123Ignition setting Map Curve (Bluetooth) |
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
123Ignition setting Map Curve (Bluetooth) |
9144me2enjoy |
Dec 28 2019, 05:55 PM
Post
#1
|
Member Group: Members Posts: 310 Joined: 19-June 18 From: Oregon Member No.: 22,240 Region Association: Pacific Northwest |
I’ve followed the past postings on the 123Ignition and was able to get mine (Bluetooth Version) installed in my 914 with a Raby 2270 engine. My question is I’ve never messed with the Map Curve Settings, I’m still getting some misfires when the car is cold until it warms up. I’m not sure if I need to adjust the Map settings to address this problem or help on reaching peak performance? Thanks for any suggestions. I’ve attached a couple of current pics of the settings for the Centrifugal Curve and Map Curve. Thanks
Attached thumbnail(s) |
9144me2enjoy |
Dec 28 2019, 05:56 PM
Post
#2
|
Member Group: Members Posts: 310 Joined: 19-June 18 From: Oregon Member No.: 22,240 Region Association: Pacific Northwest |
Centrifugal Curve Pic
Attached thumbnail(s) |
wndsrfr |
Dec 28 2019, 08:32 PM
Post
#3
|
Senior Member Group: Members Posts: 1,436 Joined: 30-April 09 From: Rescue, Virginia Member No.: 10,318 Region Association: MidAtlantic Region |
I'm on a Raby 2316 with 9560 cam & SDS fuel & ignition with ITB's so horrible MAP signal, gave up on using MAP and went with TPS only.
The SDS uses an excel spreadsheet format to compute fueling and spark advance based on temperature, TPS value and RPM. Very simple. I'm advancing spark faster than your centrifugal curve shows--I'll try to paste from the excel column below: RPM IGN 500 10 750 10 1000 14 1250 14 1500 15 1750 17 2000 21 2250 24 2500 27 2750 30 3000 30 3250 30 3500 30 3750 30 4000 30 4250 30 4500 30 4750 30 5000 30 5250 30 5500 30 5750 30 6000 30 6250 29 6500 29 6750 28 Wow, it worked....the IGN values are degrees BTDC just the same as your centrifugal advance values..(I have fuel cut at 6750 as a rev limiter with this system). IF you're on a single Throttle body you can probably be ok with MAP signal but if it's ITB's you'll get stumble at part throttle due to the choppy signal... |
GregAmy |
Dec 29 2019, 09:55 AM
Post
#4
|
Advanced Member Group: Members Posts: 2,379 Joined: 22-February 13 From: Middletown CT Member No.: 15,565 Region Association: North East States |
I'm on a Raby 2316 with 9560 cam & SDS fuel & ignition with ITB's so horrible MAP signal, gave up on using MAP and went with TPS only. You could pull a vac line from all four and "tee" them together for a more-reliable MAP signal. Alternatively, I've seen them interconnected to a common small vac canistor from which the signal is sourced. |
Lo-Fi Version | Time is now: 25th September 2024 - 11:02 PM |
All rights reserved 914World.com © since 2002 |
914World.com is the fastest growing online 914 community! We have it all, classifieds, events, forums, vendors, parts, autocross, racing, technical articles, events calendar, newsletter, restoration, gallery, archives, history and more for your Porsche 914 ... |