VemsNewb

Discuss VEMS and other standalone ECUs
DuBistS4
Posts: 76
Joined: Sun Mar 10, 2013 8:32 pm
Location: Westchester NY

Re: VemsNewb

Post by DuBistS4 »

Having some lean spike issues when accelerating. How do I post these logs I wanna show you guys?
'94 UrS4 Red/Black
Vems
Lightly modded head

-Will
EDIGREG
Posts: 1219
Joined: Tue Feb 26, 2013 12:50 am

Re: VemsNewb

Post by EDIGREG »

click the 'upload attachment' tab when making a post and attach the log.

Have you adjusted your accel enrich?
Ed
Image
DuBistS4
Posts: 76
Joined: Sun Mar 10, 2013 8:32 pm
Location: Westchester NY

Re: VemsNewb

Post by DuBistS4 »

Tried uplaoding that way it just told that the attachment wasn't allowed. And yes I have, but it seems everytime I adjust it the spike will happen directly after accel enrich ends.
'94 UrS4 Red/Black
Vems
Lightly modded head

-Will
DuBistS4
Posts: 76
Joined: Sun Mar 10, 2013 8:32 pm
Location: Westchester NY

Re: VemsNewb

Post by DuBistS4 »

Got it. It's easy to see the spikes they are right after I go WOT.
Attachments
v3.3_u003894-2013.03.27-21.21.28.vemslog
(40 KiB) Downloaded 1096 times
'94 UrS4 Red/Black
Vems
Lightly modded head

-Will
EDIGREG
Posts: 1219
Joined: Tue Feb 26, 2013 12:50 am

Re: VemsNewb

Post by EDIGREG »

I just took a quick glance, but you just need more fuel in those load cells. 4,000-4,500rpm range from 200kPa-250kPa. Leans out in those areas consistently. And you can also bump down the accel enrichment.
Ed
Image
DuBistS4
Posts: 76
Joined: Sun Mar 10, 2013 8:32 pm
Location: Westchester NY

Re: VemsNewb

Post by DuBistS4 »

Thanks alot Ed. Yea, I just loaded up on the accel enrich to see if that was the issue. I'll up the VE in that area and retest.
'94 UrS4 Red/Black
Vems
Lightly modded head

-Will
DuBistS4
Posts: 76
Joined: Sun Mar 10, 2013 8:32 pm
Location: Westchester NY

Re: VemsNewb

Post by DuBistS4 »

Hey guys ever since I owned the car I have been wondering about my slightly low vacc. at idle. With the Vems it tells me i have 44 to 45 kpa at an 850rpm idle. My compression is in the mid 170's. Leak down is 6 to 3% on all cylinders. I have seen other cars on vems pull 42 to 39 kpa at a similar idle speed. I also plugged up the nipple on the bottom of the intake to rule out the pcv system with no change. My isv has always been kinda flakey, could that be the problem? What are your idle vacc. at?
'94 UrS4 Red/Black
Vems
Lightly modded head

-Will
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