General Miata Chat A place to talk about anything Miata
View Poll Results: RX7 Injector idle quality
Great
53.85%
A little lumpy
46.15%
Seriously lumpy
0
0%
Won't idle
0
0%
Voters: 13. You may not vote on this poll

RX-7 Injector idle quality?

Thread Tools
 
Search this Thread
 
Old 06-13-2007, 02:06 PM
  #1  
Elite Member
Thread Starter
iTrader: (14)
 
jayc72's Avatar
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,908
Total Cats: 1
Default RX-7 Injector idle quality?

What is the idle quality like with your RX7 injectors?

A description of which ECU and which injectors would be good too!
jayc72 is offline  
Old 06-13-2007, 02:12 PM
  #2  
Elite Member
Thread Starter
iTrader: (14)
 
jayc72's Avatar
 
Join Date: Mar 2006
Location: Edmonton, AB
Posts: 4,908
Total Cats: 1
Default

Link ECU, high impedance 460's that were flow tested.

After ******* about with the link Injector offset, master fuel and zf100 I can get a pretty decent idle that is a little lumpy. I do have to run things pretty rich to get it smooth.
jayc72 is offline  
Old 06-13-2007, 02:16 PM
  #3  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

460s, baby smooth @ 15:0-14.5:1 with MS.
Braineack is offline  
Old 06-13-2007, 02:17 PM
  #4  
Ben
Supporting Vendor
iTrader: (33)
 
Ben's Avatar
 
Join Date: Jul 2006
Location: atlanta-ish
Posts: 12,659
Total Cats: 134
Default

Pretty decent with the high z 550s idling rich. Not as good as my RC 440s. But good enough.
__________________
Chief of Floor Sweeping, DIYAutoTune.com & AMP EFI
Crew Chief, Car Owner & Least Valuable Driver, HongNorrthRacing

91 Turbo | 10AE Turbo | 01 Track Rat | #323 Mazda Champcar

Originally Posted by concealer404
Buy an MSPNP Pro, you'll feel better.
Ben is offline  
Old 06-13-2007, 02:29 PM
  #5  
Senior Member
iTrader: (12)
 
sbrian2's Avatar
 
Join Date: Nov 2005
Location: Murfreesboro, TN
Posts: 595
Total Cats: 3
Default

High ohm 460's on TEC3 wired full sequential. Idles great 14.7-15.0.
sbrian2 is offline  
Old 06-13-2007, 06:25 PM
  #6  
:(
iTrader: (7)
 
magnamx-5's Avatar
 
Join Date: Jul 2006
Location: nowhere
Posts: 8,255
Total Cats: 4
Default

I think my aic settings need to be tweaked abit. MS and high impedance 460's, hopefully the cleaned and flowed 550's will do better.
magnamx-5 is offline  
Old 06-14-2007, 06:01 AM
  #7  
jif
Junior Member
 
jif's Avatar
 
Join Date: Mar 2007
Location: Auckland, NZ
Posts: 49
Total Cats: 0
Default

for the 6 yrs up until this morning, idled pretty good - rx7 550cc hi-z, link, 800rpm idle and ~15:1 AFR (or leaner, if you wanted) ...

both cold starts today tho... runs off the peg rich until warmed up, had to reduce master fuel from 87 to 77?! Runs fine after that (after MF set back to 87)... dunno WTF is up with that !!
jif is offline  
Old 06-14-2007, 08:54 AM
  #8  
Boost Czar
iTrader: (62)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 79,493
Total Cats: 4,080
Default

does LINK handle cold starts? there should be cold-start enrichment values so you run about 12:1 or so untill the engine is closer to 70°C
Braineack is offline  
Old 06-14-2007, 09:56 AM
  #9  
Elite Member
iTrader: (3)
 
Pitlab77's Avatar
 
Join Date: Dec 2004
Location: Houston
Posts: 2,914
Total Cats: 5
Default

On the turbo car I had:

Mk1 LINK
RX7 S5 440's that were cleaned and tested to more than 440 around 450cc's
Pitlab77 is offline  
Old 06-14-2007, 02:38 PM
  #10  
Senior Member
iTrader: (7)
 
Jefe's Avatar
 
Join Date: Mar 2005
Location: VT
Posts: 939
Total Cats: 0
Default

Originally Posted by jif
for the 6 yrs up until this morning, idled pretty good - rx7 550cc hi-z, link, 800rpm idle and ~15:1 AFR (or leaner, if you wanted) ...

both cold starts today tho... runs off the peg rich until warmed up, had to reduce master fuel from 87 to 77?! Runs fine after that (after MF set back to 87)... dunno WTF is up with that !!
Bad AIT or coolant sensor?
Jefe is offline  
Old 06-14-2007, 10:54 PM
  #11  
jif
Junior Member
 
jif's Avatar
 
Join Date: Mar 2007
Location: Auckland, NZ
Posts: 49
Total Cats: 0
Default sllliightly low battery...

Originally Posted by Jefe
Bad AIT or coolant sensor?
hmm... charging the battery overnight fixed it (getting into winter down here) ... go figure

Wild *** Guess #1 ... inj voltage correction is way to aggressive...

anyway, all good now
jif is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
Full_Tilt_Boogie
Build Threads
84
04-12-2021 04:21 PM
StratoBlue1109
Miata parts for sale/trade
21
09-30-2018 01:09 PM
90 Turbo
MEGAsquirt
19
10-19-2015 03:23 PM
Trent
WTB
2
10-01-2015 12:15 PM
The Gleas
MEGAsquirt
3
10-01-2015 09:30 AM



Quick Reply: RX-7 Injector idle quality?



All times are GMT -4. The time now is 04:27 PM.