ok scrap the v8.its 2 big. 2 much cutting involvd and besides,there will no place left for a turbo hehehe

hey guys. Whats the difference between the m103.983 and the m103.985

ok,so i sent the car in for a compression test and some minor vacuum issues. Sumbody tried stealing the car and broke my locks hence the loss of vacuum. Im hoping to get my wideband afr next payday. And thereafter my manifold,downpipe,intercooler,dump valve. I have a plan regarding fuel managment. The stock fuel pressure regulator reads vacuum up til ambient air pressure. Im going 2 use a thinner diameter pipe from the idle hose to the charge piping. Im hoping this will make the fpr more sensitive 2 vacuum.then enrich the base mixture via the lambda screw. In theory i would get lean afr at idle and light load and rich at full load and wot(boost pressure). The wastegate i am ordering is set at a safe 4psi. I hope this experiment works for all would be budget turbo enthusiasts.

THe FPR is not vacuum referenced, it is vented in case of rupture. CIS delivery is not directly correlated to it's system pressure like EFI. CIS system pressure gets further divided into control and delivery and you will need to lower the control pressure to gain enrichment. I recommend a more basic understanding of CIS injection before attempting to modify it.

__________________

90 300TE 4-M
Turbo 103, T3/T04E 50 trim
T04B cover .60 AR
Stage 3 turbine .63 AR
A2W I/C, 40 LB/HR
MS2E, 60-2 Direct Coil Control
3" Exh, AEM W/B O2
Underdrive Alt. and P/S Pulleys,
Vented Rear Discs, .034 Booster.
3.07 diffs 1st Gear Start

90 300CE 104.980
Milled & ported head, 10.3:1 compression
197° intake cam w/20° advancer
Tuned CIS ECU
4° ignition advance
PCS TCM2000, built 722.6
600W networked suction fan
Sportline sway bars
V8 rear subframe, Quaife ATB 3.06 diff

are you saying that the stock fuel pressure regulator doesnt vary? Like it just has an on and off type of operation. Most of the bosch cis manuals i have read arent very elaborate on its function. Just tells you that its there. I know that the fuel pressure regulator from the kompressor mercs can read boost. What about one from a gti golf? The control pressure is moderated by the eha valve right?

std fuel system has constant pressure, it is not vacuum referenced.

__________________
ce 320 amg
widebody
tiwn turbo
Mutty 'der nail'
soon to be a six speed nail


"some mods improve your car and make it into something it never was, other mods, however, although essentially the same, are not, and make that car a ricer"

if your car isnt shiny, you dont know what you are talking about, remember; paint shine = knowledge. In order to be taken seriously, you should spend all your money on paint, (and get a dyno reading).
Dont forget to polish it often

Man the cis fuel head uses an internal pressure regulator. Also the cis head controls fuel flow Throu differential pressure between the 2 internal chambers separated by a thin rubber membrane. Any extra fuel enrichment control needed is done thruthe eha.

The external regulator is there to uniform the return fuel stream into a smooth flow.

Eha docent work by voltage but a signal width that's varied by the ecu (I can bewrong here). On ur car man as I said before just custom fit a cis system from a Saab or Volvo turbo car. It will work great even if it's a 5 cyl Volvo. Just close the extra fuel line that u dont need. It will function perfect and u won't need to bother with too much tuning.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

ok. I understand now. My car doesnt have the warm up regulator. So tell me jay.how does the fuel head from a turbo saab or volvo recognise boost? Is it designed with a fuel map for use with a particular type of turbo? Or does it have a manifold pressure sensor?

You need to read abt it online but what u need is the cis system as in the head and the few electronics that run it. It has a mechanical fuel regulator inplace of the eha which is controlled by an ecu that reads boost. Or in the later ones u get an eha that is contained by an ecu that reads fuel. Search online for Volvo turbo info the old ones.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

pardon my insanity guys. And the many questions. But im just loving how much i am learning about this system. Tell me, is there some way of rigging up a device that will apply an extra 10mA to the EHA valve? And have it connected to a switch that recognises boost. That would be a cool enrichment device. Wouldnt it? Or am i just crazy? Ah well the only stupid question is no question. Thoughts?

i am no electronics expert but what u suggested is the bases on which the moselman enrichment device works.

__________________
Jay,
-----------------
-1995 Blue W202 C36 AMG (M) SOLD ;(
-1995 Black W140 S500 (Lady)
-1992 Black W124 E300 (Dima) (Ex-Mosselman
Twin turbo Kit).
-1988 Black W124 300 E 4-Matic.(Nadeen)
-1983 Brown W126 500SEL.(Old Lady)(Sold)
-1981 Gold W123 280CE.(Dareen)(Sold)
http://www.youtube.com/user/jayrasheed

yeah me too. Im no expert. Maybe sumbody electronically minded can chime in. Would this work? Connect positive side of battery to a 1200ohm resistor then to a 20ma fuse then to a hobbs boost activated switch then to the wiring harness of the eha valve. All in series. That would provide an additional 10mA on the eha valve when it sees boost.or would the negative terminal provide too much negative voltage?

Do you have CIS ( no EHA has frequency valve ) or CIS-E ( has EHA )

You're heading in the right direction but keep in mind the battery output is variable.
You'll need a voltage regulation device in the circuit to stabilize and give a consistent output to the EHA.
Trim pot would also help to dial in the mA output desired.

Something like this may work...?
3-15psig / 4-20mA out..
http://www.omega.com/Pressure/pdf/PX271A-i.pdf

__________________
http://i19.photobucket.com/albums/b1...c/GOWIDE-1.jpg
1971 280SL ROADSTER
1988 300CE TWIN TURBO WIDEBODY
1994 E320 CABRIOLET
1999 C43 AMG
2005 G55K AMG
2008 CLK63 AMG BLACK SERIES

thanks for the info dude. I have CIS-e with open loop. I think its called digifant. I have an eha,no warm up regulator,no o2 sensor.

wow man, are you like some kind of hidden genius or something? Thats exactly what i need! I was thinking around the 0-5 psi model. 20mA or technically speaking 16mA extra current at the EHA should be sufficient enrichment for 4-5 psi boost. It appears that a change in 3mA causes AFR values 2 change by 1 part. Eg @ 0mA-AFR is 11:1 and at -10mA-AFR is 14:1. Obviously the only way 2 get accurate measuring of the AFR is with a wideband. Will post numbers up when evrything is up and running. Btw i found a gr8 source for wideband sensor and guage. Www.deporacing.com. Made in taiwan but 150 usd is dirt cheap. Could also mean im paying for dirt.lol Would i need anything else 2 make the circuit work on this enrichment module?