[acce98]

Originally Posted by TTR

I will map sure, thinking to decat

Could you provide photos of your current exhaust

of course . Tomorrow I post some photos

[acce98]

Originally Posted by acce98

of course . Tomorrow I post some photos

Exhaust

[TTR]

Do you think, problem can in in X-pipe middle resonator? Like it's creates to low backpressure in this area?

[acce98]

Originally Posted by TTR

Do you think, problem can in in X-pipe middle resonator? Like it's creates to low backpressure in this area?

can be possible .. They remove the two OPF + silencer .
I really don't know why in your car you get the yellow light and in my car everything goin well after 1500 KM .

[TTR]

I think problem in the H-pipe resonator! I will try to remove it and reset error, cuz resonator increase back pressure and we need to have it LOW, cuz they measure pressure before OPF filter! will check soon, will do the same exhaust like u did, do you know u use 70mm both tubes or more?

[acce98]

Originally Posted by TTR

I think problem in the H-pipe resonator! I will try to remove it and reset error, cuz resonator increase back pressure and we need to have it LOW, cuz they measure pressure before OPF filter! will check soon, will do the same exhaust like u did, do you know u use 70mm both tubes or more?

H-pipe resonator is the only difference we have . Probably this is the main reason for the pressure. I don't know the tube size, but I guess is 70

[M5 TT]

Originally Posted by acce98

H-pipe resonator is the only difference we have . Probably this is the main reason for the pressure. I don't know the tube size, but I guess is 70

So your car has only 2 x OPF and small silencers removed and no Engine light? Seems an easy mod.


"H" pipe on the other car causing engine light?

[acce98]

Originally Posted by M5 TT

So your car has only 2 x OPF and small silencers removed and no Engine light? Seems an easy mod.


"H" pipe on the other car causing engine light?

I know, Is strange..
From the new exhaust I made more or less 1800 Km and no engine light . In north of Italy the temperature is in the morning is +5 and during the day +13 at the moment .

IF TTR will do the same and no engine light come out we found the better way .

[MrItaly]

I decided not to mod my exhaust for now. Without the opf filter from the factory, my US spec car does make enough sound for the moment. Besides, I'm shipping it back to the States in a month where my acquired Italian driving habits will need to be significantly curbed if I want to keep my license. I'll move back here in 4 years and will maybe mod it then when I can "play" more. I just finished the break in and did the fluid changes allowing me to drive it harder now closer to red line. This thing is strong!

[x3mcomp]

Any sounds clips of the modded exhausts?

[M5 TT]

Originally Posted by acce98

I know, Is strange..
From the new exhaust I made more or less 1800 Km and no engine light . In north of Italy the temperature is in the morning is +5 and during the day +13 at the moment .

IF TTR will do the same and no engine light come out we found the better way .

will watch with interest. intend ripping mine out

[JOHNBMWM5]

Originally Posted by M5 TT

will watch with interest. intend ripping mine out

IF you mean ripping out the P/Filters in the exhaust thats an offense, as in the UK the emissions system will be compromised, good luck with it, hope NO CEL.

[M5 TT]

Originally Posted by JOHNBMWM5

IF you mean ripping out the P/Filters in the exhaust thats an offense, as in the UK the emissions system will be compromised, good luck with it, hope NO CEL.

You need to change your signature

"Live for now, life is too short."

[TTR]

Originally Posted by acce98

H-pipe resonator is the only difference we have . Probably this is the main reason for the pressure. I don't know the tube size, but I guess is 70

Tube is 70mm, mb after resonator is bigger

[TTR]

Originally Posted by x3mcomp

Any sounds clips of the modded exhausts?

I gonna cut resonator tomorrow and will make video

[TTR]

I decide do not to cut resonator, will only remap car to delete opf sendor and also will delete cold start (catalyst heat). Speak with few good speacilist - everybody said, that can't be conntected to the check engine light and u always need remap if u delete OPF, even if the check engine light is off.

[acce98]

Originally Posted by TTR

I decide do not to cut resonator, will only remap car to delete opf sendor and also will delete cold start (catalyst heat). Speak with few good speacilist - everybody said, that can't be conntected to the check engine light and u always need remap if u delete OPF, even if the check engine light is off.

Good to know . Tomorrow I drive my car to a company specialised in ECU remap . I will post some data when ready

[acce98]

Originally Posted by TTR

I decide do not to cut resonator, will only remap car to delete opf sendor and also will delete cold start (catalyst heat). Speak with few good speacilist - everybody said, that can't be conntected to the check engine light and u always need remap if u delete OPF, even if the check engine light is off.

Just connect the car to an ECU diagnostic.
Error on OPF filter but no light on the dashboard , they must change the value in order to solve .
They found also at 2600KM one error on the 6 cylinder. Hard detonation at 80Km/h 4800rpm but no error and recovery problem . We think that when develop the new exhaust they test the car forgetting to connect some cable otherwise the car will stop immediately. No other error after that and the car run perfectly

Sorry for my bad English I hope you will understand.

[TTR]

Originally Posted by acce98

Just connect the car to an ECU diagnostic.
Error on OPF filter but no light on the dashboard , they must change the value in order to solve .
They found also at 2600KM one error on the 6 cylinder. Hard detonation at 80Km/h 4800rpm but no error and recovery problem . We think that when develop the new exhaust they test the car forgetting to connect some cable otherwise the car will stop immediately. No other error after that and the car run perfectly

Sorry for my bad English I hope you will understand.

I cleaned error 3 days ago and also nothing appear. Anyway, it's need a ecu remap to remove opf right.

[TTR]

What do you think about decat? I scare the sound will be too loud

[acce98]

Originally Posted by TTR

What do you think about decat? I scare the sound will be too loud

At the moment after removing the two of filters the car sound very good and this is very loud when you open the valves . On comfort mode is perfect loud enough but not so noisy . We are talking to decat but for my opionion don't make any sense , Is not an M2 or M3/4 , it's a SUV . You can add 1000hp but you can not use them on 2 Tons car . For me now is enough . The occasion for an ECU remap to solve the OPF trouble is good also for adding some more HP , but it's just an excuse . If for the car it was not necessary to remap only for the opf, I would have never remapped it

[x3mcomp]

We need to hear this!