sang55

I just saw some1 try to sell DTM intercooler on classified section , he said the brand new DTM IC is $3500 while SLR IC is way too expensive . Please share your thought what different of these 2 cooling mods ? Are they perform same HP ? Thanks alot

Jakpro1

DTM is a larger intercooler although it goes in the same place as the stocker.

Tech-Tune

Thats interesting, I didnt know this upgrade was available for the 55's.

Question: Does anyone know the dimentions of the IC core?
And what about the dimentions of the DTM one?

Thanks

Jakpro1

Okay, didn't wanna say anything but be very careful of these DTM cooler being sold lately. They were offered by a company that went out of business (or whatever, they are not on the forum anymore) and they are welded to a piece that removes your supercharger bypass valve. You need special programming to go with it or the car will run in limp mode forever.

Not sure if you can actually buy the DTM cooler separate, I know it just comes with this bypass valve removal piece.

"How do you know this?" you might ask.

I have the same 5500$ piece sitting on my shelf of the garage right now.

Recently just found a real nice guy that works at the local UTA bus garage. Yeah yeah I know, but these guy have LARGE money for high tech equipment and they all work on their race cars under the table at the shop.

We are thinking about using a special cutter they have to separate the cooler from the pipe and having their aluminum welder mate it to a stock pipe with the supercharger bypass valve on it. My tech thinks it won't fit without that special pipe so who knows??

(Supercharger bypass valve) = a smaller version of the throttle body that sits under the supercharger and opens at certain times. To reduce too much boost etc.

Yacht Master

The difference, DTM is approx 50% larger than stock. And like Jakpro says no bypass.


Victor & Finny had plans to offer a low cost SLR style cooler I have not followed up on that, but the turbo/supercharger compound induction they have mentioned, will require blower bypass and SLR style intercoolers after the bypass valve.
The SLR coolers are 300% larger than stock.

nitrous_nate

That is my DTM cooler I have for sale in the classified section. There is a huge difference in size and construction from the stock unit. Several of the major tuners can delete the boost by-pass valve completely from the ecu and that will shut it off. Jakpro1, how can you down the part soo much if you have never installed it and know how much power it gains and why the boost by-pass valve is deleted, you gain +2 more pounds of boost b/c of that. +2 more lbs. of boost is good for 20rwhp alone much less the added cooling capacity. Jody, formerly known as MIG-E55Rocket on here now goes by V12Godspeed had this part on his car and saw major benefits from it and his car was very impressive. I will post some pics I have of the inlet and body size comparisons and you can be the judge on how much its worth. Btw, the welds and construction are as good as I have seen and I think there are so few of these around that no one really stepped up to the plate so they just dropped the r&d all together and canned it. I do not have to sale it and know it has definte rwhp and seat of the pants gain, if it doesnt sale I will use it in the future

Zod

From what i recall MB did the bypass valve for warranty issues i think. Still looks nice and i always enjoy looking at new toys

Hammer Down

Jim or Vic is this part of the VRP700 if not would something like this help?

chiromikey

his car was definitely impressive but (and correct me if i'm wrong) i don't recall it being any faster than other similarly modded e55's without the dtm style cooler.

i remember when this was being discussed a while ago and all i seem to recall were claims similar to yours but i don't think anyone ever showed any proof. again, please correct me if i'm wrong.

stevebez

It looks mbe 10% longer....?

Dunno if the ECU trickery to delete the bypass is worth this increase...

Also the frontal area of the cooler is the same, but longer, which means the boost drop off over the core will increase, perhaps that's why there is no bypass valve opening (regardless of the lack of space).

SLR style is the way to go... they sure are pretty and magnitudes more effiicient.

V12Godspeed

The car definitely had more Power and more torque. The Intake temps were much lower. I believe this part is an OEM part. The 2003 SL55 was done with this piece, I believe that is where this is derived from.

MJ50

very interesting... i'd like to see some numbers...
it's chunk of money but if it give nice gains in return...

Vadim @ FD

C32 which came out in 2001 did not use bypass valve. AMG used the same design on 55 engines and ran into high fuel consumption problems on the autobahn. 2-3 mpg at speed. Adding bypass valve more than doubled that mileage.

New design with bypass valve came out in mid 2003, so some early 2003 SL55s did not have it.

Stevebez is correct, longer core will add to the air drag thus reducing available boost. I have an E55 in the shop right now that has no-bypass setup on it, I am going to see of we can make it work and what it's worth.

sang55

Vadim pls post update and if it perform good # vic might do some custom IC kit . You knew we all want our supercharger are running cool in summer.

Jakpro1

Ugh, thanks for making me feel even worse.

Well it's official, I really do have a 5500$ trophy on my shelf.

Well unless Vadim can get er to work with the bypass.....then heh heh heh.

V12Godspeed

The Gas consumption did go up, but it was my weekend driver so not much to worry about there. lol!

V12Godspeed

Jim,
if vadim can get the tuning right and is able to shut off Bypass valve, I'd say install it!

Zod

You will also get an excuse to track her now when the car is down there

BlownV8

Bypass valve is there so the engine can operate as a normally aspirated engine when you are not on the gas. The valve increases fuel mileage and also helps to the engine to run cooler. Mercedes uses an electronic clutch so the supercharger is not spinning under vacuum conditions but the bypass valve still helps the engines mpg by improving the airflow under vacuum.

stevebez

The main problem on the K55's is the intercooler is in between the S/C and motor - it should have sat on top of the S/C - i.e. S/C upside down as we see it now...this would have given us much better scope to fit a larger top mount unit. Not only this but being sandwiched it traps allot more heat too...

For the ultimate 55, TT is the way to go and use all the space occupied by the blower and I/C for one massive top mount... and go large on the H/E and pump.

Use the area where the primary cats are for the turbo's and you are set....

Better intercooling and more efficient boost. Minimum +100hp pick up when pumping the same boost as before.....

stevebez

Did not notice before but I see non stock secondary injection pump valves on the Bin-S car.

Fidel_CashFlow

do you still have that intercooler?