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Old 07-11-2005, 03:55 PM   #1
GeorgeRex
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Default Mad Dad Metal V2 Downpipe

I bought a Mad Dad Metal V2 downpipe from Daddy's SCP recently. At first blush this is a nice looking piece - the external welds appear to be high quality, the flanges are substantial and the materials are high quality. The fact that the pipe is two piece is appealing to me because it allowed shipping in a smaller box (I am at an APO location) and it leaves room on the table for 3CE pipe changes. I paid $570+ for this pipe.



The product was shipped within a couple of days of my order and the item was reasonably well packed.

Installation was straight forward with the exception of having to trim the wastegate separator for my VF-39. Since this is a known problem with this downpipe and the STi turbo, I am surprised the vendor has not posted a tutorial with pictures. I was not even sure how to trim the separator until I mock fitted the downpipe and then had to remove it a couple of times which spoiled an otherwise satisfying DIY project. The external fit was excellent and it mated to my JIC505S exhaust perfectly. By the way, if you can swing it, buy a good pair of tin snips for trimming the heatshield. I was able to trim mine so accurately that I only lost three mounting screw locations and it is very rigid (no rattles !).


The final and most significant issue is that I found the pipe to flange junctions to be poorly fabricated and if I had not spent an hour or so grinding on them, it would have cost me some flow. On the 3CE pipe, the 2.5" to 3" transition was so dimensionally wrong that there was a 1/8 " lip facing into the exiting gas flow. On the divorced wastegate junction the wastegate pipe was cocked and protruding above the surface of the downpipe to turbo flange. Not what I would expect for the money.

At the same time that I installed this, I switched Cobb AP maps to Stage 2. Acceleration is perceptibly better and the motor is noticeably more responsive in revving and has a refined sound. Sorry I don't have any hard numbers but I don't think anyone would be disappointed with the improvements from this downpipe.



In summary, I recommend this piece but buyers should be aware of the issues I raised.
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Last edited by GeorgeRex; 10-21-2005 at 05:22 PM. Reason: clarification from vendor
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Old 07-14-2005, 12:57 PM   #2
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Here's my pipe before I did a little grinding. It wasn't bad at all, specially compared to other downpipes I've seen. If the diverter flange wasn't there, I would of did a little welding and resurfaced the mounting flange. Did you send a pic to Daddy's?

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Old 07-14-2005, 02:05 PM   #3
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Great write up & thanks for all the info.

I had almost bought this dp but couldn't justify the price.

I bought the Helix dp with high flow cat & mated it up to my Greddy EVO2.Great sound & the wife loves it.

joe r
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Old 07-14-2005, 02:07 PM   #4
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WRX03,

Your pipe looks better, I think I had a rough example. I didn't send a pic to Dadddys. I am overseas so returning the pipe would be a real hassle which is one more reason I was willing to pay more initially in the hope that quality control would be in effect. Maybe this review will point the way to some improvements in manufacturing tolerances and oversight on what is otherwise a decent piece. I continue to enjoy the fabulous sounds it makes in conjunction with my JIC titanium catback.
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Old 07-14-2005, 02:18 PM   #5
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Quote:
Originally Posted by GeorgeRex
WRX03,

Your pipe looks better, I think I had a rough example. I didn't send a pic to Dadddys. I am overseas so returning the pipe would be a real hassle which is one more reason I was willing to pay more initially in the hope that quality control would be in effect. Maybe this review will point the way to some improvements in manufacturing tolerances and oversight on what is otherwise a decent piece. I continue to enjoy the fabulous sounds it makes in conjunction with my JIC titanium catback.

If you haven't done anything about it and want too. You can use a pipe expander and then grind it. It may sound bad but you can heat the tubing and tap it down flusher to the mounting flange, then grind. Bottom line it's not a great fitment in the flange due to the divorse pipe being welded in more of angle to clear around the cat. The earlier downpipes the divorse pipe is straighter of a 90 degree angle.
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Old 07-14-2005, 03:47 PM   #6
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Quote:
Originally Posted by WRX03
If you haven't done anything about it and want too. You can use a pipe expander and then grind it. It may sound bad but you can heat the tubing and tap it down flusher to the mounting flange, then grind. Bottom line it's not a great fitment in the flange due to the divorse pipe being welded in more of angle to clear around the cat. The earlier downpipes the divorse pipe is straighter of a 90 degree angle.
I used a grinding bit on a die grinder to blend the edges at about a 45 degree angle but the real work was in the 3CE pipe where the junction was very bad. That killed a few bits ! Thanks for the tip on the expander.
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Old 07-14-2005, 03:49 PM   #7
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Quote:
Originally Posted by joe r
Great write up & thanks for all the info.

I had almost bought this dp but couldn't justify the price.

I bought the Helix dp with high flow cat & mated it up to my Greddy EVO2.Great sound & the wife loves it.

joe r
Congrats on your choice. It was a bit of a bear trying to choose between all the downpipes on the market. My first was a Helix catted but it wouldn't fit in a box that could be mailed to my location.
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Old 08-20-2005, 07:16 PM   #8
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Great write ups....was looking to get this DP, but for the cost....may not be worth it. It's so hard to choose a DP when there are SO many made for the WRX. I hear good stuff about COBB.

Thanx,

Ben
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Old 10-04-2005, 02:52 PM   #9
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I recently installed my MadDad DP/3CE combo to an Apex-i N1 catback, and WOW!!! My first powermod made a perceptible difference. Picks up earlier(slightly less lag), stronger throughout, and pulls harder on the top end. Installation took less than 2 hours with no trimming(straight bolt in affair). I used the Cusco heatshield instead of trimming the stock piece, and I couldn't be happier or more impressed. Great product for the money.
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Old 10-18-2005, 12:43 AM   #10
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WOO HOO I just ordered mine.
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Old 10-18-2005, 11:16 AM   #11
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Quote:
Originally Posted by STImachine
I recently installed my MadDad DP/3CE combo to an Apex-i N1 catback, and WOW!!! My first powermod made a perceptible difference. Picks up earlier(slightly less lag), stronger throughout, and pulls harder on the top end. Installation took less than 2 hours with no trimming(straight bolt in affair). I used the Cusco heatshield instead of trimming the stock piece, and I couldn't be happier or more impressed. Great product for the money.
Suspiciously giddy or easily pleased?
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Old 10-18-2005, 12:11 PM   #12
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Both.
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Old 10-18-2005, 01:35 PM   #13
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Quote:
Originally Posted by STImachine
Both.
It is a nice downpipe and it frees up some horsepower but I still think for the money it could be better finished and the 3CE could be stainless steel.
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Old 10-18-2005, 01:44 PM   #14
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I had none of those problems with mine. Maybe I got lucky.
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Old 10-18-2005, 03:40 PM   #15
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Quote:
Originally Posted by STImachine
I had none of those problems with mine. Maybe I got lucky.
Maybe you got paid...

Are you saying your 3CE pipe is stainless?
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Old 10-18-2005, 07:11 PM   #16
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Just for complete clarity. The MadDad 3CE pipe is T304 stainless, with mild flanges. The heatshield is not stainless because we couldn't source a stainless one. It was difficult to source a heatshield without a catalytic converter. However, in my experience in driving with the 3CE for the past 3 years(early 3CE's used T439 stainless but all recent production is T304) the heatshield has picked up little to no rust. Also, the primary catted DP section is all T304 include T304 flanges.

GeorgeRex - your 3CE should be 304(less the flanges and heatshield of course) as it wasn't all that long ago. If you have reason to believe it is not PM and let me know because if it's not that is a problem. I've also read your previous posts and agree with comment and condition of your 3CE. Had I known early on I would have replaced it for you so sorry for the hastle you went through. We do take customer satisfaction quite serious so any issues customers have(and they are few) we resolve. There are few metal substrate based downpipes on the market mostly due to the high costs associated with them. Our pipe being a two piece makes it even more expensive to manufacture yet priced in line with other one-piece metal substrates, but we like the flexability it offers. We will be introducting a one piece in the not so distant future that will be a better value for those that don't care about the two-piece design.

- Rich
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Old 10-19-2005, 09:39 AM   #17
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And, I didn't get paid. So nyah!!!


Can't a guy just be excited about his first power mod?
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Old 10-19-2005, 02:51 PM   #18
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Quote:
Originally Posted by STImachine
And, I didn't get paid. So nyah!!!


Can't a guy just be excited about his first power mod?
You can and should ! Dont mind my curmudgeonly attempts at spoiling it.
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Old 10-20-2005, 02:36 AM   #19
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any boost creep with this DP?
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Old 10-20-2005, 10:18 AM   #20
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I haven't seen any, and no cel's.
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Old 10-20-2005, 10:55 AM   #21
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No boost creep here either. I have been running their stealthback since March of this year. Smooth power all the way through the band.... and it sounds killer too.
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Old 10-21-2005, 05:29 PM   #22
GeorgeRex
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Update - the source of my concern about the 3CE pipe not being stainless was that it strongly attracted a magnet where the downpipe did not. However, with some miles on the car, I looked underneath and both the downpipe and 3CE pipe have the identical color and appearance now of stainless. I believe that the 3CE pipe is in fact stainless.

Rich,
Thanks for reaching out on this issue. I would give this piece two thumbs way up if we could just be sure that the pipe junctions get finished better and more consistently.
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Old 12-16-2005, 09:46 PM   #23
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Quote:
Originally Posted by GeorgeRex
Update - the source of my concern about the 3CE pipe not being stainless was that it strongly attracted a magnet where the downpipe did not.

Looking around trying to make up my mind on what dp to go with when I came across this. Don't worry about the pipe attracting a magnet, both 439 and 409 stainless will, for all practical purposes, 304 stainless will not.
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Old 03-08-2008, 08:57 AM   #24
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Nice write up. I have now decided which DP I am going with.


.
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Old 03-09-2008, 11:34 PM   #25
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I have the V2 downpipe and the Whisper Dual Tip Exhaust on my STI. Perfect fit and finish. Sweetest tone ever! I love mine!

That downpipe looks downright sexy!!!
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