As far as i know the flex its 2.25", so i would say yes it is disrupting the flow

 

the flex pipe is 60mm

Magnaflow is 2.25" which is smaller than 60mm.

 

it should not bother you at all... bigger is not always better, especially if you're running n/a.

 

I am aware that magnaflow is 2.25" but it certainly has increased flow due to the straight-thru design as opposed to the stock exhaust setup. I figured since the stock exhaust is (apparently) 60mm that the flex pipe would be the same. I guess I am correct in assuming this. So, in essence the flex pipe will not be disrupting the flow...

With my current exhaust setup the sizing is apparently going from 2.5" ORP -> 60mm flex pipe -> 2.25" magnaflow

 

Trubendz.com has 2.5" and 3" flex pipes for SVT now.

 

Trubendz.com has 2.5" and 3" flex pipes for SVT now.

Any links? I can't seem to find it on the site.

 

I am not really concerned with getting a larger flex pipe now seeing as the magnaflow exhaust is 2.25" which is smaller than the flex pipe...

That's nice to know that someone offers them though. :thumbup:

 

Well, I *do* need one, because the rest of my exhaust is 2.5", and I don't want to bolt in a 2.25" bottleneck if I don't have to. :lol:

 

Any links? I can't seem to find it on the site.

I actually searched around myself and TruBendz links to another company they own: Mandrel Exhaust Systems. They have 2.5" and 3" flexpipes for the SVT specifically. If you get a flexpipe for a regular Zetec (which are actually easier to bolt and unbolt), then you would need a custom cat install. Here is a 2.5" SVT flex

 

i don't mean to thread jack but i've been curious about sound with a larger flexpipe. i am running ORP with borla catback. will a 2.5 flexpipe increase the loudness of my exhaust?

 

i don't mean to thread jack but i've been curious about sound with a larger flexpipe. i am running ORP with borla catback. will a 2.5 flexpipe increase the loudness of my exhaust?

Not really louder, possibly deeper. Keep in mind its only a 2' section of pipe.

 

i don't mean to thread jack but i've been curious about sound with a larger flexpipe. i am running ORP with borla catback. will a 2.5 flexpipe increase the loudness of my exhaust?

If you don't mind more threadjacking.....

How loud is your car?

Do you have the Zetec Borla with just the muffler or the SVT Borla with the added resonator?

 

Not really louder, possibly deeper. Keep in mind its only a 2' section of pipe.

the ORP is only a 2' section of pipe and it does wonders. hahaha

If you don't mind more threadjacking.....

How loud is your car?

Do you have the Zetec Borla with just the muffler or the SVT Borla with the added resonator?

its got a pretty nice throaty rumble to it but its not quite as loud as i'd like it to be.

i have the SVT Borla with resonator and am possibly thinking about removing the resonator. I used to have a zx3 with Borla and it was louder and better sounding than my SVT and i had the factory cat on my zx3. its kind of frustrating lol

-justin

 

the ORP is only a 2' section of pipe and it does wonders. hahaha

I agree, but your 2' piece of pipe got rid of an obstruction. I'm sure you knew that and were just joking but that might have confused some people out there that aren't "in the know" LOL

 

I agree, but your 2' piece of pipe got rid of an obstruction. I'm sure you knew that and were just joking but that might have confused some people out there that aren't "in the know" LOL

lol yeah i was just joking. sorry guys, replacing your flex pipe doesnt turn your car into a magical speed pony. Though in the process you may find a tiny unicorn in there poking holes in your exhaust pipe and sh*tting in your filters!

 

I was going to suggest, I'd like to pay seven thousandish. I'd love to pay for that. Thank you for not f'ing me big time.

SVTsurfer: the Magnaflow exhaust does not flow better than the stock SVT exhaust. In fact, there hasn't been a single cat-back system that shows improved power over stock. The only part you'll want to replace is the cat-pipe... everything else is just tone.

 

SVTsurfer: the Magnaflow exhaust does not flow better than the stock SVT exhaust. In fact, there hasn't been a single cat-back system that shows improved power over stock. The only part you'll want to replace is the cat-pipe... everything else is just tone.

My understanding is that a certain person that used to build turbo kits, has a shop in NC, and is unmentionable on this board saw significant gains by bolting up a 3" exhaust.............in hp AND tq to an SVT with just bolt-ons. Unfortunately he cannot come on here and validate his findings.

 

My understanding is that a certain person that used to build turbo kits, has a shop in NC, and is unmentionable on this board saw significant gains by bolting up a 3" exhaust.............in hp AND tq to an SVT with just bolt-ons. Unfortunately he cannot come on here and validate his findings.

... which is a common response. The fact is, Tom replaced the ENTIRE exhaust with 3" piping straight off the header. The dyno chart he posted showed the same gains and curves as replacing the cat pipe with an ORP. It is safe to assume that, because he replaced the cat with straight 3" piping, that was the only place where he made gains. The rest of the exhaust had no part in it.

 

i think i saw a thread somewhere showing dyno results of different exhaust systems.. i even saw HKS 1.7" cat-back top the charts. oh well, i think we should open a new thread for this.

 

I'm in the middle of upgrading what I thought was going to be all of my exhaust components from the collector of the header back. After removing all of the exhaust from my car, I got out the dial caliper and took some measurements that are relevant to this topic.

SVTF header collector ID: 2.350"
SVTF Catalytic Converter ID: 2.450"
SVTF Flex pipe ID: 2.425"
SVTF Cat-back ID: 2.170"

I'm glad I waited to take measurements before ordering parts. I will keep the stock flex pipe and header (which will be wrapped in header wrap). I've ordered my FRPP Borla 2.5" Cat-back (for the Duratec engine), and I will replace the cat with ORP or CFM hi-flow (even they ever get any in). At that point, the 2.35 header collector will be my bottleneck. I imagine most other non-turbo SVTF's will have the same bottleneck.

 

I imagine the header collector isn't as much a restriction as it is scavenging gases. The cat is the big restriction directly after it. Anything beyond that is pretty much just routing the gases out of the car, and the stock piping does the job well.

 

Soooooo... It appears that the 2.25" Magnaflow is actually LARGER than the stock exhaust, contrary to popular belief!

Thanks for clearing this up! :thumbup:

 

^^^That would require someone measuring the ID of the Magnaflow, too.