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MG MGF Technical - Phoenix Exhaust Advice

Evening All..

Some of you might know about the problems I've had with a Phoenix Exhaust system.. Pretty old exhaust and bracket broke, causing it to rub a hole in the back box. Phoenix have very kindly sent me a replacement, but now after a bit of fitting advice.

Looks as though the back box is for a MKII as they've sent me an additional pipe - MGF link pipe.. Now a couple of questions..

1. In the link pipe, there's a hole in the top. Looks as though it's got a screw thread in there.. About 1.5cm across. Any suggestions what that's there for? No sign of anything to screw in there that came with the link pipe.

2. Do I need some sort of gasket to link the back back up with the link pipe?

Regards,
Jon.
J Gordon

>1. In the link pipe, there's a hole in the top. Looks as though it's got a screw thread in there.. About 1.5cm across. Any suggestions what that's there for? No sign of anything to screw in there that came with the link pipe.

Later F's and now the TF (I think) have a sensor in the exhaust system just after the cat, I'm sure that's what you are seeing. If you have an earlier F then I'd assume you'd need to fit a plug in the hole.
Paul Lathwell

That's sounds about right to me.. I have a MKI, so it looks as though I'm going to have to get on the phone to Phoenix to see whether they can supply the required bung!

Thanks,
Jon

Oh, and if you're wondering a 'back back' is supposed to read 'back box'!
J Gordon

Surprising that the 'link pipe' came with a threaded hole for a lambda; if that link pipe is required, then the car it is destined to fit is unlikely to NEED a post cat lambda...

Oh well, neither here nor there really. You can probably use a bolt in there Jon. Not sure which one off hand? M18 I think? Carl will probably know, as he has made his own lambda sensor equipped cat-replacement pipe that he's used for tuning... see Dieter's web site for more details! :o)
Rob Bell

>Surprising that the 'link pipe' came with a threaded hole for a lambda; if that link pipe is required, then the car it is destined to fit is unlikely to NEED a post cat lambda...

Possibly to allow as many fitment options from one exhaust pattern. Ah, or to perhaps to allow for the use of a cat by-pass to be used, these are normally just straight yes? =-s
Paul Lathwell

Thanks for the suggestions Rob + Paul..
Good news anyway.. Phoenix are sending me the correct link pipe without the extra hole. Great service from them I must add.
Jon

>> Possibly to allow as many fitment options from one exhaust pattern. Ah, or to perhaps to allow for the use of a cat by-pass to be used, these are normally just straight yes? =-s <<

Good thoughts Paul, but no.
If you have a post 2001 MGF and exhust system fitted, then you'll have a cat with a longer post cat pipe with a threaded hole for the lambda. Therefore no need for the link pipe.

If you've got a cat bypass tube fitted, then there isn't much point having a second lambda sensor as all it is going to do is return out of range figures back to the MEMS! You need to fit a MIL inhibitor in place of the Lambda.

The only senario that I can think that this threaded link pipe would be useful would be if you had a post 2001 MG, fitted a pre-2001 catalytic converter and so needed an additional hole for the post cat lambda... Not a terribly large market! LOL

All rather academic though - good news Jon that Phoenix are now sending the correct part through to you :o)
Rob Bell

Jon,

I too have had to contact Phoenix directly in the past and I have to echo you findings concerning their good service, very helpful and effcient at gettings things sorted.


Rob,

Yeah, I did realise about the post 2001 MGF exhaust. It did also occur to me about the sensor after the exhaust, as in surely it's there to ensure the cat is doing it's job. Hell as you say it's not an issue anyway.

BTW, myself and Sue have got the Phoenix systems fitted on the TF's now... very nice... vrooom vrooooooom. =oD
Paul Lathwell

So I take it that you're enjoying the new sound track then Paul! LOL :o) What tailpipe finishers did you opt for?
Rob Bell

Rob, not answering for Paul but I'm certainly enjoying the new soundtrack :o)
I was starting to lose my enjoyment of the TF and had a hankering for an elise but now I'm starting to find excuses to go for a drive again <VBG>.

>What tailpipe finishers did you opt for?

We went for the round straight cut ones, took the advice of Victoria on what suited the TF best.

All in all very happy.

Sue.
Sue

Great to hear Sue! :o)

So... any other Darkside mods planned? ;o)
Rob Bell

>>We went for the round straight cut ones

Those were the ones that made me even think of trading my old Phoenix in for a new one when I saw them at last year's open day at the MGFCentre. Well, to be truthful, those finishers and the sound of the new Phoenix on Scarlet - better even than the old Phoenix.
Dave Livingstone

Sue,

>took the advice of Victoria on what suited the TF best.

Well excuse me - *YOU* may have needed the influence of another woman to come to a decision, but I said all along that the straight round-cut finishers were the ones to go for!


Rob,

>So... any other Darkside mods planned? ;o)

Well I may change the console trim etc. silver items, no doubt Sue will just copy me again. ;-)


Dave,

Personally if you were going to change the finishers go for the round slash-cut ones on the F - suit the shape of the rear bumper better IMO. Would be interesting to see what your current exhaust finishers look like on the TF though.
Paul Lathwell

>>Dave, Personally if you were going to change the finishers go for the round slash-cut ones on the F - suit the shape of the rear bumper better IMO. Would be interesting to see what your current exhaust finishers look like on the TF though.

Actually, I misread Sue's post - it's the slash cut ones that really took my fancy. I realised my mistake once I'd posted, but didn't want to upset Sue by correcting myself ;-)
Dave Livingstone

Dave,

I used to have the slash cut ones on my F and they did look the part and suit the F very well mainly because they kinda follow the line of the bumper. The same can also be said for the straight cut finishers on the TF as it goes. Actually on the TF the larger bore of the Phoenix finishers look quite well proportioned in the bumper. :)
Paul Lathwell

This thread was discussed between 22/03/2004 and 24/03/2004

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