Keep adjusting up until your takeoff/0-60 times aren't any faster. Then go back an adjustment (like 1/2 turn or whatever).

If you want to do it in the driveway, bump the accel. linkage after each adjustment. Look for smokey smoke...

Test drive...and then adjust more.

To pmckechnie's point, if you were tweaking the ALDA on a chassis dyno, would you maximize hp at 4000 rpm in third or is there another objective?

Sixto
87 300SDL

That little S.O.Bs tough to get to on a 603.

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Owen

87 300TD 603 I-6
94 Jeep XJ I-6 4.0 (see the pattern)
89 750il
seventy-two hundred feet above sea level (kinda cold up here)

DaveM/gsxr outlined a method of stacking shims between the ALDA and the IP. No need to remove the intake manifold. Otherwise I recommend drilling through the intake manifold and fitting plugs when you're done tweaking the ALDA Seriously, you could probably get away with a screw similar to the tranny drain plug for the bottom and a bolt similar to the IP RIV timing hole plug for the top. Slip a tube into the hole before fitting the lower plug (through the upper hole) so you don't risk losing the plug into the #4 runner. The open question is sucking out the shavings from drilling and tapping the lower hole.

Sixto
87 300SDL

I've been trying to get information on shimming myself, from what I can gather the inner diameter needs to be 14mm. I may go dig through my stuff and see if I can find something to fit mine and try that today, maybe even put the mbc on and 'kick it up a notch'

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1980 500SE/AMG Euro
1981 500SEL Euro
1982 380SEL
1983 300TD
1983 500SEC/AMG Euro
1984 500SEC
1984 300TD Euro
1986 190E 2.3-16
1986 190E 2.3
1987 300D
1997 C36 AMG
2003 C320T 4matic

past: 1969 280SE 4.5 | 1978 240D | 1978 300D | 1981 300SD | 1981 300SD | 1982 300CD | 1983 300CD | 1983 300SD | 1983 380SEC | 1984 300D | 1984 300D | 1984 300TD | 1984 500SEL | 1984 300SD | 1985 300D | 1986 300E | 1986 560SEL | 1986 560SEL/Carat | 1987 560SEC | 1991 300D 2.5 | 2006 R350

Don't even think about adjusting it on the vehicle. It can be removed in two minutes (GSXR time) with a set of wrenches. One wrench loosens the locknut and the other wrench holds the nut on the top of the IP.

Make the adjustment after you remove it and then reinstall it onto the IP.

Check out GSXR's posts regarding this.