Get a catch can before any mods.

[BigBlueLB756]

Here's a shot of the can attached. If you want to remove the can for some reason, a 2" piece of the fuel line easily splices the plastic PCV pipe back together. Use two screw clamps to prevent a vacuum leak.

 

[iamdub]

I just snipped the plastic line from the driver's side valve cover up to the top of the intake plenum in two and put the 3/8" fuel lines on them. The fuel line from the intake side of the catch can goes to the piece connecting to the valve cover and the outlet side of the can connects to the piece running up to the plenum. 3/8" fuel line fits snuggly on the plastic lines, but I still added screw clamps at all four ends.View attachment 226236

I like this idea. Less or no chance of breaking the fragile PCV port on the intake and the 3/8" hose that fits over the stock hard line is probably a good fit for the oversized barbs that come with that cheap catch can from Amazon.

Your pic is confusing me. It looks like the hard line coming from the port on the driver's side valve cover is going to a hose that crosses the manifold- where does it go or is that an illusion?

 

[BigBlueLB756]

Creative re-routing of that hose to get it going in the correct direction to the catch can in the second battery space. You're right; it is confusing. That's it running back under the wire bundle on the left.

Here's the results of a trip we just made from MS up to Indy and back: 1521 miles/22.1 mpg. And caught this crap:

 

[mattjones]

Creative re-routing of that hose to get it going in the correct direction to the catch can in the second battery space. You're right; it is confusing. That's it running back under the wire bundle on the left.

Here's the results of a trip we just made from MS up to Indy and back: 1521 miles/22.1 mpg. And caught this crap:
View attachment 226284

22mpg?! How the hell did you manage that?

 

[BigBlueLB756]

1. I was in the '16 Tahoe.
2. It's Hypertech-tuned. (87 octane)
3. I was keeping up with the traffic flow and probably going too fast. But it felt so good.

I'll try to do better next time, officer.

 

[iamdub]

I was hitting 22.5 and climbing on my way back from Florida, westbound on I-10. Kept cruise set at the speed limit (70). It's along the Gulf coast, so no real hills to speak of. It was also late at night, so no traffic to contend with when passing through the cities and no one to piss off cuz I was cruising 20 MPH slower than what everyone normally does. This was before I disabled AFM. Since then I've lost an average of 1 MPG, but gained so much more life out of my engine which offsets the puny MPG loss many, many times over.

 

[mattjones]

I was hitting 22.5 and climbing on my way back from Florida, westbound on I-10. Kept cruise set at the speed limit (70). It's along the Gulf coast, so no real hills to speak of. It was also late at night, so no traffic to contend with when passing through the cities and no one to piss off cuz I was cruising 20 MPH slower than what everyone normally does. This was before I disabled AFM. Since then I've lost an average of 1 MPG, but gained so much more life out of my engine which offsets the puny MPG loss many, many times over.

I'm happy to get 18+mpg with the cruise control set to 70 but most of my longer drives are through Virginia which isn't exactly extremely flat.

 

[iamdub]

I'm happy to get 18+mpg with the cruise control set to 70 but most of my longer drives are through Virginia which isn't exactly extremely flat.

I'd say you're getting what you should be considering the terrain. Be grateful for your 6-speed, too.

 

[BigBlueLB756]

3.08 rear gear helps, too!
This barn was built to cruise.

 

[Mickey_7106]

Just finished installing mine. The can from catchcan.com is not worth the money! I was highly disappointed when i opened it up and saw how close the dirty and clean ports were from each other. The filter media was also a joke...

Anyways, i modified it a bit with a 1/2 copper pipe and jb weld. BEWARE that copper and steel are incompatible! One or the other will start to rust. This is temporary until i can source some steel pipe. Probably from home depot.

I ended up with extra fuel line. Come smog time ill attach the piece of pcv pipe i cut off back

View attachment 227099