ALDA. Every 60x enigine I've had needed an ALDA adjust, it's in the FSM for weak acceleration below 2500rpm as a fix, is fairly simple and yields excellent results.

Problem is, once you adjust the ALDA in the weaker car, you'll need to do it on the other car.

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Gone to the dark side

- Jeff

Just looking at the 'brass?' linkage on my '83 300SD, did something primal to me.
What a magnificent set of mechanical artistry to admire.

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'06 E320 CDI
'17 Corvette Stingray Vert

What section of the FSM?

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 158k miles
06 E320 CDI "Rutherford", Black on Tan, 177k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 144k mi, wastegate conversion, ALDA delete

19 Honda CR-V EX 72k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife