Idle issues after installing 550cc injectors MS3x
03-28-2013, 09:08 PM
#1
Junior Member
Thread Starter
Join Date: Feb 2013
Location: Baltimore, MD
Posts: 76
Total Cats: 0
Idle issues after installing 550cc injectors MS3x
See attached tune and data log
The car starts and idles but idles rich and likes to drop way below 850rpm.
I have tried to figure out the injector dead time... but I bought some cheap ones off ebay that didn't give any of that info.
They are rebuild denso 550cc's.. but besides that... I don't know much more.
I have also tried playing with the accel pump settings...
The car starts and idles but idles rich and likes to drop way below 850rpm.
I have tried to figure out the injector dead time... but I bought some cheap ones off ebay that didn't give any of that info.
They are rebuild denso 550cc's.. but besides that... I don't know much more.
I have also tried playing with the accel pump settings...
Reply
0
0
03-29-2013, 10:09 AM
#5
Boost Czar
iTrader: (62)
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,488
Total Cats: 4,077
were these injectors cleaned? old rx7 injectors? going by your fuel map, it looks like you're barely injecting fuel at idle.
yeah. 1.6ms at idle is probably as fast as these can cycle, and youre still at 11.0:1. either the AFR settings are bad, or one or two or three or four of these are just dumping in fuel at idle.
yeah. 1.6ms at idle is probably as fast as these can cycle, and youre still at 11.0:1. either the AFR settings are bad, or one or two or three or four of these are just dumping in fuel at idle.
Reply
0
0
03-29-2013, 10:29 AM
#6
Tour de Franzia
iTrader: (6)
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,085
Total Cats: 375
were these injectors cleaned? old rx7 injectors? going by your fuel map, it looks like you're barely injecting fuel at idle.
yeah. 1.6ms at idle is probably as fast as these can cycle, and youre still at 11.0:1. either the AFR settings are bad, or one or two or three or four of these are just dumping in fuel at idle.
yeah. 1.6ms at idle is probably as fast as these can cycle, and youre still at 11.0:1. either the AFR settings are bad, or one or two or three or four of these are just dumping in fuel at idle.
Reply
0
0
03-29-2013, 11:18 AM
#7
Junior Member
Thread Starter
Join Date: Feb 2013
Location: Baltimore, MD
Posts: 76
Total Cats: 0
Here is the link to the injectors
Mazda Miata 1 8L Set of 4 550cc Direct Fit Fuel Injectors | eBay
I'm beginning to regret buying them
Mazda Miata 1 8L Set of 4 550cc Direct Fit Fuel Injectors | eBay
I'm beginning to regret buying them
Reply
0
0
Thread
Thread Starter
Forum
Replies
Last Post
