s14a with gt3240@27psi

[s14nismo]

I decided to flow test my 'new' injectors today, I foolishly tried to skimp and bought some Venoms from ebay, after reading a thread on the sx forum about the vendor i bought mine from, i thought i'd better test them before starting the mapping,

Here's the result;







absolutely diabolically miss-matched!!!!

So be warned, steer clear of VENOM injectors, and particularly the ebay shop 'tlfsupra' !!!

So im back to a measly 640cc max flow, so until i can afford a set of nismo or Sard injectors the boost is gonna have to stay 'sensible'

[s14nismo]

Just a little clip of the engine running and revving after some initial tuning (sorry but poor quality due to my crappy phone!)

[rob@vems.co.uk]

Nicely done sir.

My SR20DE ran this weekend.  The head is off now for a little work

Rob

[s14nismo]

I managed to escape the house for a play with the SX today and took it for a quick spin without the wideband sensor fitted as Ive been

trying to communicate with terminal today to check my fresh air wideband readings and it seems to be connecting fine, but im just

getting some kind of encoded response, just a load of random symbols and numbers.

  Ive had it talking normally before, so have i done something wrong?

[rob@vems.co.uk]

Hmmm, not sure about that - cut and paste a bit if you can and I'll see if I can figure it out.

I fresh-air calibrated your sensor you know

Rob

[s14nismo]

Hmmm, not sure about that - cut and paste a bit if you can and I'll see if I can figure it out.

I fresh-air calibrated your sensor you know

Rob

 Yeah i just wanted to check for piece of mind really

When i typed-   Manmlp02, This is what it returned;

```PPPPPPPPP```˜˜˜˜˜˜˜˜˜`PpŒŒŒŒŒŒŒŒŒ``plllllllll``\ddddddddd``Xddddddddd:<T\\\\\\\\\:<PPPPPPPPPP:<HHHHHHHHHH:<@@@@@@@@@@000000000000(((((((((((((2<FPZ_#-2<KZi}–°±±¸¸¸¸¸¸¸¸¸±±±¸¸¸¸¸¸¸¸¸±±±¸¸¸¸¸¸¸¸¸¸¶¶¶¶¶¶¶¶¶¶¶¶¶¬©££££££££¬¬£™™™™™™™™‘‘‘‘‘‘‘‘‘‘‘‘‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚‚wwwwwwwwwwww(2<FPZ_#-2<KZi}–
 

[MWfire]

Maybe you use usb-rs232 adapter?

[s14nismo]

Yes im using a good quality USB-Serial adaptor, and i know its ok as its communicated before with terminal, and communication with MT is fine. it seems to understand my input as it only replies when i type a known command such as "man.. or hello".

[MWfire]

Try reupload firmware, i have simular problem, after reuploding firmware all work good.

[rob@vems.co.uk]

Please do not upload firmware when there is a problem with the serial communication.

[rob@vems.co.uk]

I think I've replicated it.

If I connect to the VEMS with terminal and type mll I get a load of 'noise' on the terminal screen - like you pasted earlier.

If you type Man you get Hello> then you type mll and get a formatted output.

Basically the typing of Man puts the VEMS into console mode where you can send mxx commands. to exit the console mode you need to type byebye or reset the unit.

If you are in console mode, then disconnect Terminal and then open MegaTune you will not get a connection, but you will once the ECU is powered back up.

Does that make any sense?

Rob

[Tcal]

And be sure that you type Man.
If you type man then vems does not want to communicate with you.

[s14nismo]

And be sure that you type Man.
If you type man then vems does not want to communicate with you.

lol  :I guess i'll be a bit more carefull with my grammar in future!! 
its communicating perfectly now

[s14nismo]

After getting the car running fairly smoothly im having trouble fine tuning the maps due to an unstable MAP pressure mainly at WOT and mid range RPMs, anybody got any suggestions how to smooth this out? im using the VEMS onboard MAP sensor (4bar).

  Here's a screenshot of datalog, MAP is the blue line in the top graph, which is affecting my duty cycle (white line in middle graph)

[rob@vems.co.uk]

Nasty looking fluctations there.  My first thought is regarding the boost controller setup.  Can that be easily taken out of the picture?  Disconnecting the power to the solenoid should result in none of the air being bled off which will mean that you have standard actuator control.

Are you using the PID or Alternate boost controller?

Rob