Thread: Chips

I don't think there is an easy way to fit an EGT gauge to the TDCi either,another reason to avoid cheap performance chips. Pat

Originally Posted by PAT303

I don't think there is an easy way to fit an EGT gauge to the TDCi either,another reason to avoid cheap performance chips. Pat

Madman EMS mount directly into the turbine exhaust (post turbo)...

See here: http://www.landyonlineretail.co.za/w...'showall=1

Scroll down!

Originally Posted by Tombie

Madman EMS mount directly into the turbine exhaust (post turbo)...

See here: EMS Installation Basics

Scroll down!

Tombie,

How much impact does having the probe on the exhaust side of turbo have on temp readings ?

Is it preferable to have it between the head and turbo ?

Cheers

Originally Posted by Drover

Tombie,

How much impact does having the probe on the exhaust side of turbo have on temp readings ?

Is it preferable to have it between the head and turbo ?

Cheers

Turbo acts as a thermal sink, reducing 'true' temperature readings by a significant (~200c?) and varying amount making readings indicative.

Probe pre turbo gives more accurate/reliable readings.

I have a Madman with EGT (pre turbo) and drive to it.

I've read the difference between pre and post turbo readings is about 100 degrees, that is 100 degrees lost for a post turbo, the further down the dump pipe you go the more heat you lose. Also depends on how quick your gauge reacts.
Pre turbo is by far more accurate, but there's nothing wrong with post turbo, just be aware of what the numbers on the gauge equate to in terms of real world engine temp and drive accordingly

Originally Posted by Disco Muppet

I've read the difference between pre and post turbo readings is about 100 degrees, that is 100 degrees lost for a post turbo, the further down the dump pipe you go the more heat you lose. Also depends on how quick your gauge reacts.
Pre turbo is by far more accurate, but there's nothing wrong with post turbo, just be aware of what the numbers on the gauge equate to in terms of real world engine temp and drive accordingly

Yeah, but that's the issue, the loss could be 100 degrees at certain times, or 50, or 200, so you never really know how close to the edge you might be. On that basis you probably need to derate by the worst case value at any time if you want to be sure you're safe.

That said, plenty of people run post turbo gauges, but then again what are the numbers on how many turbos get cooked that way - the data is unavailable.

Either way, it's better than nothing as long as you understand the limitations - however, if you take it as read it has the potential to be worse than not having one.

n p o - did you need to take to turbo off to drill and tap the hole for sensor ?

Is there a safe option with out removing the turbo?

May be a vacuum running while drilling or a magnet ?

Would a few fine metal filling being sent through the turbo have the potential to cause harm ?

Originally Posted by Drover

n p o - did you need to take to turbo off to drill and tap the hole for sensor ?

Is there a safe option with out removing the turbo?

May be a vacuum running while drilling or a magnet ?

Would a few fine metal filling being sent through the turbo have the potential to cause harm ?

Most do it in situ - engine running is a popular option too. I had mine done during a service (needed an odd tap that I didn't have) - can't remember how they did it in the end, but they had successfully done many without issue (for what that's worth).