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<IMG SRC="http://www.icstew.com/v70r/exhaust/115.jpg" BORDER="0"><p>Here are Pete's observations on three cat-back exhaust options that fit the 1998-2000 V70 AWD cars: the "regular" AWD, the XC, and the R. <p><B>Spotting the AWD V70:</B><br>For those who don't know, the US market AWD V70 listed above came with a dual muffler system with a single exhaust outlet exiting from a cut-out in the right rear bumper, with the exception of the 2000 V70R (which I will get to in a moment). <p>There is an exhaust outlet cut-out for the left muffler but it is covered over with a plastic "patch", held in place by two plastic rivets. All the US market MY '98 - '00 V70s that do not have AWD exit exhaust from a single outlet on the left, and a different bumper cover that does not have a right side cut-out.<p>For the model year 2000 Volvo put a dual outlet exhaust system on the V70R AWD (a very rare car). The good news is this system is an exact fit for any 1998-2000 V70 AWD. Volvo part number: 9470703 (chrome tips not included).<p><B>1998 V70R AWD with stock single outlet exhaust and "patch" over the left muffler outlet. </B><br><IMG SRC="http://www.icstew.com/v70r/exhaust/0115.jpg" BORDER="0"><br><B>shown:</B>on the ground is a stock 1998 V70R AWD exhaust system. Note left bumper outlet cover has been removed. the exhaust flows into the left muffler, through a baffle system and then out the back and across to the right muffler, which has a "straight-through" baffle system. On the car is the IPD/TME dual "sport" system.<p><br><B>2000 V70R AWD dual outlet exhaust</B><br><IMG SRC="http://www.icstew.com/v70r/exhaust/114.jpg" BORDER="0"><br>The "end pipes" are Volvo parts 8631696 and 9470988. The end pipes are slightly different in length, and have bolts to "pin" them on the muffler flanges--shame on Volvo.<p><B>More than Just a Second Tip</B><br>It appears as though Volvo's dual outlet system on the 2000 V70R AWD is the single outlet system with a hole punched into the left muffler where a flange was welded to attach a second exhaust tip ("end pipe"). But there's more to it than that. Even though the mufflers are the same size on the two systems, and the pipe diameter and routing is the same (the exhaust goes into the left muffler and then exits from the same side across to the right muffler). <p>Volvo did some "tuning" to the internal baffles of the mufflers which give a pleasant, deep exhaust note without the intolerable drumming that plagues the IPD/TME dual system. <p>In the first photo above note that the flange on the left muffler is restricted--smaller than the right muffler outlet. Looking into the left muffler you see the internal outlet tube is not open on the other end, but perforated along the sides to limit the flow of exhaust and re-direct the flow across to the right muffler. Looking into the right muffler you can see the internal baffle configuration is much different from the single outlet system--it is more restrictive.<p><IMG SRC="http://www.icstew.com/v70r/exhaust/0121.jpg" BORDER="0"><br>On the Volvo single outlet system the right muffler has a "straight-through" design, and the left muffler acts as a baffled resonator. I have to wonder if the single outlet system flows at least as well as Volvo's dual system; perhaps even better! <p>But clearly Volvo has spent some time designing and tuning these exhaust systems. There is absolutely no annoying cabin resonance from either Volvo system at any engine speed. The arrangement of mufflers, baffles, and piping provide excellent sound damping with an authoritative growl under wide open throttle. The single outlet system on the 1998 V70R AWD is all but silent except under WOT, whereupon it lets you know the beast is angry. The dual system on the 2000 V70R AWD is still very civilized under normal driving--exactly the kind of note a sophisticated Volvo owner would appreciate, but it is definitely a bit louder and lower in tone--a distinctive "rumble" at idle, and a bit more of a beast when awakened. I believe this was the intention Volvo has by offering the dual outlet system: it's purely for <br>audio/visual aesthetics--I doubt if there is any performance advantage of the dual system over the single system. I say this because there is no dual system on the 300hp MY2004 R cars.<p><B>IPD/TME "sport" cat-back system</B><br><IMG SRC="http://www.icstew.com/v70r/exhaust/121.jpg" BORDER="0"> <br>This kit comes in three pieces with all the clamps you'll need. The build quality is excellent, and when properly installed it looks fantastic. There are two major problems with this system: it's very very very difficult to install (even for teams of "professionals"), and it produces very annoying cabin resonance under "light throttle" between 2000 and 3000 RPM, which is exactly where you spend most of your driving time. I decided to remove this system within 20 minutes, it's that bad. <p><IMG SRC="http://www.icstew.com/v70r/exhaust/122.jpg" BORDER="0"><p>Which is a shame, because it's not a loud system. From outside the car it's perfect--lower in tone than the Volvo dual system and very slightly louder--very pleasant. Under WOT it's like a Mahler crescendo: thrilling, bold, intense, god-like.Thor's Hammer! Throttle response is quite obviously faster, and so is the car in the upper torque band. This system is very definitely a performance gain, and it looks fantastic. The flow from the cat is split equally to the two "straight-through" & "mufflers" which are packed with rock wool or something similar (like glass packs). <p>The system is an exact fit, but it's very hard to find an installer who will take the time needed to do it correctly on the first try. It takes at least two people to install this kit. I went to three separate "expert performance exhaust specialists", a total of 8 mechanics worked on this system for me. One shop even cut the clamp on the ball and socket joint behind the cat, in an attempt to adjust the system as per the instructions provided by IPD. The result was the "modified" clamp cut into the driveshaft, scoring it permanently (Note: IPD does not suggest you do this, only that you loosen this clamp while "adjusting" the system). I had these "experts" remove the system and pay for a new clamp. <p>After driving around for a week with the IPD/TME system, making trips to four different shops in an attempt to adjust it so it wouldn't bang, bump, scratch and rumble inside the cabin, I gave up and had the original Volvo single exhaust put back on. But after seeing how cool dual pipes look I couldn't live with a single pipe and that stupid bumper patch. I went to a regular Midas shop and one guy was able to remove the single and install the Volvo dual muffler in under an hour. No sweat. $50. Now I have three exhaust systems for my car. What a fool am I.<p>You can order the Volvo dual system from MyVolvoParts.com or from your dealer. Expect to pay ~$250 to $276, more or less. This does not include the end pipes, which are different lengths (~$66 each from the dealer). Your Volvo dealer parts guy may give you a hard time about this and ask for a VIN. He might even go on about back pressure and the like--a sure sign that he's clueless. Don't take any crap--if it wasn't for fools like us car manufacturers would still be building "horseless carriages". <p>Give your the parts guy the numbers:<br>9470703 muffler, R<br>8631696 end pipe<br>9470988 end pipe. <p>There is no trim piece to fit around the left outlet so it matches the right--you'll get used to it, or if you're creative you can cut the "patch" that came on the car so that it matches the right side. You might want to consider ordering the exhaust tips from IPD instead of the Volvo end pipes--they cost about the same, look much better, and have a proper clamp instead of the idiotic bolts.<p>Oh, one more thing: be careful when removing the rivets from the bumper patch. Don't go grabbing the "hat" with pliers or trying to pry it out with a screwdriver--it will break right off. Get a flashlight and a stiff bit of wire like a coat hanger so you can push out the center pin that spreads the rivet apart holding it in place. Once you've pushed out the pin the rivet can easily be removed.<p><br><B>IPD/TME exhaust system tip</B><br><IMG SRC="http://www.icstew.com/v70r/exhaust/120.jpg" BORDER="0"><p><IMG SRC="http://www.icstew.com/v70r/exhaust/0121.jpg" BORDER="0"><br>above Left: 1998 V70R AWD stock exhaust system<br>above Right: IPD/TME dual "sport" exhaust system<p><IMG SRC="http://www.icstew.com/v70r/exhaust/121.jpg" BORDER="0"><br>above Left: 2000 V70R AWD factory dual exhaust<br>above Right: IPD/TME dual "sport" exhaust (tips welded on)<p><IMG SRC="http://www.icstew.com/v70r/exhaust/122.jpg" BORDER="0"><br>IPD/TME system (chrome) and the Volvo dual system. Note that the Volvo "end pipes" are not exactly the same, and have a stupid bolt for attachment instead of a proper clamp. Don't get the Volvo endpipes, order the IPD tips. Also that "C" is a trim piece for the 2000 V70R right side cut-out. It does not fit the left side. There's no trim part for the left side bumper cut-out.<p><br><B>1998 V70R AWD with IPD/TME dual cat-back system</B><br><IMG SRC="http://www.icstew.com/v70r/exhaust/123.jpg" BORDER="0"><br>Wheels: 16-inch "Meteor" with 205/55/ "Y-speed" Michelin Pilot Sport Rotors: cross-drilled and slotted with Kevlar pads (should have painted the hats first).<br>Yes, I sent my ECU to IPD for tuning..highly recommended. <p><IMG SRC="http://www.icstew.com/v70r/exhaust/0116.jpg" BORDER="0"><p><br>Thanks for the info and picts Pete. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

<BLOCKQUOTE>quote:<HR>Wheels: 16-inch "Meteor" with 205/55/ "Y-speed" Michelin Pilot Sport Rotors: cross-drilled and slotted with Kevlar pads (should have painted the hats first).<HR></BLOCKQUOTE><p>I know what you mean about painting the hats. I should have done that to my new brakes as well. Hats were rusted in two freaking days.<p>About the IPD exhaust. Are the tips removable. Can I use a different tip like say the Volvo twin end pipe. I think the car would look tough as hell with a twin end-pipe tip on each side.
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

How come two different length tips had to be used with the OEM dual muffler system? I used two 9470988 tips and it seems fine. Which one is the longer? Another thing I did before I installed my OEM system was to put on a few coats of high heat black paint. The OEM system comes in a dark greyish charcoal color...I couldn't find that color in high heat, so I just went with black. I'm so glad I sent back the IPD dual muffler exhaust and got my money back...it was too much of a head ache getting that thing adjusted every couple of weeks. I'm very happy with the OEM dual system...I put it on myself and haven't had to touch it since.
 

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Re: V70 Dual Exhaust System Demystified (deleonl1)

the large tips of the IPD system look pretty sweet. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

<BLOCKQUOTE>quote:<HR>the large tips of the IPD system look pretty sweet. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <HR></BLOCKQUOTE><p>They do look sweet. But I think that the twin tail pipes on each side would give it a tougher appearance. Just curious. Anyone?
 

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Re: V70 Dual Exhaust System Demystified (larryo108)

Like the W8 Passat? <p><IMG SRC="http://www.vw.com/art/passat/gallery/gal_zm_ext_4.jpg" BORDER="0"><p>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

<BLOCKQUOTE>quote:<HR>Like the W8 Passat?<HR></BLOCKQUOTE><p>Yeah like that. Don't get me wrong, I don't want my Volvo to be anything but a Volvo. I do however, like the twin tailpipe look better.
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

I've found that by keeping the revs up, interior rumble is null.(stay out of D4 in town) <br>I can give you a guy's contact info who put my ipd/TME system on in one shot with very little help from me. <br>ipd/TME just looks sweet when kept clean.... <p>I've also had very good luck with my ipd Plug and Play chip. Initially I thought second gear didn't come on with enough authority under full boost, but I can see where the trans could become very fragile if second wasn't protected some.<br>Griff<br>
 

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Re: V70 Dual Exhaust System Demystified (Griff_33)

Hey Griff, I'd like to get a listen to your IPD exhaust before you sell it. maybe I can setup a video camera and try to record the sound level in yours vs the sound level in mine. Or if someone has a dB measuring tool we could get some accurate numbers on how much louder it may be while cruising. Hopefully the "drone" can be picked up on audio recording. <p>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

Chris,<br>When and where? I'm burning leave through the rest of the week.(I'm off) <IMG NAME="icon" SRC="http://********************/smile/embeer.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/embeer.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <br>I go back to work on Monday, 01/06. <br>Griff
 

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Re: V70 Dual Exhaust System Demystified (Griff_33)

I am stuck working. Grr!! I am in MS Project hell. I work just off 495 at route 50. ( at Prosperty Road ). <p>Could you swing up this way? I can take a long lunch or something. <p>Pete - I don't have a digital meter. damn. and I don't know of anyone near who does. I understand the vibration sound you describe - like a fully open sunroof at a low speed - cracking a window stops the buffering effect.-- a major PITA.<p>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

How does Friday, 01/03 look? What time do you take lunch? <br>Mobile: 202/497.4519<br>Griff
 

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Re: V70 Dual Exhaust System Demystified (Griff_33)

<br>tomorrow is good with me. I am flexible with time. I'll be sure to punch out and not charge the Army for my time. <IMG NAME="icon" SRC="http://********************/smile/emsmile.gif" BORDER="0"><p>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

Very nice post, Chris!!! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p><br>Yannis
 

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Re: V70 Dual Exhaust System Demystified ([email protected])

<BLOCKQUOTE>quote:<HR>I don't know if you guys are interested, but the above would make a great article to add to the Tech section...<p>If you are interested, email me at [email protected]<br><HR></BLOCKQUOTE><p>I was about to recommend that as well. Excellent writeup! <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 

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Re: V70 Dual Exhaust System Demystified ([email protected])

sounds good george. <p>Pete, do you have higher resolution versions of the photos?<p>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

<B>CounterPoint:</B> <br>Griff came to northern VA in his very nice modified '98 R. It is equipped with the ipd ecu upgrade and exhaust. I shot some video and picts (hopefully I'll get to post them tonight). <p>1. The sound at idle is nearly identical to the 2000 R dual exhaust<br>2. 2k-3k rpm driving, the characteristics are nearly stock<br>3. On hard acceleration there is a sweet throaty rasp that fills the cabin.<br>4. The "drone" type of sound, in my opinion, sounds much like a tuned S4 or other performance sedan. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0"> <p>The drive was about a 5 mile loop and from an enthusiast point of view it was nice to hear a little more "beast" from under the hood. I think the interior sound of the ipd exhaust really does come down to personal taste. I found it to be a refreshing tone. It is quiet enough to still stay below the radar yet when at WOT your passenger will give you a look and most likely will have a big smile on their face. And I think it might pass the wife test with a simple response of: "honey, that's just the engine breaking in." <IMG NAME="icon" SRC="http://********************/smile/emsmile.gif" BORDER="0"> <p>The '98 R with a chip & exhaust felt very similar to my '00 R. Griff, what did you think?<p><br>
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

Additional Photos, side by side ipd and stock:<p><IMG SRC="http://www.icstew.com/v70R/exhaust/ipd_and_stock.jpg" BORDER="0"><p><IMG SRC="http://www.icstew.com/v70R/exhaust/ipd_and_stock2.jpg" BORDER="0"><p><IMG SRC="http://www.icstew.com/v70R/exhaust/ipd_and_stock3.jpg" BORDER="0"><p><IMG SRC="http://www.icstew.com/v70R/exhaust/ipd_and_stock4.jpg" BORDER="0">
 

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Re: V70 Dual Exhaust System Demystified (83caddy16v)

Noticed that nice G35 Coupe next to you guys. Even though I'm seeing at least 2 a day around my area, but still like the styling. Only thing left to fix on that car is the tail lights.....<p>Maybe more aggressive front end...<p>Hehehe...sorry to go OT. <IMG NAME="icon" SRC="http://********************/smile/emsmilep.gif" BORDER="0"><p>It's very cool and rare to see 2 R parked next to each other. <IMG NAME="icon" SRC="http://********************/smile/emthup.gif" BORDER="0">
 
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