hissing noise after remap and egr delete

[boidy]

hi, since I've owned my Audi the only real problems i've had have been EGR valve related.

i replaced my last 1 with a siemens, it lasted 18 months.it still looked brand new but would stick open 1mm when slightly clogged.
this caused my car to smoke under acceleration a lot more than normal.

my mpg hit rock bottom, it was running rich i think.

anyhow, i removed it and cleaned it 3 times in 3 months.

i was left with 2 options, new EGR valve or remap and EGR delete.

i went for the remap and delete. the car runs great, more power, torque, but today with the windows down, i heard a hissing from 1500 rpm uupwards.

my questions are this, if it doesn't use the EGR what route do the gases take ?

do you think the hissing is caused by the gasses being re routed or have i split a pipe ?

if so, which pipe would it be cos it all looks good to me from a quick gander under the bonnet.


thanks in advance,

[Gazwould]

What's the exact delete method you used ?

[boidy]

The software was deleted the egr is now shut, I haven't had sooty tail pipes since
i suspect a split pipe I can hear a loud hissing at 2000 revs upwards
mpg has dropped as well
going to have a look tomorrow
does anyone have a diagram of the piping?
cheers

[MFGF]

If you're lucky it will be a split pipe. Hopefully not a split intercooler (I had this on my BRE engine A6) which is more common than you'd hope.

MF.

[boidy]

Found the problem, intercooler has split and blown the seal out.
by the looks of the old oil it's been going a while.
got 1 ordered from euro car parts £63
then it's time to re assemble the front end
theres a good video on YouTube of how to remove the front bumper, light out and just pop the intercooler off
reckon I've saved myself a few quid by doing it myself.