Finally....

[mkPOTO]

Saw this on Evolve Automotive's Facebook. Looks like they finally came up with a set!

[Evolve Automotive]

Originally Posted by mkPOTO

Saw this on Evolve Automotive's Facebook. Looks like they finally came up with a set!

We will have dyno numbers and pricing shortly!

[flipm3]

Nice to see Evolve Automotive offering their own! About time these pipes came out, haha.

Which reminds me, I should really dust off this Evolve XPipe and install it sometime soon...

[VCMpower]

[IMG]

Nice

[Detroit M3]

sweet

[///M Power-Belgium]

The clamps in the pic. are very small !

[flipm3]

Originally Posted by ///M Power-Belgium

The clamps in the pic. are very small !

They are indeed shorter than some of the other brands out there. I was looking at the pic and realize that Evolve Automotive seemed to have designed the test pipe to be a "slip-on" style fitment. My assumption is these will slip on over the OE XPipe and those thin clamps are used to crimp or tighten the two together for a secure lock.

On my E46 M3, I have a similar type of slip-on flange between the headers and the section 1 (mid-pipe) and it has proven to be rather reliable. No exhaust leaks, no rattles, no worry about failing gaskets or misalignment. My E46 is driven all year round too in the salty and damp winters.

Anyone at Evolve Automotive, feel free to correct me if my assumptions are incorrect.

[Imran@Evolve]

Originally Posted by flipm3

They are indeed shorter than some of the other brands out there. I was looking at the pic and realize that Evolve Automotive seemed to have designed the test pipe to be a "slip-on" style fitment. My assumption is these will slip on over the OE XPipe and those thin clamps are used to crimp or tighten the two together for a secure lock.

On my E46 M3, I have a similar type of slip-on flange between the headers and the section 1 (mid-pipe) and it has proven to be rather reliable. No exhaust leaks, no rattles, no worry about failing gaskets or misalignment. My E46 is driven all year round too in the salty and damp winters.

Anyone at Evolve Automotive, feel free to correct me if my assumptions are incorrect.

Hi FlipM3

You are absolutely correct. The primary delete pipes are designed to slip over the X Pipe and the clamps crimp over. This allows for more margin for error when cutting the stock X Pipe down to fit them.

[rli2bcz]

Does this cause a check engine light?

[mkPOTO]

Originally Posted by rli2bcz

Does this cause a check engine light?

it will because you are removing the primary cats.

[Imran@Evolve]

Originally Posted by rli2bcz

Does this cause a check engine light?

Yes it will but that can be taken care of with our Stage 2 tune that we will be having an offer on very soon in conjunction with the Primary Decat Pipes.

[aussiem3]

Good news ... like to see the pricing compared to the Turner version. Hope this will be made available through Evolve in Australia.

[SYZ]

Originally Posted by Imran@Evolve

Hi FlipM3

You are absolutely correct. The primary delete pipes are designed to slip over the X Pipe and the clamps crimp over. This allows for more margin for error when cutting the stock X Pipe down to fit them.

Best design IMO. I was baffled why no one else offered it.

[scalbert]

Originally Posted by Alex@evolve

We will have dyno numbers and pricing shortly!

Shortly, as in a week or month? What I would like to know is the expected availability.

[saeedg48]

Originally Posted by rli2bcz

Does this cause a check engine light?

After a few hundred miles it will. If the CEL light doesn't bother you then you'll be fine, the car won't be pulling timing.

[Sales@Evolve]

Originally Posted by scalbert

Shortly, as in a week or month? What I would like to know is the expected availability.

This product has been a little prematurely released on here. Will make an official post very soon with the graphs, pictures and pricing.
They are actually in stock sitting here!

[scalbert]

Originally Posted by Sal@Evolve

This product has been a little prematurely released on here. Will make an official post very soon with the graphs, pictures and pricing.
They are actually in stock sitting here!

Great and thanks. It is nice to see inventory available prior to release. The slip fit with clamps are what all should have been.

Now just get the pricing and ordering available. I could care less about dyno's on this item as we already know what to expect.

[Sales@Evolve]

On a part in this location without any support it is absolutely essential to have a slip on design as the join is very strong. This method also gives people the option to weld them on correctly and have a smooth inner section.

This method also allows for people to weld the test pipes without having any weld marks on the inner pipe work.

The slip on method also allows for a leak free setup which is VERY VERY important given the oxygen sensors are in that area!

We posted on a test pipe thread long ago and mentioned that if it is to be done, it has to be done properly.

[s65e90]

Originally Posted by Sal@Evolve

On a part in this location without any support it is absolutely essential to have a slip on design as the join is very strong. This method also gives people the option to weld them on correctly and have a smooth inner section.

This method also allows for people to weld the test pipes without having any weld marks on the inner pipe work.

The slip on method also allows for a leak free setup which is VERY VERY important given the oxygen sensors are in that area!

We posted on a test pipe thread long ago and mentioned that if it is to be done, it has to be done properly.

yeah the slip on connection is a much better design and ease of a leak free seal IMO; but when you mention welding them on w/ a smooth innner section the primaries should really slip into the x pipe (even though that's not feasible w/ a stock pipe I know) as the flow would go ---___ rather than ___--- .. not much of a big deal but worth noting (especially if we're being technical). think of a drain flage setup

[Sales@Evolve]

Originally Posted by s65e90

yeah the slip on connection is a much better design and ease of a leak free seal IMO; but when you mention welding them on w/ a smooth innner section the primaries should really slip into the x pipe (even though that's not feasible w/ a stock pipe I know) as the flow would go ---___ rather than ___--- .. not much of a big deal but worth noting (especially if we're being technical). think of a drain flage setup

When the pipe flares out to go over the OEM X Pipe, it butts up against the cut edge of the X-pipe So the gas flow does not come into contact with the edge of the x-pipe.
The first part of the flaring forms a curve so when combined with the cut edge of the x-pipe it forms a smooth inner surface. So essentially, the cut face of the OEM X-pipe site inside that curve.

I will attempt to take some images of this but it might prove a bit difficult. Or I can make a diagram.

This detail is actually very very important. Any kind of air/gas flow does not like to see a harsh edge as the air disperses as it passes over this area.

Now, as far as welding goes. You slip them over and for a permanent solution you weld on the outer side of the test pipe directly to the outer part of the OEM X Pipe. You can also fill in the slits with weld. This is just a point which allows everyone to make this permanent and extremely solid if they never want to return back to stock... and you would be surprised how many cars we see here in the UK with welded in test pipes even though they are done not so nicely!

Anyway, very happy that people have picked up on these small details. These details are important to is no matter how simple they may seem.

As also mentioned before by Imran, gives much more margin for error when cutting the OEM X-pipe.

[scalbert]

So... they just arrived stateside in time for the celebration of declaring independence from Great Britain?