VVT MAP
#4
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Have you actually used either of those maps? I've actually tuned a full-power N/A VVT target table, and it looks nothing like either of the maps you've posted. I suspect both of those maps will also cause low-speed driveability issues, since you have requested significant amounts of cam advance at low vacuum (including in overrun).
#5
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Midtenn, this thread has all the info you want.
the thread where Savington asks a lot of really, really dumb questions. - Miata Turbo Forum - Turbo Kitten is watching you test compression.
My final settings are in post 133. Most of the settings are the same between Series 1 and EMS-4, but a few important ones are different. You'll need to tweak some stuff based on how many teeth your trigger wheel has and how you want the target advance map to display things. For the EMS-4, you'll need to invert the VVC#1 error table if you want to use the Series 1 target maps (47 = full retard, 0 = full advance), or you'll want to invert the VVC#1 output if you want to go the other way (0=full retard, 47 = full advance). I typically just invert the error table and use 47 as full retard.
For the base duty table, every car is a little different, but 30% should get you in the ballpark. If you find that the car isn't hitting VVC targets or if it's constantly drifting back towards full retard, you may need to raise it a few percent across the board.
If you're using our 12+1 trigger wheel, shoot me a PM and I'll provide some more detailed settings specific to the EMS-4 and our wheel. It's worth mentioning that my EMS-4 PnP basemaps have all of this stuff set up properly out of the box
the thread where Savington asks a lot of really, really dumb questions. - Miata Turbo Forum - Turbo Kitten is watching you test compression.
My final settings are in post 133. Most of the settings are the same between Series 1 and EMS-4, but a few important ones are different. You'll need to tweak some stuff based on how many teeth your trigger wheel has and how you want the target advance map to display things. For the EMS-4, you'll need to invert the VVC#1 error table if you want to use the Series 1 target maps (47 = full retard, 0 = full advance), or you'll want to invert the VVC#1 output if you want to go the other way (0=full retard, 47 = full advance). I typically just invert the error table and use 47 as full retard.
For the base duty table, every car is a little different, but 30% should get you in the ballpark. If you find that the car isn't hitting VVC targets or if it's constantly drifting back towards full retard, you may need to raise it a few percent across the board.
If you're using our 12+1 trigger wheel, shoot me a PM and I'll provide some more detailed settings specific to the EMS-4 and our wheel. It's worth mentioning that my EMS-4 PnP basemaps have all of this stuff set up properly out of the box
#9
Former Vendor
iTrader: (31)
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 15,442
Total Cats: 2,099
Different strokes for different folks. My brain works in KPAa/Fahrenheit/gasoline AFR, so that's how I tune. Some people like PSIg/Centigrade/Lambda. The Japanese like their KG/CM^2 gauges which are almost BAR but not quite. I met a tuner this week at AEM while I was getting factory training on the new Infinity EMS systems who says he prefers everything in BAR and lambda.
Tomayto, tomahto.
Tomayto, tomahto.
#11
Different strokes for different folks. My brain works in KPAa/Fahrenheit/gasoline AFR, so that's how I tune. Some people like PSIg/Centigrade/Lambda. The Japanese like their KG/CM^2 gauges which are almost BAR but not quite. I met a tuner this week at AEM while I was getting factory training on the new Infinity EMS systems who says he prefers everything in BAR and lambda.
Tomayto, tomahto.
Tomayto, tomahto.
Thread
Thread Starter
Forum
Replies
Last Post
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM