Any idea where my powers gone ?

[stribo]

I wonder if the engine has compensated for the bigger MAF housing you had fitted and is chucking more fuel in, not realising the standard MAF is now back on. Might be worth disconnecting the battery to reset the ECU. My TCV flutters, but has no detrimental effect to performance, at the RR day yours sounded more like the recirc valve.

After the pages of imformation on the M4.4 ECU I`ve been reading I think your d088 inlet pipe was the problem.
Now you are running on a standard MAF the ECU is still fueling for a 3" inlet.
I would disconnect the ECU for 24 hours and then try again.

As above, disconnect the battery for an hour or so and let it relearn from scratch. The boost level is a little higher than I would expect to see for a standard off the shelf Rica map and then it settles to less than what I would expect it to hold. Fueling wise it does seem to be running rich, the most likely cause of the hot and smelly cat, I'd expect to see afr's at no less than 11, a perfect afr level on a well tuned and set up car is 12.5 as this is where the most power is achieved; although you are unlikely to see this on an off the shelf map, from memory my brothers rica on his S70 was sitting at high 11's on the rolling road and I'd have expected yours to be around the same tbh. I can imagine how your feeling about the car but you need to persevere with it as it's a lovely car and you won't find another like it.

I did suggest that yesterday.

[V70 Graham]

I did suggest that yesterday.

You did, thank you, I just thought it would adapt and sort itself out.

[V70 Graham]

Right, battery pulled, will leave it overnight.

Also sourced a Genuine Volvo downpipe/cat from a car being broken, should be with me Thursday, hopefully another thing I can rule out.

[soothingduck]

God this is TENSE

[ExternalError]

Hope you find out the root of the issue and get it sorted it can be a stress having an undiagnosed issue but keep your spirits up and keep at it your car is to nice to just throw in the towel now and get rid.

[V70 Graham]

It does get a bit disheartening when there's a problem that's a pita to diagnose, I'm slowly working through the possibilities in the hope it's found soon.

[soothingduck]

I once rebuilt a 6 cylinder ford cargo in the back alley in the snow because it had work the next day.
Just as I finished (dark by now) the wife told me to come in and get some food and had been for ages.
So I thought I will just turn is over before I go in to eat with the intention of coming out again after.
Anyway just as it fired up the cloth I had been using to wipe my hands shoot up the intake
To say I was mad is putting it mildly.
Anyway 3 hours later I drove it to the yard All AOK

[960kg]

I haven`t gone back and read it all but has anyone suggested the obvious and checked for any Error Codes using a scanner!

[V70 Graham]

I haven`t gone back and read it all but has anyone suggested the obvious and checked for any Error Codes using a scanner!

Not connected the car to VIDA Keith but nothing showing on my code reader.

[merc85]

you did well finding a replacemnt dp/cat

[stribo]

Sorry I couldn't help you out mate, but I may well have your current one off you.

[V70 Graham]

you did well finding a replacemnt dp/cat

I was just very lucky, not gonna count my chickens till it arrives lol

[V70 Graham]

Sorry I couldn't help you out mate, but I may well have your current one off you.

No problem mate, I'm sure we'll sort summat out.

[Kingsford G]

Sorry mate,had no time to follow this as a lot been posted in this thread and sorry to hear its still not sorted.Can you list what`s been done so far to save me going thru all the posts,you never know I might have a bright moment.

[iancho]

Just seen this Graham and I'm truly shocked mate, your car was running so perfectly and sweet last time I was in it.

Really gutted for you as I know how upsetting it is when things aren't going well. I wish I could offer some helpful advice mate as you are obviously climbing the walls at the moment

[tichai]

Hang in there mate. It is still a good car that has decided to have a blonde moment. I can't help thinking you had more air going in than you had going out and that fitting a more free flowing exhaust might have helped to give a better balance?

Then again, I'm a nubcake

[V70 Graham]

Connected the battery up again this morning and went for a nice gentle 20 mile drive so the ECU can 'learn' again, just in case the ECU had not recognised that the original Volvo intake pipe had been put back on and was still pushing more fuel in than was needed. I will go for another gentle drive on Thursday just to be sure.

Also spoke with Tim at Kent Volvo Spares and he has wrapped the downpipe/cat for collection today and I should have it tomorrow.

Hopefully by this time Friday I should have some good news, if not I will be looking at the Rica map as that's the only other thing on the car that has changed since last year.

[oblark]

How long did you have the do88 intake pipe on for ?

It could take a few hundred miles for the ecu to relearn the amount of air going through the maf.

[V70 Graham]

How long did you have the do88 intake pipe on for ?

It could take a few hundred miles for the ecu to relearn the amount of air going through the maf.

Really ?

It's been on since Sept last year, I'm not doubting you Rob but how do you know this ?

[ExternalError]

I thought with a reset it took about 20 miles or so