HI,

My friend drives B16A1 CRX Vtec 1991 with a simple turbo setup, including a VAFC with all the correct settings according to users here and other forums. The problem is that he gets a errorcode 3 from the ECU every time the drives the car. That errorcode is MAPsensor circuit error. Have any of you had the same problem and if so, how did you solve it ? I guess one solution could be to replace it with a MAPsensor that can handle the extra pressure from the turbo ( like from volvo,ford or equivilant car )...but this is the last solution so if you have any other answer please tell me !!

Thanks a million !

 

Ok, where can I find a 1way check valve to bleed of boost ?! and where do a find a missing link if that is required ?!

Thanks !

 

or put in a apexi with bigger injectors and do the afc hack

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by lunatic77 &raquo;</TD></TR><TR><TD CLASS="quote">HI,

My friend drives B16A1 CRX Vtec 1991 with a simple turbo setup, including a VAFC with all the correct settings according to users here and other forums. </TD></TR></TABLE>

I am unsure what your friend is running to control his fuel. Is this an AFC hack, or is this an FMU setup with an AFC to fine tune with?

Until you answer this question, any "answer" you are given is likely junk.

 

Hmm... dont really know what you mean by AFC hack or FMU setup with a AFC to finetune with ! Can you pls explain so my explination to you will be better ?!

What I know now is that he´s running original ECU and a AFC to tune the air...thats all I know.

Thanks a million in advance and I hope you stand my bad explinations

 

It doesn't sound like your friend is using the afc hack. If he was, he probably would already know what his problem is. I'm don't know a lot about it, but you can use a AFC and using a couple certain settings, the AFC will keep your ecu from seeing boost. The stock Map sensor and ecu can not see boost and work properly. You should be able to get the needed check valves at a local auto parts store along with some tubing to put it all together. Get 3-4 check valves. You can't use a missing link on that engine. The MAP sensor is seperate from the engine. My '92 teg's B16 was the same way with my MAP untill I switched to a '94 GSR throttle body, that has the map on top. Best bet would be to look into a quality engine management setup.....

AEM EMS

 

"Hi, I don't know anything about various forms of engine management employed on forced induction Hondas, but you should be running an AEM EMS because it costs a thousand dollars."

Great response

lunatic77... ask your friend exactly HOW his setup is supposed to work, and then tell us... or better yet have him come over and use your HT account and tell us. If he doesn't know how it works... then there is really nothing any of us can do for him short of asking him to educate himself on the subject (read Maximum Boost by Corky Bell and then come back with questions) or just roll his car into a shop and pay them to fix it.

 

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by J. Davis &raquo;</TD></TR><TR><TD CLASS="quote">"Hi, I don't know anything about various forms of engine management employed on forced induction Hondas, but you should be running an AEM EMS because it costs a thousand dollars."

Great response </TD></TR></TABLE>

Where did you go and pull that out of your ***. Just because I don't know all there is to know about the AFC hack, doesn't mean I don't know anything about various forms of engine management. Second, the EMS was because I bought one. I'm not saying everyone should get it. Next time read the post.

 

Hi,

Now I have a little more information about my friends car...

Mitsubishi 13C turbo
Volvo 850R 370cc injectors
V-AFC to control the air/fuel
AEM fuelpressure regulator
IVECO intercooler ( good up to 400 bhp )

Thats all I know...hope you can help me...he tried with another
MAP-sensor ( one from Bosch that is supposed to handle up to 22 psi )
but it error-coded as soon as he connected it into the car.

Right now he runs -37% between 1000-4000k and -35% between 5000-9000k
and if he doesnt floor it it works good and the car doesnt errorcode, but as soon
as he puts a little pressure on the car it gives errorcode 3 ( MAP sensor fault ).

He told me yesterday that he wanted to torch the car...but that was in heat of anger...but I really need some help to solve this....

all information or cooment that could help, pls tell me !

Thanks a million advance !

 

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<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XSIintegra &raquo;</TD></TR><TR><TD CLASS="quote">I'm don't know a lot about it, but you can use a AFC and using a couple certain settings, the AFC will keep your ecu from seeing boost. The stock Map sensor and ecu can not see boost and work properly. You should be able to get the needed check valves at a local auto parts store along with some tubing to put it all together. Get 3-4 check valves. </TD></TR></TABLE>

So, you admit you don't know anything about an AFC hack, and then advocate using check valves to run an AFC hack - which is the last thing in the world you want to do.

<TABLE WIDTH="90%" CELLSPACING=0 CELLPADDING=0 ALIGN=CENTER><TR><TD>Quote, originally posted by XSIintegra &raquo;</TD></TR><TR><TD CLASS="quote">Best bet would be to look into a quality engine management setup.....

AEM EMS </TD></TR></TABLE>

And your direct quote where you plug an EMS, which by deductive logic you know even less about than an AFC, since it is a much more complex piece of equipment and a waste of money for most cars.


lunatic77, a CEL 3 is because the AFC is returning too much MAP sensor signal to the ECU. Your friend needs to pull more fuel from the top end, -35% is too high for his setup. Taking more fuel out is *dangerous* and will cause him to run lean - to do this safely he should up his base fuel pressure to 50 psi and retune the AFC accordingly. Also make sure he's retarding the distributor 2-3 degrees.