Okay, let me charm in and warn all the readers about this dp. I bought the Megan downpipe from ebay and expected everything to fit like a dream from all the good inputs from other threads. Turned out the downpipe was not meant to "FIT" the car. You WILL need a LOT of twiks to get this sucker on the car, which I chose not to give myself headaches and went with the n1. The n1 downpipe turned out to fit perfectly with the n1 catback. I tried to save a few bux and went with the Megan, and it turned around and kicked my ass 1 more time. I guess you get what you pay for is right.

Wow...I didn't want to read all of that but it looks like it's a full 3" downpipe. My downpipe started at 2.5" until the flex and then 3" up until the flange that bolts up to the catback where it necks back down to 2.5". That's probably why there is no room for a nut on the o2 housing. Mine fit fine but then again I have a FWD, got mine from ExtremePSI back when they used to make exhaust components.

As for it being too short...speechless.

assa 98gsx said:

Okay, let me charm in and warn all the readers about this dp. I bought the Megan downpipe from ebay and expected everything to fit like a dream from all the good inputs from other threads. Turned out the downpipe was not meant to "FIT" the car. You WILL need a LOT of twiks to get this sucker on the car, which I chose not to give myself headaches and went with the n1. The n1 downpipe turned out to fit perfectly with the n1 catback. I tried to save a few bux and went with the Megan, and it turned around and kicked my ass 1 more time. I guess you get what you pay for is right.

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now i know these are meant to bolt up to a "stock" car, but how do you imagine a 3" pipe is going to fit your stock 2.25" o2 housing? My MR downpipe was 2.6" at the o2 housing and I verified that before I purchased it. Bolted up to the stock and aftermarket o2 housing just fine.

I was told by the seller that the downpipe would bolt on to the stock o2 and the N1 catback system. (I thought it would neck down from 2.5 to 3 just like the n1) Although the downpipe didn't fit, the quality of it is amazing tho. It's a true 3" unlike the N1. It really comes down to what you are after, easy installation or performance.

I got an ebay pipe and assumed since it looked close enough it was the same...

It was better.. It fit at the O2 with room for the nuts... I cut the flange off to slip fit a catback before I even tried anything else...

So Megan no.. Some Ebay's yes..

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assa 98gsx said:

I bought the Megan downpipe from ebay and expected everything to fit like a dream from all the good inputs from other threads. Turned out the downpipe was not meant to "FIT" the car. The n1 downpipe turned out to fit perfectly with the n1 catback.

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I see you have an N1 catback. Are you using the 3" long adapter (neckdown) that comes with the N1? It wouldn't make sense that you are, but the length of the adapter and the length that the pipes are too short seem about the same.

The N1 downpipe is longer because the manufacturer assumes: you have an N1 catback, you are using the 3" adapter as a neckdown and means of "bolting-on", and you will be removing that adapter upon installation of the downpipe for full 3" exhaust. Nice theory, but then your exhaust is 3" too short.

Unless, of course, you purchase the N1 downpipe which is made 3" longer to compensate.
If any of this is correct, then your exhaust is too short, not your downpipe.

One more idea, then I'll shut up. How does the length of the stock downpipe/cat compare to the length of the megan downpipe?

http://www.dsmtuners.com/forums/showthread.php?t=159665&highlight=apexi

Sorry, couldn't help myself.

Has anyone heard if the ebay downpipes work good for 1g awd? I'm thinkin of getting one.

You know what... I still might have a megan... Looing at this its exactly the same..
necked down a tad at the O2 to clear the nuts etc....



Does'nt look like the thread starters pipe and had none of the problems

I ran into the same problem with my Megan DP as far as the fitments to the exhaust. I had bought a new 3" O2 tubular housing since the the Megan was a 3" all the way through with no neck down restrictions.

i only paid $89 for my DP so I was not all that upset about the DP not fitting my 99 GSX stock exhaust. I was already planning on buying a new 3" exhaust so I put my stock DP back on until my new Apexi n1 CAST Back arrived.

The Megan DP still did not fir to he Apexi N1 so I made this 3" coupler to fit the two together.

Overall I was happy with the end results for the price.

That adatper looks nice. But those of you wondering if you can use the old apexi n1 neckdown adapter, the answer is no you can't. It is rotated the wrong direction and even if it did match up, the 2.5 inch section's bolt holes would still not match up at due to the smaller diameter of the bracket. Im just going to cut my flange, take it to a shop and have them put a 3 inch piece of 3 inch piping in there and rotate the flange so that it will fit properly, as for the studs....well, i'm trying to bend them but that's turning out to be a real pain. Brandon [VFRacing]

I posted about this pipe a while back. I had to ...uh....indent...the pipe to get a socket on the bolts. Aftermarket o2 shouldn't be a problem. I also have an apexi n1, i had to cut the downpipe and weld an extension in. Fukin apexi with thier ghey ass stock adapter.
Ive heard it fits fine with some otehr exhausts.

There must be two versions because i did'nt have to... Look at the picture I posted... Notice the taper below the flange.....

Also just get a piece of 3" straight expand as needed and use 3" easy seal band clamps....

I posted in my thread about this DP that there are 2 or 3 Megan downpipes on ebay. On necks down at both ends a good amount. Then the other, the one I ordered, necks down only at the O2 side to 2.75" or so. There might be a third MR DP bc I have heard that some guys have one a full 3" at the O2. My MR DP will be here Tuesday, I guess Ill be taking it to the exhaust shop for some custom fab, seeing as there are some problems fitting it.

UofACATS said:

I see you have an N1 catback. Are you using the 3" long adapter (neckdown) that comes with the N1? It wouldn't make sense that you are, but the length of the adapter and the length that the pipes are too short seem about the same.

The N1 downpipe is longer because the manufacturer assumes: you have an N1 catback, you are using the 3" adapter as a neckdown and means of "bolting-on", and you will be removing that adapter upon installation of the downpipe for full 3" exhaust. Nice theory, but then your exhaust is 3" too short.

Unless, of course, you purchase the N1 downpipe which is made 3" longer to compensate.
If any of this is correct, then your exhaust is too short, not your downpipe.

One more idea, then I'll shut up. How does the length of the stock downpipe/cat compare to the length of the megan downpipe?

Click to expand...

The N1 downpipe is the longest, then stock downpipe then the Megan racing downpipe.
With the N1 downpipe on the car, the extension is taken off the catback. With the stock downpipe on, I used the extention and it was a perfect fit. Now, with the Magan racing downpipe, even with the extension on the catback, it was still too short. I think they made the megan racing downpipe to fit other brand exhausts. You can see from the picture, even with the extension on,it's still a good 2" too short. Mine megan downpipe did not neck down from both ends. True 3" downpipe.

well, if the only way im going to get my MR downpipe to fit on my car is to buy a aftermarket 02 housing, which 02 did you guys buy that mounts up correctly to the MR downpipe. anyone here do that with the stock t-25?

i thought i was going to save $ using this downpipe. little did i know i was going to be locked into buying a new o2 housing and custom catback to make it fit. that was fun!

The downpipe in assa98gsx's pics is a T-Pros downpipe, as the emblem next to the o2 flange says. I figure t-pros is not megan racing. Just to clear that up.

I just got the same downpipe in the mail. Looks really nice but it definitely won't be easy to fit. Wondering if an evo3 o2 housing has a larger stud spacing than the stocker? I'd rather have that than the standard 2.5" tubular ones, cause it might be possible to port it out enough.

I thought the downpipe was some pos megan copycat when i got it. I wrote to the seller and he told me T-pro is a sub-division of megan racing. I have no clue wether the downpipe is a real meganracing or not tho.

It looks like there might be a mixup in downpipes here...is the posters labeled megan racing or t-pros?

Doesn't really matter if it's megan or not per se. It's a different style anyway, might as well call it t-pros. But it's a full 3" which is cool if you're going for performance. It's actually really nice quality from what I can tell.

Note: t-pros makes a fwd version which starts off at 2.5" till the flex, and it's got sharper bends. Why? I always thought downpipes were interchangeable between the models, except for the last flange. I have a 1g fwd, we'll see if I can shoehorn in this full 3" made for 2g awd I'm not worried about mating it to the catback, or hangers, I'm more worried about it fitting under the oil pan etc.

i just put a megan racing downpipe on my 95 GST and it fit beautifully!.....its a 2.5 that goes to 3, but i have absoulutely no complaints looks awesome welds are great, and the fittiment is PERFECT....all in all get MR not T-pros....be careful i guess

It is a Megan Racing Badged Downpipe. not T-pro.

That downpipe says T-Pro Not Megan Racing..

I have sold & installed quite a few of these with no problems..

Other people are passing off cheap shit as Megan Racing stuff...

Megan is high quality stuff.... I know most people that work their also. If there was a problem with fitment on a real Megan downpipe, they would exchange it for a new one....

its because your buying from bullshit Ebay sellers that are selling from their mothers house and dropshipping everything from vendors who dont care about you and just want your money.

Buy from a reputable place and you will not have a problem..

scottsee said:

It is a Megan Racing Badged Downpipe. not T-pro.

Click to expand...

looks like a T-Pro badge on their to me buddy.