another ? about egt

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09-07-2004, 04:38 PM

silvrbulit04

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another ? about egt

hey all ive been reading post for about two hours now here and on nabisco, this weekend i will be installing a helix full tbe with up pipe and catted dp. also will be marrying my cobb. stage 2. im not two familiar with the up pipe, is there a sensor in the stock up pipe,and is it the factory egt. ive read that you do not want to put a aftermarket egt there becuase it will burn up and end up in your turbo. should the stock egt (if thats what is in there ) be put there in the up pipe will the stock egt burn up? do i need the aftermarket egt for a cobb stage 2 with full tbe and up pipe. any advise would be helpfull thanks silvrbulit04

09-08-2004, 10:43 AM

mmboost

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No, you do not want an EGT probe there. Yes, it breaking up and killing your turbine is a possibility, but not likely. The reason you don't want it there is because its too cold a spot to get useful readings. I have my EGT probe on the header plenum only about an inch from the exhaust port on the head... and yes, if it was destroyed it would chew up the turbine. The chances of that happening are far less than the chances of wrecking your engine from running high EGTs. Don't bother installing an EGT gauge if you don't put the probe in a useful place. Anywhere near the turbo, before or after, is too cold to be useful.

jason

09-08-2004, 12:18 PM

Br1t1shguy

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Quote:

Originally Posted by mmboost

It depends actually. While you're right about the uppipe not being a totally ideal location do to our rather long header primaries, it does have the advantage of A: giving you the "whole picture" and B: letting you know what the turbos enduring. With non-balanced fuel rails especially on our cars, one cylinder may not reflect the others, this is why on turbo cars people typically try to play EGT probes in collectors etc to ensure that they're getting a reading from across the board, as well as being able to see what actual turbine inlet temperature is.