More pops and bangs than normal...is everything OK?

[da_murphster]

Had my (very reasonably priced) APM 12k service about a month ago - no probs found.

I have put about 1000 miles on it since then and its driving very well but the exhaust seems to be popping and banging more than it used to. Upon inspection I can see where fuel has been burning around the end of the cans.

I have CCC's and still have my cats in (I think!! gets 105 db so must still be in).

Do I need to worry? I was considering a custon remap at TVR Power - would this solve the 'problem'?

[dvs_dave]

Your Cats are probably burning through. They all do it. Eventually you'll need to replace them or just get it de-catted.

[anonymous-user]

I always found mine popped more in hot weather. I may have imagined it I suppose but it always seemed that way to me.

[NTEL]

Check out the air temperature sensor. It may be bad or they garage may not have reconnected it.

[da_murphster]

NTEL said:

Check out the air temperature sensor. It may be bad or they garage may not have reconnected it.

How do I do that? The fans are coming on as normal etc - any other things to look for?

[NTEL]

da_murphster said:

NTEL said:

Check out the air temperature sensor. It may be bad or they garage may not have reconnected it.

How do I do that? The fans are coming on as normal etc - any other things to look for?

Nowt to do with the fans, its the one on the air box which gives the ECU the air temperature input for the fueling

[SRZed]

I've had my new baby for about a month and up to now I thought the cacophany of pops and bangs coming from the CCC's was all part of the TVR 'experience'.

Should I now be concerned that this is not normal? I thought it was probably a combination of the cans and fuel mapping specifically to make this noise on overrun?

I have to say I think it sounds great and have mastered excessive 'on request' pops and bangs

[Paul V]

NTEL said:

da_murphster said:

NTEL said:

Check out the air temperature sensor. It may be bad or they garage may not have reconnected it.

How do I do that? The fans are coming on as normal etc - any other things to look for?

Nowt to do with the fans, its the one on the air box which gives the ECU the air temperature input for the fueling

Normally you get a EFI fault code with this though.

You could find its where the maps have been reset, I noticed the other day when I cleared mine it started popping much lower in the rev range.

Has it been doing it since it was serviced? may be worth giving Andy a call and asking him what he thinks, I found him very helpful and friendly when he did my service.

[Basil Brush]

If one can is getting blacker than the other then it could be sign of a lambda on it's way out.