Review: SuperSprint Twin tube (2x 2.5") Section 2

[Tbonem3]

I have them laying around in the garage. I'll double check but I did notice it tapers right after where it connects to the headers. I gotta find some calipers tho dammit

Of course it does, that's 2.625" going down to 2.5" to accommodate for your 2.5" v1 headers after the slip fit/clamp.

[Tbonem3]

Both part numbers are the same pipes. You guys are believing a description over common sense look at the pics.

Here's 044912 again, show me where you think it tapers down:

[Sharocks]

I have them laying around in the garage. I'll double check but I did notice it tapers right after where it connects to the headers. I gotta find some calipers tho dammit

[DiscoWagon]

You guys are referring to 2 different Supersprint part numbers, check post #36.

[Tbonem3]

Please point to the step down

[nervous24]

Somewhere, something got lost. The ss v1 sect 1 (catted or not) does not step down AT ALL. It will mate to 60mm stock sec 2 or other sect 2s.

The new ss sect 2 2.5 DOES neck down to 60mm to mate with all sect 3s.

I don't care what ECS says.

You aren't wrong, but you aren't entirely correct in this case either.

The link that was posted is for a section 1 that is a slip fit for V1 Stepped and DOES neck down to 60mm. That part number is 044912 and the full 63.5mm is 044012.

That part won't show up on the SS website under our car but you can find it listed under the Z4M here.

[Tbonem3]

Somewhere, something got lost. The ss v1 sect 1 (catted or not) does not step down AT ALL. It will mate to 60mm stock sec 2 or other sect 2s.

The new ss sect 2 2.5 DOES neck down to 60mm to mate with all sect 3s.

I don't care what ECS says.

[DiscoWagon]

Pretty sure that actually necks down to 60mm whereas part 044012 is the full 63.5.

This is correct, 044912 tapers down to 60mm. ECS considers 044012 as a decat pipe which they are not allowed to sell.

However, Turner can sell this part which does not taper: https://www.turnermotorsport.com/p-3...straight-pipe/

[Obioban]

At least the catted version does not neck down.

[nervous24]

Per ECS, it states "Supersprint Stepped Section 1 Straight Pipe - 63.5mm to 60mm". Does this mean it tapers down or does it mean it can bolt up to a 60mm section 2 but its really 63.5mm all the way through.

Pretty sure that actually necks down to 60mm whereas part 044012 is the full 63.5.

[pawa_k2001]

Not sure why you guys think SS v1 sect 1 (catted or not) isn't full 2.5".

Catted V1 S pipes and non catted pipes are exact same; one has cats welded in, one doesn't. That's the only difference - the decat even comes with bungs, literally the same pipes. Just because it mates to a 60mm sect 2 doesn't mean it ends as 60mm. The triangle flanges allow a small range of diameters to mate together.

If you didn't know, the header to sect 1 flanges also allow a range of diameters to mate. You can install the 2.5" manzo sect 1 to 2.16" stock headers. Going from 2.5 to 2.37" is nothing.

Even if the SS v1 pipes did taper down to 60mm (2.37") for a few inches, you wouldn't see that on a dyno.

Per ECS, it states "Supersprint Stepped Section 1 Straight Pipe - 63.5mm to 60mm". Does this mean it tapers down or does it mean it can bolt up to a 60mm section 2 but its really 63.5mm all the way through.

https://www.ecstuning.com/b-supersprint-parts/supersprint-stepped-section-1-straight-pipe/044912~ssp/

[Tbonem3]

Ya I made that mistake early on. When we talk about piping diameter, we're talking OD. So stock pipes are like 2.16-2.36 from headers to sect 2/3. most aftermarket pipes are 2.36", then there's the 2.5".

I'm not mentioning the single 3"-3.5" stuff either.

Pipe wall is 1/16". Double that (1/8") and that's why pipes are 2.5" OD/ 2.36" ID or 2.36"OD & 2.25" ID.

[SUPREM3]

Is the Manzo a true 2.5” or a 2.36” with an OD of 2.5”?

[Tbonem3]

Not sure why you guys think SS v1 sect 1 (catted or not) isn't full 2.5".

Catted V1 S pipes and non catted pipes are exact same; one has cats welded in, one doesn't. That's the only difference - the decat even comes with bungs, literally the same pipes. Just because it mates to a 60mm sect 2 doesn't mean it ends as 60mm. The triangle flanges allow a small range of diameters to mate together.

If you didn't know, the header to sect 1 flanges also allow a range of diameters to mate. You can install the 2.5" manzo sect 1 to 2.16" stock headers. Going from 2.5 to 2.37" is nothing.

Even if the SS v1 pipes did taper down to 60mm (2.37") for a few inches, you wouldn't see that on a dyno.

[Sharocks]

One more question for the 63.5mm section 2 guys. I am specing out the SS exhaust on ECS, the SSV1s are offered as 63.5mm, section 2 is 63.5mm but catless section 1 is only offered as 63.5mm-60mm(it goes from 63.5mm to 60mm). Is there a part number for catless 63.5mm section 1 that doesn't narrow down?

They don't make a set of Sec 1 pipes that are 2.5" all the way through. I'm in the same boat and I might have a Ti Sec 1 with resonators made in 2.5".