VEMS Community Forum

Members => Projects & Installs => Topic started by: Butchs13 on April 18, 2007, 12:43:05 PM

Title: RB25DET S13
Post by: Butchs13 on April 18, 2007, 12:43:05 PM
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
Title: Re: RB25DET S13
Post by: [email protected] on April 18, 2007, 01:55:11 PM
Quote from: Butchs13 on April 18, 2007, 12:43:05 PM
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
Title: Re: RB25DET S13
Post by: [email protected] on April 25, 2007, 01:22:05 PM
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
Title: Re: RB25DET S13
Post by: Butchs13 on May 04, 2007, 08:32:59 AM
Ah i look forward to the release ;D

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.
Title: Re: RB25DET S13
Post by: [email protected] on May 04, 2007, 09:54:34 AM
Good point on the AFR flippery...
Can you bung me an email ( [email protected] ) 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