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sensor bung/dyno Q's

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Old Nov 4, 2008 | 11:19 AM
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Default sensor bung/dyno Q's

when you had your car tuned did the tuner put a bung/fitting on the top of the cat? the guy i went to wouldn't tune it without the fitting, charged $100.00 to put it on, anyone else do this?
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Old Nov 4, 2008 | 11:20 AM
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Yeah, but not in the cat, just before it.
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Old Nov 4, 2008 | 11:36 AM
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well he put it right in the top of the cat right next to were the gas comes in, BTW I LOVE your avatar!
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Old Nov 4, 2008 | 11:57 AM
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Thanks! It might work there I haven't taken one of these cats apart.
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Old Nov 4, 2008 | 12:44 PM
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That sounds obsurd to make you pay 100 dollars to do that.

How much was the full amount for the tune? Unless it was a dirt cheap before that... I don't see why someone would make you pay 100 dollars to do that.
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Old Nov 4, 2008 | 02:08 PM
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On my stock LS3 manifold there is no room so I asked the same thing and the overwhelming response was weld the bung at the top of the cat. Now, $100 to do that, the tune had better be cheap. Just out of curiosity, where exactly did he weld the bung on top of the cat? Got a picture? Thanks.

Originally Posted by CMY SIX
when you had your car tuned did the tuner put a bung/fitting on the top of the cat? the guy i went to wouldn't tune it without the fitting, charged $100.00 to put it on, anyone else do this?
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Old Nov 5, 2008 | 10:24 AM
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I just looked at the bill, it was $17.99 for the bung and the plug and $85.00 to install it. he put it on the top of the cat right next to where the pipe goes in from the manifold{ I think on the topside where you can reach it from the top} The tune was not cheap! Infact I think they got in my pants, I even brought the soft ware of which their a dealer, their equipment had a glitch and they charged me while they figured it out and the hurried the tune to get me out of there! I have finally settled down enough to write them an e-mail and see if they are going to do anything to make it better! and if they don't I will let you know who they are
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Old Nov 5, 2008 | 02:39 PM
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Yes the bung has to go on top of the cat. There is an air space at the top of the cat before the actual catalyst honey comb starts.

$100 is not totally out of line considering to do it neatly I removed the cat to drill and weld the bung on and then had to put it back on. I assume your tuner did the same. That involves some time/labor. My stainless bung was around $15.

Consider that when I called one of the popular forum header mfg to get a quote on a set of long tubes they wanted $60 extra to weld a bung on them for me before they shipped. The mfg I ended up ordering from welded one on for free. Some mfg are hungry to please customers and some just want to milk you!
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Old Nov 6, 2008 | 09:08 PM
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I don't want to fault a guy for his profit, I was just wondering/ the whole tune experience with this tuner was a nightmare! to say the least, he says it was not his fault but he wants to give me two free hours on the dyno, I'm not sure what I'm going to do?
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Old Nov 6, 2008 | 09:19 PM
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Can't say because I wasn't there, but it does sound like he's trying to make it right and recognizes (now, after your email) that it wasn't a good experience for you. Does that sound correct; I am guessing by what you just wrote?
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Old Nov 7, 2008 | 10:28 PM
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yes
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