Questionable HP Increase Device... - PeachParts Mercedes-Benz Forum

350SL4spd · #1 09-28-2004, 01:56 PM

Just stumbled across this on eBay.

http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&category=6783&item=7924965795&rd=1
He has one listed for every conceivable model of MB. Interesting concept...I just wonder what wires he's hooking the thing into and the possible concequences for ones engine/expensive sensors.
Any ideas what exactly this thing hooks to/how it adjusts what-ever it adjusts? (He calls it an IAT sensor... what is that on an MB...knock sensor?)
Just killing time and a little curious.....

-Matt-

nglitz · #2 09-28-2004, 04:22 PM

My guess is that he puts a resistor into the coolant or air temperature sensors and trys to fool the ECU into thinking the engine is cold. That way, it will run a bit richer. big deal.

Old300D · #3 09-28-2004, 04:51 PM

Notice the seller hides the identity of the bidders. Often they get emailed criticism and insights about the product that might convince them to withdraw their bids. I saw the same thing with "electric superchargers" selling for $100 or more. It was a simple $20 bilge fan that wouldn't even move air, let alone compress it in your intake. :p

TX76513 · #4 09-28-2004, 05:57 PM

Quote:

Originally Posted by nglitz

My guess is that he puts a resistor into the coolant or air temperature sensors and trys to fool the ECU into thinking the engine is cold. That way, it will run a bit richer. big deal.

I think you are 100% correct - but it doesn't say your fuel mileage is going to get flushed also

manny · #5 09-28-2004, 06:53 PM

IAT = Intake Air Temperature.

350SL4spd · #6 09-28-2004, 11:06 PM

I was just curious. I know a lot about engines, but I always like to know a little more about the function and (possible) harmony of the (miriad of )sensors/ECU set-up on these babies, and what can be done to trick them. Not that I am going to try anything like this, but it's nice to know how these things work.
-M-