[Z OH 6]

Originally Posted by SammYyYyY

I know this topic has been beat to death, but from my understanding it solely comes down to whether you want to vent to atmosphere or not. If you are looking to have a road course car under 800 WHP, I've been told the E2X is the better choice as it can be dangerous to vent to atmosphere on a road course car, hence why this is what I'm going with.

However, if you want a 900+ WHP monster that is primarily a straight line car, I've been told using an MM-wild and venting to atmosphere is a better solution.

My engine builder was more familiar with the E2X setup so that's what I picked, but I don't think you can really go wrong with either. MM's support seemed much better from what I could tell.

Mighty Mouse makes a vented and unvented catch can, no reason to use E2X.

[Joshinator99]

Originally Posted by Z OH 6

Mighty Mouse makes a vented and unvented catch can, no reason to use E2X.

100%. The MM Wild *only* vents to atmosphere if you’re experiencing crankcase pressure, which saves your seals from blowing out if you have a tune that is still being “finished” or you experience detonation. E2X is of no help IMO.

[Evansa22]

Originally Posted by SammYyYyY

I know this topic has been beat to death, but from my understanding it solely comes down to whether you want to vent to atmosphere or not. If you are looking to have a road course car under 800 WHP, I've been told the E2X is the better choice as it can be dangerous to vent to atmosphere on a road course car, hence why this is what I'm going with.

However, if you want a 900+ WHP monster that is primarily a straight line car, I've been told using an MM-wild and venting to atmosphere is a better solution.

My engine builder was more familiar with the E2X setup so that's what I picked, but I don't think you can really go wrong with either. MM's support seemed much better from what I could tell.

There is a road course top for the MM mild version which replaces the filter. The guy at MM told me he expects the mild version to be capable up to 900 hp. I assume that was crank HP. I've also added a bigger line going from the factory clean air separator to the intake to aid in excess crank pressure. The road course top adds a line to route under the car in case a bunch of oil blows out but still has the check valve to keep it sealed until a set pressure is reached.

[AZIROC]

For MM...ill just say this. if you are drag racing or daily the car...get the wild. if you do HPDE/AUTOX then get the mild with recirculating top. DONT get the vented top or oil will spray all over your engine bay

[2023_ZL1-AUTO]

Originally Posted by Evansa22

... I've also added a bigger line going from the factory clean air separator to the intake to aid in excess crank pressure...

Katech did the same for mine, larger hoses to the valve covers vents was well.

[Z OH 6]

Originally Posted by Joshinator99

100%. The MM Wild *only* vents to atmosphere if you’re experiencing crankcase pressure, which saves your seals from blowing out if you have a tune that is still being “finished” or you experience detonation. E2X is of no help IMO.

Yep, that's why I like MM, they make a proper catch can for different goals.

[dreksnot]

Originally Posted by AZIROC

For MM...ill just say this. if you are drag racing or daily the car...get the wild. if you do HPDE/AUTOX then get the mild with recirculating top. DONT get the vented top or oil will spray all over your engine bay

Is that will OEM or aftermarket valve covers?

[2023_ZL1-AUTO]

Originally Posted by dreksnot

Is that will OEM or aftermarket valve covers?

Keep in mind, the 6th Gens (Or at least the 2022-2023) ZL1 uses fully baffled valve covers from the factor. I had a MAJOR issue with my E2X CC and oil pooling up BADLY in my blower. The E2X was not not working well with the after market non-baffled valve covers I installed. I switched to MM 1000HP and with the same valve covers the oil issue was all but gone. I then went with fully baffled valve covers, and now I have ZERO issues related to CC and oil.

[JSH]

I only had a mighty mouse wild on mine until I blew out the rear seal. Then I put a breather cap on the oil fill neck

[SammYyYyY]

Originally Posted by Z OH 6

Mighty Mouse makes a vented and unvented catch can, no reason to use E2X.

From what I understand I don't think there's "no reason" to run the E2X. I discussed this with my builder and he mentioned something along the lines of the E2X providing constant suction to the crankcase which helps alleviate pressure. Might not alleviate pressure AS effectively as venting to atmosphere, but is a safer bet for a road-course car, and for the 700 WHP ish level I'm chasing it would be plenty. E2X has also been proven to quantifiably capture more gunk from the PCV system.

Regardless, I acknowledge the merits of the MM design (and if I knew they made more road-course tailored options I would have considered it more heavily). I think it's disingenuous to say there's no reason to pick the E2X though.

The conclusion I drew from trying to pick myself is how terrible both MM's and EE's websites are, and how confusing this is to the lay person like myself. I got so frustrated that I just asked my builder his opinion, and he has had better experiences with the EE can, so that's what I picked.

[RobZL1]

In my opinion, the Elite/Tracy Lewis patented design was much better than the original MM designs for capturing oil. You can see this in the independent testing that is on the internet. I think the newer 2 MM revisions (gen 5 and 6, and maybe gen 4) have significantly or completely closed the gap on the design as far as capturing PCV oil goes. I think both website are confusing, but the MM website is slightly better on choosing what you need and getting a complete package. I had to piece my E2X Ultra setup together based on their website and what I needed. It was confusing at best.

There is data out there that shows the E2X 2nd-port venturi barb actually generates a small amount of vacuum while under boost. I really liked the design of the can and setup. They note it to be rated for 1000 at the crank.

With my new build phase, I am going with a MM Wild for the 1200hp -12AN setup. I saw there is also a new version of the Motion can that has a check valve, much like the MM can. I think that is another player worth considering as a high-hp alternative.

[AZIROC]

Originally Posted by dreksnot

Is that will OEM or aftermarket valve covers?

OEM