Exhaust goes bang!!!

[RobGTI]

I've had this problem for a few months now on my Mk3 Valver. Almost every time I give the car a good blast when I change at about 7k rpm there is a loud bang from the exhaust. When it first happened I thought it was something hitting the underside of the back box, but it happens every time. It does'nt have any effect on performance or reliability but is just odd .

Anyone got any ideas what it is, perphaps somethings on its way out??

p.s.

By the way the exhaust is completely standard and about a year or so old

[Cupra Turbo]

De-Cat it and put a full stainless steel Magnex system on it... Dual Round 3"

[golfvr6]

Er you can't do that, cos you won't get an MOT  
Sounds like an ignition problem, check your timing firstly, then check the condition of ignition system, ie. dizzy cap, leads.

[Cupra Turbo]

Er you can't do that, cos you won't get an MOT  
Sounds like an ignition problem, check your timing firstly, then check the condition of ignition system, ie. dizzy cap, leads.

Stick the Cat back on for MOT's  

[golfvr6]

Yeah fair enough, as long as ya don't get stopped by the old bill in between.
They are quite keen these days on doing road side checks....

[Cupra Turbo]

Yeah fair enough, as long as ya don't get stopped by the old bill in between.
They are quite keen these days on doing road side checks....

I aint been stopped.. but I have a Cat... then again my mate with a De-Cat Golf and a rather loud Powerflow system aint been stopped either...

[golfvr6]

Its up to you, taking the cat off will certainly give good performance gains.
I wouldn't do it personally as there are far too many old bill round here  

[Cupra Turbo]

Its up to you, taking the cat off will certainly give good performance gains.
I wouldn't do it personally as there are far too many old bill round here  

Theres none up here... rural area  

I dont wanna take my cat off tho.. too noisy

[RobGTI]

Cheers - I think checking the timing and the ignition system are a wise move as they may reveal the cause of the problem rather than diguise it with a magnex exhaust. Although I am tempted by an aftermarket system and de-cat but I think I'll have the problem out first.

As for running without a cat I don't think that will be to much of a problem as I have'nt been pulled for about 10 years or so and even then they did'nt check emmissions......cue random spot check tonight!!!

While on the issue I think there is a decreasing liklihood of these checks with more speedcameras replacing patrol cars........there had my say