B5 S4 Remap Issues

[S4SIMON]

Had my S4 remapped last week, and as promised the car had a lot more oomph to it - particularly a noticeably bigger 'kick' once the turbos had spooled up. The engine checks showed up the exhaust gas temp sensor needed replacing but I didn't have time to wait for a replacement and he wanted £200+VAT anyway - I wanted to get my local specialist to do it as I know his price will be right. He said this wouldn't affect the remap. For about a week it was great but halfway through a 100mile drive yesterday it seemed to lose its edge and feels almost like it's reverted to factory settings. Could this be anything to do with the sensor? No warning lights, engine accelerates nice & smooth as ever - just a bit mystified. Any thoughts anyone?

 

[Blue_Thunder]

If the EGT sensor is faulty then the engine will trim back either the boost or the fuelling to compensate for the faulty EGT readings.

Once you get the sensor sorted, you should be fine.

Where did you go for your remap?

 

[S4SIMON]

Cheers for that, I'll ty and get it sorted this week.
Remap was by Redline in Basildon, through Angel Tuning. A mate of mine had his TT done through Angel and recommended it.
I should add that the guy that the did the remap did say I should get the EGT sorted as it can affect the engine's performance - he simply said he could go ahead with the remap before it was fixed - no dodgy dealings suggested.

Sounds like this is going to sort the problem, so in a week I should be grinning again

 

[duane]

New EGT Sensor = Big Grin for you. Good luck with it.

 

[EssVier]

How hard/easy is the EGT to replace?

 

[SonicDeathmonkey]

I think that the exhaust needs t be cold, so it may ned leaving over night

 

[Blue_Thunder]

How hard/easy is the EGT to replace?

Depends which one it is. I've heard it's much harder to get the EGT done on one bank than it is the other.

 

[stapo69]

Bank 1, drivers side is easy enough, you can see it from the engine bay, just back from the lambda probe. Bank 2 however, passenger side is a bit more of a mission, you can only get to it from under the car with planty of extensions, we ground chunks out of an old spanner to tighten up the new sensor as there's a load of stuff in the way.
This may help ya: http://www.audiworld.com/tech/eng73.shtml