Subaru/Prodrive Exhaust... Proper leak tests

[Jazzy Jefferson]

Hi

I have a small issue with emissions.

I am led to believe there may be an air leak in the exhaust. It's the only thing I can think of left to check/change.

Can anyone recommend a garage who can actually test this. So far, the best I have managed is "It's just a loud car innit mate." Not a surprise with the prodrive exhaust. But sadly, not enough for me to think they actually checked properly.

I suspect we are looking for a pinhead sized hole, so looking at it, may not yield any results.

Any advice is appreciated. thanks

[Jazzy Jefferson]

348jeff said:

Make up a mixture of soapy water using washing up liquid then just smear over the suspect area. If there's a leak no matter how small it will blow a bubble(s).

NB Same technique is used to find slow punctures/badly sealed rims on tyres, failed seals in split rim wheels, boost leaks in in pipework etc :-)

So simple. I'll give it a go. cheers mate

[Jazzy Jefferson]

226bhp said:

Take it to this chap:

http://www.youtube.com/watch?v=edUpYreyMMQ

I lol'ed

[Jazzy Jefferson]

Athlon said:

If your tailpipe is on the silly large side then part of the problem can be scavanged air pulling back into the pipe and being picked up by the probe assuming the lambda reading is off. a way to test if this is the problem is to choke the tailpipe with a rag or something and see if the reading drops into range,if it doeas you need to find somewhere with a long probe...

It's large but not that large. 2.5'' diameter i think. We did try your suggestion, but sadly to no avail.

Thanks everyone for the help so far. I'll keep you posted...

Edited by Jazzy Jefferson on Thursday 6th November 13:59