Technical Anyone Try Thermo Isolating 02 Bungs?

[BOosted 335i]

https://m.facebook.com/VargasTurbo/...1999128053536716,"share_id":0}]}}&__tn__=EH-R

I saw these on facebook,think it's a great idea.but would this be a issue for single turbo guys running top mount VM/ACF kits(Thats what I have)i know these cars can be picky on tuning.just looking for some feedback.

 

[DCook]

A question i have would be, how hard are they to index properly with the flow? Cause you may need all the ugga duggas to get it in the right flow path.

 

[veer90]

I run the Innovate Motorsports heat sink bungs which VTT and Omar shamelessly copied. PN 3729



AFRs are not affected, it will just be a hair slower to respond (on the order of milliseconds nothing that will affect tuning).

They are a pain in the ass to index properly though. I had to spend a lot of time with calipers and a dremel to grind the indexing washer to the proper thickness with trial and error. Would be a million times easier to install if the manifold wasn't already in the car

 

[fmorelli]

Would be a million times easier to install if the manifold wasn't already in the car ...

or if they came with a washer shim kit.

Filippo

 

[veer90]

yep that was one of the suggestions on the amazon reviews actually, a selection of indexing washers

 

[Mikejones1208]

They definitely help, heat sinks for o2's have been around for years wouldnt necessarily say they copied, because innovate was definitely not the first to come up with them, but just as a heads up acf/vm already has heat sinks attached to their manifolds, not sure how it would affect anything doubling up on them, a tuner or someone more knowledgeable on the subject may be able to help with that question. But to answer your question good heat sinks will help o2 life for sure. I run a acf manifold with the built in heat sinks and adv sensors and ive yet to burn up my sensors since i installed the kit

 

[BOosted 335i]

They definitely help, heat sinks for o2's have been around for years wouldnt necessarily say they copied, because innovate was definitely not the first to come up with them, but just as a heads up acf/vm already has heat sinks attached to their manifolds, not sure how it would affect anything doubling up on them, a tuner or someone more knowledgeable on the subject may be able to help with that question. But to answer your question good heat sinks will help o2 life for sure. I run a acf manifold with the built in heat sinks and adv sensors and ive yet to burn up my sensors since i installed the kit

Yeah I know the manifold comes with heat sinks,but do like the idea where the 02 doesn't sit in direct contact with flow which I would think help the like.

 

[Mikejones1208]

As they sit now with the current heat sinks on the manifold they dont come in contact directly with the exhaust flow, so pulling it even further may give you more undesired results, but again i dont know exactly what could happen

 

[BOosted 335i]

As for indexing, I contacted Vtto through messaging on Fb and they didn't mention about indexing.Vtto said its adjustable.Maybe Chris or Tony can chime in to clear this up

 

[BOosted 335i]

As they sit now with the current heat sinks on the manifold they dont come in contact directly with the exhaust flow, so pulling it even further may give you more undesired results, but again i dont know exactly what could happen

Ah your right lol,how I didn't know that.

 

[veer90]

The difference between heat sink bungs and the heat sinks that come on the manifolds already is the internal machining. There's venturi passages that stick down into the exhaust flow, direct the gas up to the sensor which is mounted physically some distance away from the piping, then back down through a pressure differential between the 2 holes. That's why they have to be clocked correctly (entry facing into exhaust flow).

Manifold bungs have fins for heat dissipation but still places the sensor tip in direct exhaust flow.

 

[Chris@VargasTurboTech]

As for indexing, I contacted Vtto through messaging on Fb and they didn't mention about indexing.Vtto said its adjustable.Maybe Chris or Tony can chime in to clear this up

Directly from the site. We (possibly wrongly) assume people read when ordering something.

 

[fmorelli]

Directly from the site. We (possibly wrongly) assume people read when ordering something.

You know what they say about assumptions

Filippo

 

[BOosted 335i]

Directly from the site. We (possibly wrongly) assume people read when ordering something.

View attachment 22494

Thanks for clearing it up.I saw these on Facebook 1st so I sent a PM from there to you or whoever was messaging me back

 

[Rcboosted2007]

I run the Innovate Motorsports heat sink bungs which VTT and Omar shamelessly copied. PN 3729

View attachment 22485

AFRs are not affected, it will just be a hair slower to respond (on the order of milliseconds nothing that will affect tuning).

They are a pain in the ass to index properly though. I had to spend a lot of time with calipers and a dremel to grind the indexing washer to the proper thickness with trial and error. Would be a million times easier to install if the manifold wasn't already in the car

No shame in business

 

[noorj]

anyone get lambda sensor slow response codes with these?

 

[Rcboosted2007]

I have thrown that code, without the bungs.

 

[tsaulsbu]

They are a pain in the ass to index properly though. I had to spend a lot of time with calipers and a dremel to grind the indexing washer to the proper thickness with trial and error. Would be a million times easier to install if the manifold wasn't already in the car

I tried grinding down the supplied washers. Spent about 45 minutes grinding/trying/grinding, only to tear through the washer. I then bought a pack of these, and a single washer resulted in perfectly-clocked Innovate heat sinks w/o modification on my DOCRace manifold.