RB25DET S13

[Butchs13]

Hi all,

Info on my project can be found here:

http://www.skylineowners.com/forum/showthread.php?t=58687

Just starting to lean about engine mapping so will defo have loads of questions to ask (sorry).
Got a VEMS wideband and have done a little playing.

http://www.skylineowners.com/forum/showthread.php?p=633413#post633413

What do you think??,

What are the dips in rpm??

Cheers

Chris

[rob@vems.co.uk]

Hi all,

Info on my project can be found here:

http://www.skylineowners.com/forum/showthread.php?t=58687

Just starting to lean about engine mapping so will defo have loads of questions to ask (sorry).
Got a VEMS wideband and have done a little playing.

http://www.skylineowners.com/forum/showthread.php?p=633413#post633413

What do you think??,

What are the dips in rpm??

Cheers

Chris

Nice looking project - the RB lump makes the best noises.

I think those dips in RPM are exactly the same as Maff has been having.
We've only seen this in on Nissan rev counters, so we're going to have to take a look at what's happening, work out why its happening, and sort out a fix.  Hoepfully I'll be able to scope a rev run at the same time as I datalog it, and work out if its just a case of changing the RPM count and/or divider.

Looking at your lambda curve you have a pretty good AFR curve there, 13.x:1 through to 12.x:1 at high boost and RPM

[rob@vems.co.uk]

We now have a beta release that should solve the RPM drop out issues, I'll be testing it tonight and then trying to figure out how to write the Instruction manual!

Rob

[Butchs13]

Ah i look forward to the release

Any thoughts on my possessed guage flipping from AFR to Lambda. do you want a vid of it or a dump of the program or it sending back?

It not that much of an issue (when using a laptop) but there is really no point of having it in the car as i cant read the display when driving.

[rob@vems.co.uk]

Good point on the AFR flippery...
Can you bung me an email ( rob@vems.co.uk ) with the serial number and a brief explaination of what its doing (just cut and paste what you've written elsewhere) and I'll get something sorted

Rob