Bolt mod

[Jorgez28]

Hello everyone I have a question. Is there a how to for the bolt mod on the butterfly valve

 

[gat0r]

you already disable AFM?


http://sandyblogs.com/techlink/?p=3296

http://www.tahoeyukonforum.com/threads/the-1-00-cat-back-mod.65748/#post-825530

 

[Jorgez28]

Thank you I figure I can drive in M mode and see if it’s worth it.

 

[Eskamo23]

Did you try it out? If so how do you like it?

 

[Jorgez28]

NO I did not I haven’t had much time hopefully around the holidays.

 

[Eskamo23]

My valve was round. Here’s what I did.

 

[Jorgez28]

Eskamo what year is your Tahoe

 

[Eskamo23]

Eskamo what year is your Tahoe

2017 lt 2 wd, i bought it in sept

 

[BigBlueLB756]

Twist the valve clock-wise and then clamp it. That makes sure the flapper is in line with the exhaust flow, rather than blocking it.

Clock-wise twist:

Counter clock-wise twist:

 

[Mark Sartain]

Thanks for posting pics. Does it sound better? I thought it was always open when the engine is running.

 

[LT1ZOB]

I have a 16 Tahoe 5.3. Does this apply to me? If so, is the the same concept as pulling the fuse on NPP equipped Camaros and Vettes? The valve stays open all the time?

 

[dbbd1]

I have a 16 Tahoe 5.3. Does this apply to me? If so, is the the same concept as pulling the fuse on NPP equipped Camaros and Vettes? The valve stays open all the time?

No, our valve is strictly mechanical.

Yes, you have one.

 

[LT1ZOB]

No, our valve is strictly mechanical.

Yes, you have one.

No CEL or any other issues right?

 

[dbbd1]

No CEL or any other issues right?

No, bus system is as quiet as a church mouse...

 

[LT1ZOB]

Hmmmm. Came home from work, manually opened the valve, slid on the 2” automotive hose clamp and tightened it down

Not to be a *****, but 0 difference in sound. Just curious did anyone’s car get noticeably louder or a deeper tone?

 

[DWSmoot]

Yes, although minor! First I climbed under and checked the rotation both ways with the engine running prior to clamping and made sure.

 

[DWSmoot]

Yes! First I climbed under and checked the rotation both ways with the engine running prior to clamping and made sure.

Ran it this way for a while and eventually just cut it out and welded a piece back in.