Hey guys,
So after speaking to Oliver at SpeedTuningUSA, I want to get a feel for who would be down for a group buy of the stage 2 tune with egr kill. It would have to be money up front to them so commitment gentlemen and we need at least 10 people. Normal going price is 375 and the group buy will be 250 per head. This is for 1998 & 1999 e300 models only (maybe 97 too if thats what you're into). +50hp +100nm for 250 is sick. If you're down, post.
Michael

I could be interested. I was going to do it at RocketChip since I could drive there. But $250 vs. the RocketChip price of $435 is tempting.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

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

A bit interested, I have already done the EGR delete, is there a price without it?

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1999 Mercedes E300TD daily driver sold at 238K miles 106K miles were mine, rust worm got it :-(
2006 Mercedes CDI new daily driver! 56,000 miles May 2016 now 85,625 Apr 2018 and Apr 2019 101,000 miles Apr 2020 109,875. March 2024 135,250

I'm probably going to get a chip eventually but this group buy would probably be for the same program across the board right?

I already have all the power I need, I just need things like shift points adjusted and waste gate behavior as well as cruise control attack, decay, etc...

More drivability stuff.

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-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Without swapping out the delivery valves this is vaporware.

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CENSORED due to not family friendly words

I have seen a few cars personally that have had this tune done. The 98-99 E300s in the USA have the 6.0mm pump elements stock, the elements, turbo, and rack postion still have some to give stock.

The first extra 50+hp and 100+NM of torque are there stock with the tune. Also people say and extra MPG from keeping the RMSs lower around town because of the extra torque and staying in higher gears more time.

After the first 50/100 then it would be vaporware, but you almost get CDI performance with higher revving engine with just the tune. Also the EGR delete helps you burn less fuel too.

The Turbocharger, the intercooler, the stock inside diamerter of the high pressure fuel lines, the inside diameter of the low pressure fuel lines, the stock lift pump, the stock exhaust manifold design, the stock fuel injectors, and the stock delivery valves are all limiting factors at roughly the same time when adding power.

However, the chip tune does give you the extra 25% hp and 35% torque stock. I have personally seen/felt it. Seems like a new car, it just wants to GO when you tough the throttle. Makes your 0 to 80mph time go down 2 to 3 seconds.

Agreed that there are limiting factors past the free area.

Look at it this way. How much more do you get on a gas car with issues about air/fuel ratio and pre detonation/knock to worry about? What about cars that are normally aspirated? Answer: about 5% at the most

the turbo and air/fuel ratio range of a turbodiesel give you MUCH more wiggle room to work with

FYI from what I've heard you get an extra 3-4 mpg.

Just wondering: why (again, from I've heard) is there a bit of black smoke at WOT?

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

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

These links make for some good reading.

Evolution Chips? Common TDI Tuning, Remapping and Performance Chips Questions and Answers

Evolution Chips? Things to consider when purchasing remapping or diesel tuning.

Also the FAQ at rocketchip.com.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

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

I've had both Rocketchip and STUSA tunes for my car. There is a significant change in performance with both.

We've attempted to dyno but could never get the traction control fully disabled.

I don't know that I'd agree with any MPG improvement.

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1998 W210 diesel (wiped out by a texter)
Baum spring compressor "for rent"

If anyone wants in, shoot me a pm and you can get added to the list on superturbodiesel: w210 Stage 2 speedtuningusa group buy.

It was Jeff at RocketChip who told me that.

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

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

Based on my personal research and experience, here's a general rundown of what things can be effected on the engine to increase HP:

Total fuel quantity - like "turning up the pump" on a mechanical pump. The rack simply moves further to deliver more fuel. The drawback to this is that the injection event time is increased further into the piston stroke, combustion efficiency suffers and EGT's rise.

Max boost - the ECU has complete control over the wastegate via the vacuum transducer and can command it to remain closed up to the pressure limits of the compressor. This probably shortens the life of an already hard working turbo. Also, pushing the turbo out of it's efficiency map raises intake temps and EGT's.

Timing - nope, the ECU can't touch the timing on this engine. Only on HPCR, TDI and HUEI engines where the ECU controls the actual injection event. The OM606 has a mechanical flyweight timing device just like the older engines.

Other parameters - the ECU can manage the fuel curve of the engine and tailor it to existing load and demand conditions. It can be altered to deliver more fuel faster (like adjusting the ALDA) to make the car feel "snappier". The ECU also manages things like shift points, EGR and cruise control behavior.

This is not to answer any specific question but more to help anyone who is curious to understand the operation.

__________________
-Evan


Benz Fleet:
1968 UNIMOG 404.114
1998 E300
2008 E63


Non-Benz Fleet:
1992 Aerostar
1993 MR2
2000 F250

Nice rundown. How much boost does the stock setup run?

On the TDI you can see an economy bump because the timing is advanced some and the EGR is less or off. Since the 606's computer has no clue / control of what the timing is I wouldn't see a tune helping economy much either.

I've driven uberwgn's car, it was quite nice Still can't get over how the computer cuts boost every time the trans shifts though If I owned one of these cars that would be the first thing I'd want tuned out.

-J

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1991 350SDL. 230,000 miles (new motor @ 150,000). Blown head gasket

Tesla Model 3. 205,000 miles. Been to 48 states!
Past: A fleet of VW TDIs.... including a V10,a Dieselgate Passat, and 2 ECOdiesels.
2014 Cadillac ELR
2013 Fiat 500E.

Is this comment in reference to a tuned car?

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14 E250 Bluetec 4Matic "Sinclair", Palladium Silver on Black, 154k miles
06 E320 CDI "Rutherford", Black on Tan, 172k mi, Stage 1 tune, tuned TCU
91 300D "Otis", Smoke Silver on Tan, 142k mi, wastegate conversion, ALDA delete

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