getting depressed now
Moderators: jsmcortina, muythaibxr
getting depressed now
Hi all im using msns-extra 029q2 v3 vw 20vt engine 150bhp
getting to the point of scrapping the idea of running megasquirt
got the conversion up an running will idle sweet now got lc1 wideband which is configured both mt and logworks read the same
it will idle ok as soon as i try and drive it will missfire pop and bang if under to much load havnt been able to get it above 3000rpm even on ligh load its not right
im using vb291s to fire the coil on plug packs they are 3 pin pack and seem to work ok
on the original car the engine came from the coils plugged into a output stage ignition controller should i have used this between the ms and the coils is that the problem im getting like a weak spark under load
im sure its a weak spark cos even at 13 to 14 afr the plug will soot up which means i then have to clean them before another run
id post my datalog and msq but the forum wont give me that option
helpppppppppppppppppppppp
getting to the point of scrapping the idea of running megasquirt
got the conversion up an running will idle sweet now got lc1 wideband which is configured both mt and logworks read the same
it will idle ok as soon as i try and drive it will missfire pop and bang if under to much load havnt been able to get it above 3000rpm even on ligh load its not right
im using vb291s to fire the coil on plug packs they are 3 pin pack and seem to work ok
on the original car the engine came from the coils plugged into a output stage ignition controller should i have used this between the ms and the coils is that the problem im getting like a weak spark under load
im sure its a weak spark cos even at 13 to 14 afr the plug will soot up which means i then have to clean them before another run
id post my datalog and msq but the forum wont give me that option
helpppppppppppppppppppppp
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What dwell are you running? As long as the VB921 are cool, try increasing the dwell.
Are you running resistor plugs?
Do you get any tach spikes or resets?
James
Are you running resistor plugs?
Do you get any tach spikes or resets?
James
I can repair or upgrade Megasquirts in UK. http://www.jamesmurrayengineering.co.uk
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
My Success story: http://www.msextra.com/forums/viewtopic ... 04&t=34277
MSEXTRA documentation at: http://www.msextra.com/doc/index.html
New users, please read the "Forum Help Page".
hmm
hi james my dwell is
5.0 cranking
3.0 running
it seems to get really bad when i put a bit of load on the car if i drive it gently its not to bad but if i try to acceleratre in 4th it just bogs down pops and bangs
richer or leaner doesnt seem to make to many changes to the running it will sit and idle ok
i did notice my coolant temp spikes all over the place when warming up but once its warm it sits at 101.7 and doesnt move on the datalogs even though mt reads it going up and down with the fan
ive tried to different sets of plugs cant think of the top of my head what they are ill check
i dont think i get tach spikes when it start to miss behave i tried to post a datalog but the forum wont let me
Ben
5.0 cranking
3.0 running
it seems to get really bad when i put a bit of load on the car if i drive it gently its not to bad but if i try to acceleratre in 4th it just bogs down pops and bangs
richer or leaner doesnt seem to make to many changes to the running it will sit and idle ok
i did notice my coolant temp spikes all over the place when warming up but once its warm it sits at 101.7 and doesnt move on the datalogs even though mt reads it going up and down with the fan
ive tried to different sets of plugs cant think of the top of my head what they are ill check
i dont think i get tach spikes when it start to miss behave i tried to post a datalog but the forum wont let me
Ben
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Re: getting depressed now
I'm certainly not expert at this sort of thing but that sentence stuck in my head in light of something I read ealier today in this threadbens_cab wrote: im using vb291s to fire the coil on plug packs they are 3 pin pack and seem to work ok
subie4me wrote:If you want to use the cop's without the added complexity of a second vr circuit, try this. First,check that your cop's only have two wires going to them. Three wires usually means that the driver is built in. If you have the two wire version, wire pairs in series for wasted spark, and drive them with the vb921's. This gives a hot enough spark to run a 2 liter subaru @ 20lbs of boost. If you are lucky and have the three wire cop's, them you don't even need the vb921's. You can drive them from the led's