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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 06-27-2011, 08:58 PM
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trying to get a few more HP

well i did my allotted reading on mild performance gains and nothing worked to increase my cars performance.

i did clean out a plugged banjo intake fitting to the limiter valve.

limiter valve is clear and holds pressure

alda holds vacuum and pressure

alda was already adjusted 1/2 turn from full adjustment. so i turned set screw the 1/2 turn ccw

stock time 20-21 sec

times below reflect all mods added together and no power braking

ingen intake filter 19-20 sec

removed alda 22-23 sec noticeable power loss

plugged egr vac line 22-23 sec

put it all back to stock and changed secondary fuel filter for yucks
and did a 20 sec

no visible smoke from tailpipe at anytime

these times are sort of accurate. im pulling out from a side street each time so maybe the car is slightly faster. also im looking at my gps driving and doing the stopwatch on my phone lol

i next adjusted the KKK"s wastegate turned it in [cw] 4 turns 1/2 turn at a time i didnt want to go any farther in just in case.

got the boost up to 10-11 psi from 9 psi. the test gauge was maxed at

10 psi so i rigged a tire gauge which reads 0-60 psi and it too read 10-11 psi

just to make sure the alda wasnt leaking i bypassed it. the reading didnt change

1985 300D turbo 58K miles with no trans slippage

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  #2  
Old 06-28-2011, 05:46 AM
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I rigged a tire gauge before I bought my boost gauge at Harbor Freight.
My electric fan has helped power alot.
83 300 sd electric fan,alda in landfill,straight exhaust,Electric fuel boost pump,Monark nozzles,boost 16 psi, and a real cold air set up.
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Last edited by oldsinner111; 06-28-2011 at 02:26 PM.
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  #3  
Old 06-28-2011, 11:09 AM
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You must not understand what the alda is and how it works, otherwise you would understand that having power loss after removing it is impossiable (unless you removed the wrong thing) . Max out your alda adjustment, remove the overboost protection valve, and adjust your delivery valve holders and be done with it.
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  #4  
Old 06-28-2011, 11:15 AM
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adjust your delivery valve holders ????
can you explain
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  #5  
Old 06-28-2011, 11:17 AM
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Been running good for 3 years.
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  #6  
Old 06-28-2011, 10:00 PM
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found more info here so i:

removed pressure line between turbo / wastegate and jumped to 20 psi so i quickly backed off the throttle. i got a lot of smoke from tailpipe also

turned the adjuster in another 2.5 turns and then backed it off a 1/4 turn to get a max boost of 15-16 psi

removed the alda again and went for a ride no smoke but,

it feels better from the seat. i couldnt test 0-60, too dark out

tomorrow ill post the times
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  #7  
Old 06-28-2011, 10:23 PM
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plug the ARV valve vacuum line.
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  #8  
Old 06-29-2011, 01:18 AM
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just read up on that arv valve.

thanks ConnClark

thats getting plugged also i adjusted the linkage so its sure to bottom out on the stop
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Last edited by richclan; 06-29-2011 at 08:58 AM.
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  #9  
Old 06-29-2011, 09:40 AM
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If you are climbing a grade keep her under 14 psi with your right foot.
!6 psi is for short spurts of speed.
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  #10  
Old 06-29-2011, 11:05 AM
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Quote:
Originally Posted by oldsinner111 View Post
If you are climbing a grade keep her under 14 psi with your right foot.
!6 psi is for short spurts of speed.
thanks

how respectable is a 17 sec 0-60 time????
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  #11  
Old 06-29-2011, 11:13 AM
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Better than 22.Run 1/8 of a tank,remove excess weight,inflate front tire to 45 psi.Then one foot on brake raise engine rpms to 2000.Then launch.
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  #12  
Old 06-29-2011, 11:18 AM
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Quote:
Originally Posted by oldsinner111 View Post
Better than 22.
HAHAHA

i going to retest when i have a copilot to get a more accurate time
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  #13  
Old 07-13-2011, 10:48 PM
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my 240d was doing it in 9 seconds you got work to do mwahaha
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  #14  
Old 07-15-2011, 11:42 AM
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I had a 240d pass me,in my w140.The car had 10,000 butterflies on the back glass pushing.it probably had a gforce chip.hahahaha
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Last edited by oldsinner111; 07-16-2011 at 03:32 PM.
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  #15  
Old 07-16-2011, 03:51 AM
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uh? what?

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