EMAP Sensors - choosing the right sensor

[fivebob]

If it still happens then I'd suggest switching to a synthetic oil like Klotz Techniplate, not the Super Techniplate though as that contains 20% castor oil, and will still produce the varnish.

[sam@tdi]

Interesting stuff, goo contamination makes more sense to me as they certainly don't seem to be effected by the fairly acidic fall out from E85 in a couple of applications I have them in.

It is odd that you've got contaminates as far up as the snubber though, how long is the pipe run from the snubber to the main exhaust?

[Ben-S]

They are about 2ft, maybe 3ft. The weird thing is the snubbers looked perfectly clean they just wouldn't pass air.

[Ben-S]

I added piston snubbers from no-shock and the sensors have been working great since.

[rickytcf]

Hi Guys,
Looks like I have found a group of pros here.
I am still not very clear about exhaust back pressure.

Can someone please explain to me what kind of healthy
back pressure
numbers should I be looking at ?

1) On a NA engine before collector?
2) On a turbo engine before turbo?

Any help is greatly appreciated.

Thanks and best regards
Ricky