off the ground and your average set of el cheapo tools. 2. I'd imagine i should order the stock gaskets from a dealer? 3. Any other parts/tools besides the gaskets and DP I need? Torque wrench? None of this is new information (it's all on threads here already), but since I'm building the perfect DP now, here you go: The Cobb is a top available DP due to the bellmouth and more durable steel. Catless = cheaper, but has that unburnt emissions smell!!! Catted = cost more, but no smell. Lose maybe 1 or 2 horsepower depending on power level. If you're a detail freak (like me), you'll be unhappy with the exit flange funneling down to 2.5" from 3" to fit the stock catback. I have an aftermarket 3" CBE so... I have a cobb catless DP, and am going to weld in a top aftermarket high flow cat (Magnaflow 59959 http://store.summitracing.com/partdetail.asp?part=mpe-59959 HIGHLY RECOMMEND) though it honestly makes very little difference. It has a smoother flowing cat structure (I blew through it and it was as if it is a hollow pipe with no resistance). Then I'm going to weld on a 3" Vibrant Flange to eliminate the 31% decrease in flow area at the reduced 2.5" exit flange. I'm not saying it's better or worse, just saying I'm doing it. You should just buy the catted Cobb DP unless you have bigger plans. Install: 6" of wheel lift will be pretty tight, but doable. Will need new Turbo-DP gasket, and maybe a doughnut gasket and/or 3" 2 bolt gasket (not sure). Will also need an 02 sensor socket to remove that. Torque wrench highly recommended but not mandatory (needed for the Turbo-DP bolts). Will need to remove the heat shield first, with regular socket wrench. Good luck. [CENTER][B][I] Front Limited Slip Racing Differentials for the 5EAT now available for $1895 shipped, please inquire for details! [/I][/B][/CENTER] Link to comment Share on other sites More sharing options...
fonts Posted December 12, 2008 Share Posted December 12, 2008 +1 for the Cobb. Cobb stopped making catless DP about a year - year and a half ago. If somebody is listing one then they likely just haven't updated their website. I would also expect that they have none in stock. Good luck. Link to comment Share on other sites More sharing options...
franklin Posted December 13, 2008 Share Posted December 13, 2008 I would reccommend that you retourque the bolts after heatcycling. E.G. Install , startup and run until full temp, then shutdown and cool off. When cool retourque. Far less likely to have gasket issues / exhaust leaks. Link to comment Share on other sites More sharing options...
Hops Posted December 13, 2008 Share Posted December 13, 2008 Invidia! Buy my cars! Link to comment Share on other sites More sharing options...
Hops Posted December 13, 2008 Share Posted December 13, 2008 Cobb piece is great, but flange goes back down to 2.5" whereas the Invidia keeps 3". You can hook up both to factory cat-back. Invidia is also much cheaper! Buy my cars! Link to comment Share on other sites More sharing options...
Bolksey85 Posted December 13, 2008 Share Posted December 13, 2008 Don't people run into fitment issues with the Invidia, though? Link to comment Share on other sites More sharing options...
Hops Posted December 13, 2008 Share Posted December 13, 2008 Fitment issues? I've installed a few of these on my cars and friends cars and had no problems. The only problem I can think of is the automatic cars. I know they are different downpipes. Buy my cars! Link to comment Share on other sites More sharing options...
holyjoetart Posted December 13, 2008 Share Posted December 13, 2008 The new Invidias have no fitment issues. Also it doesnt take an O2 socket to pull the sensor. Get a wrench that fits or a crescent. Link to comment Share on other sites More sharing options...
Eblues70 Posted December 13, 2008 Share Posted December 13, 2008 I have a COBB catless which works good for me. Greddy EvoII exhaust, Invidia up, and COBB Stage 2 93 Octane flash. Link to comment Share on other sites More sharing options...
Bolksey85 Posted December 14, 2008 Share Posted December 14, 2008 The new Invidias have no fitment issues. Also it doesnt take an O2 socket to pull the sensor. Get a wrench that fits or a crescent. Maybe that's what it was, older run Invidias had fitment issues. Or AT cars. Or both! Link to comment Share on other sites More sharing options...
Hops Posted December 14, 2008 Share Posted December 14, 2008 It's gotta be ATs... One of my Inividas is a couple years old and it kicks ass. The guys at RallySport have always picked the Invidia over the Cobb. Buy my cars! Link to comment Share on other sites More sharing options...
NSFW Posted December 16, 2008 Share Posted December 16, 2008 My Invidia catted MT pipe lined up nicely everywhere. In fact, everything did: Stock header, Invidia UP & DP, Perrin MP & YP, stock mufflers. Link to comment Share on other sites More sharing options...
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