I removed my ALDA a while back when i first got the wagon and it was running poorly, smoking, and all that.

The performance improvement was great and no visible smoke with normal driving in daylight and just a slight haze when flogging it from a standing start so I have continued to drive it without the ALDA.

Today I finally got a project completed to the point where I could do a road test; I have installed a trans temp gauge that I can switch between coolant and trans temp and an exhaust temp gauge.

I did my first test drive today, flat level road, ambient temp low to mid 90s, after several miles of just cruising along at 65-70 mph I stopped and from a standing start just about WOT without holding down the kick down.

Before i reached 70 mph the exhaust temp hit 1000° F.
So I am thinking that some of you that have removed your ALDA and are enjoying the improved performance may be putting your engines at risk, particularly if you live in hilly country and are operating without a pyrometer.

We were warned by a couple of the more experienced members here about this in at least one of the threads about ALDA removal, but I didn't take it too serious, as I am pretty much a gentle driver.

I put the pyrometer on because I am planning to pull a small camper on a 2000 mile trip this fall and I like guages any way.
I have repaired my ALDA so it holds pressure but was enjoying the power, not really thinking much about putting it back on, but I am now going to put it on for sure!
Don

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97 E300D 157000 miles
87 300TD ?141k? miles