3rd Cat Delete and Valve Controller Opinion

[kitkat]

Why are some owners having to expand pipes and suffer leak issues?
Are the replacement pipes not machined to match the Emira exhaust pipework at each end?

The replacement pipes are pretty accurate dimensionally, the Emira ones are not, they seem to have a lot of variability.

 

[GRP]

This is a little older thread, but I thought I would let others know.. My friend who did the GRP 3rd Cat delete said he is getting a warning light occasionally that there is an exhaust leak (minor).. He clears the codes and it goes away for a while and then comes back. Make sure to expand the pipe enough so it's really snug..

He said he might take it all apart again and expand it a little more to make it more snug.

Just wanted to give an update
Ryan G

What was the code? Are you sure it wasnt an EVAP leak code? These have been semi common on the Emira's.
A decat can't possibly cause a CEL. It is past all sensors in the exhaust stream (by quite a bit of tubing) There is no chance a o2 sensor could pick up on a exhaust leak back at the three bolt mating flange, the slip connection or the muffler. If the leak is prior to the sensors in the exhaust path sure but that would only be if someone had changed out the manifolds/heades. This is likely a case of coincidence with an evap code which has happened more than once now.

 

[RyanGphoto]

Would you know what code number he saw?

I'll have to ask him next time I remember

 

[RyanGphoto]

What was the code? Are you sure it wasnt an EVAP leak code? These have been semi common on the Emira's.
A decat can't possibly cause a CEL. It is past all sensors in the exhaust stream (by quite a bit of tubing) There is no chance a o2 sensor could pick up on a exhaust leak back at the three bolt mating flange, the slip connection or the muffler. If the leak is prior to the sensors in the exhaust path sure but that would only be if someone had changed out the manifolds/heades. This is likely a case of coincidence with an evap code which has happened more than once now.

Could Def be the evap. I'll have to ask him the code.

Thanks for the info.

 

[UCLAFC]

Anyone deal with a pipe expander breaking while expanding the pipe, doing my cat delete/valve controller, needed to expand the pipe, all was well until I decided to remove the pipe expander to recheck fitment, distal end of pipe expander came out the other end (broke) of the cat delete and it won’t retract to original size, stuck in there pretty good

 

[GRP]

Anyone deal with a pipe expander breaking while expanding the pipe, doing my cat delete/valve controller, needed to expand the pipe, all was well until I decided to remove the pipe expander to recheck fitment, distal end of pipe expander came out the other end (broke) of the cat delete and it won’t retract to original size, stuck in there pretty good

I would suggest shimming the clamp, it works well and is much easier than expanding.

 

[UCLAFC]

I would suggest shimming the clamp, it works well and is much easier than expanding.

Will do! Just go tot get this expander out lol

 

[crestima]

Will do! Just go tot get this expander out lol

This is what I'd try...

Just need a good vise, a torch and a rubber mallet:

1) Tighten the vise on to the handle of the broken expander
2) Heat the outside perimeter of the 3rd Cat pipe with a torch to expand and loosen the metal.
3) Beat on the pipe from inside to outward and as close to its curvature.

Hope this works for you.

 

[UCLAFC]

Update, pipe expander just fell apart after half an hour of messing with it. Placed some high heat wrap within stock clamp and was able to get a tight fit around cat delete, took the whole muffler out to make sure. Exhaust is all back together and now on to valve controller, should just be plug and play, less of a headache.

 

[UCLAFC]

I prob shouldn’t have said anything until job was done. Watching the videos on YouTube for the milltek evm, should just be plug and play but I note the connections don’t match up. It should connect to module physically attached to muffler right? Or is the connection somewhere else?

 

[virtualmacho]

I prob shouldn’t have said anything until job was done. Watching the videos on YouTube for the milltek evm, should just be plug and play but I note the connections don’t match up. It should connect to module physically attached to muffler right? Or is the connection somewhere else?

You have a V2. The V1 connects to the sub-harness near the valve itself, but your V2 should connect to a sub-harness just behind the rear right wheel. You can access it with the diffuser off.

 

[GRP]

^ This.
See the installed pictures on our site for a good reference.

 

[UCLAFC]

Thanks! Sun is setting but will do this first thing in the morning. Sounds great with just the cat delete alone, can’t wait to hear the end result with the evm