MSefi.com read only forum (Jan.15,2018)

Hello.

I have been runnign my 350tpi with ms11 for a couple of years and it has been working nicely. All of the sudden after being parked for about a month it gets way too much fuel and the pulsewidth is in the reds all the time while running. The strangee thing is that i get a pulsewdith and a ego reading with the engine turned off, not right???

i have included a screendump from tunerstudio with ignition on and engine not started

I think an msq and log would be more helpful.

Ken

Hello.

I have added the current msq. I can´t get a log as it runs so rich that it´s impossible to drive. I tried an older msq that i know did work but with the same result. I think it´s most likely some hardware problem with the ms11.

Regards

Anders

miniman wrote:Hello.

I have added the current msq. I can´t get a log as it runs so rich that it´s impossible to drive. I tried an older msq that i know did work but with the same result. I think it´s most likely some hardware problem with the ms11.

Regards

Anders

You don't necessarily need to drive the car to get a meaningful log. A log of starting and running would at least be of some help.

Since your ReqFuel is -21 I am assuming 19# injectors ala 305 sbc....... Is that correct?

Ken

I have stock tpi 22 lbs injectors. I can try to get a log while starting the car. I do not believe jhe problem is in the msq as i tried several with the same result. Do you know if i should get at pulsewidth reading and ego reading with the engine off /just ignition on) ? I don´t think thats correct.

regards

Anders

IIRC, mine reads very lean at switch on. But the O2 sensor shouldn't have any effect at start or low engine speeds anyway.

It's interesting that your pic says (** v2.90E embedded code by B&G**) on the top of the TS page - mine gives the project name.

Hello again.

I couldn´t get the car started so a had a guy very experianced in building MS controllers check it and he hasn´t found anything wrong with the box. I changed sparkplugs as they where severly flooded and it started again but runs just as rich as before. I have included a logfile from this startup.

Regards

Anders

What are you using for an O2 sensor?

It seems like it's landed in a cell where it has a lot of pulse width; that cell may need to be leaned out.

And that's a lot of acceleration enrichment being pumped in.

Hello.

I use a Innovate LC1. I get exactly the same result when i try the tune from your TBI conversion wich is the one i started with some years ago but i have never had this problem before.

Anders