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Go Back   PeachParts Mercedes-Benz Forum > Mercedes-Benz Tech Information and Support > Diesel Discussion > Diesel Performance Tuning

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  #1  
Old 01-16-2010, 03:04 PM
Olivier's Avatar
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Are those IAT resistor any good to improve performances?Cheap on fleebay UK.

Cheap resistor on ebay that trick the IAT, on a E300 turbo diesel 1997 would that be:
Any good?
Any bad?
Would do nothing?
Might damage the engine?
Thank you.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180456201585&ssPageName=ADME:X:RTQ:GB:1123

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E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...
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  #2  
Old 01-17-2010, 02:29 PM
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Quote:
Originally Posted by Olivier View Post
Cheap resistor on ebay that trick the IAT, on a E300 turbo diesel 1997 would that be:
Any good?
Any bad?
Would do nothing?
Might damage the engine?
Thank you.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=180456201585&ssPageName=ADME:X:RTQ:GB:1123
I believe this is for the Petrol vehicle, so no use for your diesel 300!
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W123, 1985 300TD Wagon, 256K,
-Most recent M.B. purchase, Cost-a-plenty, Gulps BioDiesel extravagantly, and I love it like an old dog.

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  #3  
Old 01-17-2010, 03:33 PM
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Hello Alastair,
No good for diesel... How about Veg?

Really, I just lost four pounds then...

just got a reply from the seller:

If you have the sensor then it can be modified
I have one on a 2001 vitara diesel with a peugot engine in

Perhaps it does something...
__________________
E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...

Last edited by Olivier; 01-17-2010 at 04:45 PM.
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  #4  
Old 02-03-2010, 09:40 AM
Olivier's Avatar
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Join Date: Jan 2009
Location: Edinburgh
Posts: 570
I got it, its a simple resistor that attach to the temperature sensor plug instead of the sensor. I did notice something but I wouldn't say much at all...
Its a 17 pence resistor, I'll get the value later and post it if anyone want to try.
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Are those IAT resistor any good to improve performances?Cheap on fleebay UK.-snc10162.jpg  
__________________
E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...
Reply With Quote
  #5  
Old 02-16-2010, 12:31 PM
Olivier's Avatar
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Join Date: Jan 2009
Location: Edinburgh
Posts: 570
Finally got the resistance value, sorry for the delay. If anyone want to try, Maplin ( like radioschack) told me its a 4.7 K ohms resistor.
Olivier
__________________
E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...
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  #6  
Old 03-12-2010, 10:49 PM
is thinning the herd
 
Join Date: Mar 2010
Location: Columbus, Ohio
Posts: 3,334
Veggie oil or diesel won't change what sensors you car does and does not have.

AFAIK neither of my cars even have IATs. All you're doing is making the PCM think that it is seeing the coldest air so it will run more fuel. If you don't have more air flow in and out, what is extra fuel going to do for you? Make you mpg take a dump.

If you can find an IAT on your car, you can give it a shot and get back to us, as a resistor can't be more than a couple of pence. But don't expect any changes.
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  #7  
Old 03-13-2010, 05:38 PM
Olivier's Avatar
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Join Date: Jan 2009
Location: Edinburgh
Posts: 570
I have it in the car since I post the topic. I think it does something but minimalistic and certainly not the 30 HP gain, the best would be to test it on dyno. I have slightly blocked the air for the booster sensor as well, those 2 might do a bit of improvement, but again, only a dyno would tell.
Olivier

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E300TD year 2000. RUSTY SOLD
cost a fortune to maintain on the road
but run well on WVO
Second Merc died due to corrosion ( NOT rust) How can mercedes get away with that for so long?
Third lasted a month then went away...
Fourth now... Corroded too...
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