Jump to content

Welcome to 205GTIDrivers.com
Register now to gain access to all of our features. Once registered and logged in, you will be able to create topics, post replies to existing threads, give reputation to your fellow members, get your own private messenger, post status updates, manage your profile and so much more. If you already have an account, login here - otherwise create an account for free today!
 
 

Photo

205 Dimma S16 Turbo Converting To 4X4


  • Please log in to reply
112 replies to this topic

#101
wicked

wicked
  • Drivers+
  • 627 posts
Joined: 18 Oct 2007
  • Location:Netherlands
Garage View Garage

if using 440cc injectors:   440cc/360cc*244=300BHP?

4 bar fuel pressure (3bar+1? bar boost) raised to 5,7bar (4bar +1,7bar boost): 5,7/4*300 ~ ~> 425bhp...ish.... if fuel supply and delivery is perfect.

 

 

Don't add the boost; 4 bar regulator = 4bar difference over the injector. It 'sees' 1.7 bar at the others side, so the pressure difference is 5,7-1.7= 4 bar again.

That's why you pressure regulator has connection to the manifold and not to open air.

300bhp is probably the better number. 

 

odd all you guys are maxing out your injectors so soon, are you running horribly rich or something?

Yes, to avoid knock and burned pistons.. 


Edited by wicked, 28 September 2017 - 09:47 AM.


#102
petert

petert
  • Pitcrew
  • 5,616 posts
Joined: 15 Nov 2003
  • Name:Peter Taylor
  • Location:Sydney, Australia

odd all you guys are maxing out your injectors so soon, are you running horribly rich or something?

 

I wondered that too. Max duty rate should be 85%. Beyond that you're into open & closing times and fantasy world.



#103
petert

petert
  • Pitcrew
  • 5,616 posts
Joined: 15 Nov 2003
  • Name:Peter Taylor
  • Location:Sydney, Australia

 

 

not common at all in the UK , I have seen it in Europe, price varies a lot, some countries it is more expensive than SUL.

I guess if you're not growing sugar cane locally it can be prohibitive.



#104
B1ack_Mi16

B1ack_Mi16
  • Pitcrew+
  • 2,780 posts
Joined: 03 Jan 2004
  • Location:Trondheim, Norway

Black MI - My remapper told me the 8bit map of my MS3 ecu has so poor resolution, making it difficult to achieve sufficient accuracy from idle to max rpm at any boost level. Other aftermarked ecus are much better. Maybe this is partly the difference in your scenario compared to mine, where my engine tends to overfuel in idle, resulting in often required cleaning of the spark plugs...

 

What ECU are you using?

 

I'm also running MS, but a MS3 Pro.

It has a lot of settings related to injector small PW input and voltage correction etc. all related to the control of the injectors.

Resolution can be chosen in mine so if there are non-linear areas in either MAP or RPM it is easy to re-bin the map and get more resolution in probelmatic areas.

 

Overfuelling at idle .. not possible to just pull off some fuel really?

Have you calculated the ReqFuel correctly? To be able to get low enough pulsewidths at idle?



#105
lybker

lybker
  • Drivers
  • 152 posts
Joined: 26 Jan 2004
  • Location:Haderslev, Denmark
Garage View Garage
Blackmi
To be honest, I have always steered clear of the mapping part, leaving this to people I trust. :-)

But i have the readout of the ecu in case you care to take a peak and see for obvoius mistakes. Any leaner and the car fails to start

#106
B1ack_Mi16

B1ack_Mi16
  • Pitcrew+
  • 2,780 posts
Joined: 03 Jan 2004
  • Location:Trondheim, Norway

But starting is controlled by a multiplier table? What version of MS do you have?



#107
Thijs_Rallye

Thijs_Rallye
  • Drivers
  • 65 posts
Joined: 05 Feb 2006
  • Name:Thijs Vanlier
  • Location:Limburg, Holland
Garage View Garage

Another problem is bump steer


 

 

Something like this should be able to improve your bump steer problem.

krdpsa_1.jpg

 

https://www.tricompe...ot-citroen.html

https://www.tricompe...orcees-205.html



#108
lybker

lybker
  • Drivers
  • 152 posts
Joined: 26 Jan 2004
  • Location:Haderslev, Denmark
Garage View Garage
Most excellent...this is an easy way to solve the bumpsteer issue :-)

#109
lybker

lybker
  • Drivers
  • 152 posts
Joined: 26 Jan 2004
  • Location:Haderslev, Denmark
Garage View Garage

finally- after some cranking over it starts and oilpressure is fine.

 

Also all wheels are spinning and gearchanges are as they should be. If it was not raining sobad right now, I would be out testing it 

 

https://www.youtube....h?v=734_tycSsSc

 

:D​  :D​  :D​ 



#110
Thijs_Rallye

Thijs_Rallye
  • Drivers
  • 65 posts
Joined: 05 Feb 2006
  • Name:Thijs Vanlier
  • Location:Limburg, Holland
Garage View Garage

It sounds a bit rough, but it's alive :D.



#111
lybker

lybker
  • Drivers
  • 152 posts
Joined: 26 Jan 2004
  • Location:Haderslev, Denmark
Garage View Garage

It is very rough - but having been sitting in the garage for more than a year, it seemed happy to be let loose :-)

 

https://youtu.be/tELXYODUfuo

 

Afterwards I found the vacuum hose to the ecu had a leak, causing overfueling and drowning of the sparkplugs :-P



#112
pugdamo

pugdamo
  • Drivers+
  • 1,023 posts
Joined: 08 Feb 2009
  • Name:Damian
  • Location:Camborne, Cornwall
Garage View Garage
It's looking like good progress, once it's sorted should be very good fun. Sounds like a Subaru at the minute though lol.

#113
lybker

lybker
  • Drivers
  • 152 posts
Joined: 26 Jan 2004
  • Location:Haderslev, Denmark
Garage View Garage
I belive i found the 2 major items causing offset engineparameters. First item was a leaking vacuum hose to the MS ecu. The other was for some strange reason, the injectorsize was wrongly set. Listed at 315cc, clearly the requested fuel table was changed alot when putting in the correct 800cc, adjusting inection time from 5,3 ms to 2,3ms - Now it idles and fires on all 4 :-)

Secondly I got the MS upgraded from the 250kpa sensor to a 300kpa, so Just need to confirm sufficient fuel delivery and I will find a 4x4 dyno to do the final adjustments...to bad the summer is passed and no more trackdays are planned for this year....

Attached Files