No as I understand it they all do it to reduce stress on the transmission.

Many cars dial back the power during upshifts. Certainly not unique to a diesel or a chipped car. I experience the same in our 1998 car which is stock...it preserves the transmission and smooths out shifts just a bit.

Plenty of people, including other W210 diesel owners, had driven my chipped car. There was a significant difference with the tuned module. Whenver the car visited the MBz dealer, the mechanics always had something to say about it There was no mistaking the car had been altered.

It's a good selling point when diesel is $4.30/gallon, right

That's interesting....now that I think about it, mine does it too.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

A very easy, on the car DIY, adjustment of a slight advancement in injector pump timing would help reduce EGTs, and increase efficienvy. Retarded timing has been stock for years now for NOx emissions, and a slight advancement would bring the EGTs down and increase MPGs. Just slightly loosen the three 13mm head bolts on the front of the engine at the top center, right, bottom left of the vacuum pump, and the one at the back of the IP on the support bracket. Don't take them out, just loosen them a couple turns until the IP is looser. Then turn the adjustment bolt on the left hand side of the IP (right when facing the engine with the hood up) about 3/4 turn to the left (counter-clockwise) should be a safe and good starting point. Then re-snug the three bolts on the front and the one at the back.

What is the designation / maker of the engine computer used on this car? Is is used on other brands of cars?

It is a standard MB Bosch ECU. I know a guy in Nashville who seems to know his way down to the transistor on these things.

Stage 2 Group buy info update:

Please no flame wars, if you expressed interest, and it was misread we can all please be polite here. Just send a PM, and I'll edit the post. Just putting it down on paper the sort of Go/NoGos when we move on later to sorting out all of the details. If you want in, get in now as they will be asking $410 for all of these later as they charge by it on an À la carte method of pricing, even though it is no more work on the tuner to upload a different file for things, ie(stage 1, stage 2, stage 3, MAF, EGR, ect) À la carte adds up quick. Many thanks to Michael for being the liaison to get the dialog going with Oliver.

completed chipped members happy & successful:
nhdoc @peachparts
gen3performance @SuperTurboDiesel
+ many others

Group buy list:
1) 97e300 Sold +1
2) bhowell_10 Sold +2
3) Joe T. Sold +3
4) Anjay Sold +4
5) David S Sold +5
6) EDBSO Sold +6 @Peachparts
7) shertex Sold +7 @Peachparts
8) KarTek Sold +8 @Peachparts
9) Tom U Sold +9

Who wants in? I say we shoot for $199 if we get enough people. Stage
2 + EGR/MAF


10) tentatives? Gearbound?
11) tentatives? Tom?
12) tentatives? CRD4x4?
13) tentatives? Willie?
14) tentatives? A McRenolds?
15) tentatives? David B?
16) tentatives? Mario D?
17) tentatives? Michael M?
18) tentatives? aklim?
19) tentatives? Evan M?
20) tentatives? Ashwin B?
21) tentatives? Fred B?
22) tentatives? Phillip U?
23) tentatives? KajTek1? @Benzworld
24) tentatives? Tuchun C's E300?
25) tentatives? Tuchun C's Girlfriend's E300?
26) tentatives? Tuchun C's Mom's E300?
27) tentatives? raysorenson?
28) tentatives? tits1? @Peachparts
29) tentatives? F18 ? @Peachparts
30) tentatives? Number_Cruncher? @Peachparts
31) tentatives? RunningTooHot? @Peachparts
32) tentatives? DR.DIESEL? @Peachparts
33) tentatives? Car Nut? @Peachparts
34) tentatives? raMBow? @Peachparts
35) tentatives? darkostoj? @Peachparts
36) tentatives? uberwgn? @Peachparts
37) tentatives? McCool300TD? @Peachparts
38) tentatives? husk? @Peachparts
39) tentatives? JasonC? @Peachparts
40) tentatives? JimSmith? @Peachparts
41) tentatives? TMAllison? @Peachparts [v6 CDI chip]
42) tentatives? E300TSC? @SuperTurboDiesel
43) tentatives? bruno_pinho? @STD
44) tentatives? Hario'? @STD
45) tentatives? F.R.A.S? @STD
46) tentatives? muuris? @STD
47) tentatives? maxypriest? @STD

Can someone explain the MAF delete part of it, what that accomplishes? I was looking at Stage 2 and EGR kill....just not familiar with the MAF delete part.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

Sure,

The ME (Motor Electronics or the engine ECU) on the OM606 turbo in the 98-99 E300s never looks at the values at the maf sensor except for some values close to idle and a little above. The ME looks for a reduction in MAF air flow basically only when the EGR valve is opened and that pressurized EGR gasses are flowing into the intake manifold over fresh clean oxygen rich air from the air box/air filter.

KarTek and others pioneered a diode/resistor mod to simulate this, which is great and works fine. This tune will further eliminate bottlenecks in the software so it can be ignored totally; hopefully making the diode resistor mod not needed. You skip buying a new MAF every 50,000 miles, and use a better cold air induction or different setup if you wanted to clean up your engine compartment.

The Manifold Absolute Pressure or MAP sensor that is on the intake manifold sees the air pressure that is a result of the turbocharging. This MAP sensor is what the injector pump fueling is based on. The mod simply helps you not get a check engine light with no MAF.

We're almost up to the magic number. If anyone wants in pm/reply/email

Is the MAF delete something Oliver can definitely do? I was reading a MAF delete thread from a few years ago were someone commented that Oliver didn't think it was possible. Perhaps it's been figured out since then.

__________________
14 E250 Bluetec "Sinclair", Palladium Silver on Black, 153k miles
06 E320 CDI "Rutherford", Black on Tan, 171k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver, 142k mi, wastegate conversion

19 Honda CR-V EX 61k mi
Fourteen other MB's owned and sold
1961 Very Tolerant Wife

I'm in.

This is great. We're picking up steam here. So far, we've got:
1) 97e300 @superturbodiesel
2) bhowell_10 @superturbodiesel
3) Joe T. @superturbodiesel
4) Anjay @superturbodiesel
5) David S @superturbodiesel
6) EDBSO @Peachparts
7) shertex @Peachparts
8) KarTek @Peachparts
9) Tom U @superturbodiesel
10)c-140A @peachparts

If you're on this list, shoot me an email at oshikrosu(at)aim.com with the subject "Group Buy" and we can coordinate this whole thing. If we get some more heads, we could possibly negotiate for cheaper

I don't think this tune includes MAF delete. But e300tsc made a resistor delete at superturbodiesel