Beta Testing 1000cc Injectors - Miata Turbo Forum - Boost cars, acquire cats.

Welcome to Miataturbo.net   Members
 


Engine Performance This section is for discussion on all engine building related questions.
Sponsored by:
Sponsored by:

Reply
 
 
 
LinkBack Thread Tools Search this Thread
Old 01-12-2009, 03:50 PM   #1
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default Beta Testing 1000cc Injectors

We have a beta set of 1000cc in my car. High impedance plug and play. Originally it was just going to be a base tune to see how they ran due to my WRX not having the mods to need 1000cc's.
Im running the stock TD04 Turbo. 4in TurboXS DP to 3in Invidia catback and devils own water/meth are really the only engine mods I have.
Well my tuner came up, I dropped them in and we went at it. After it was all said and done, we had a full tune and i could not tell the difference from before and after. It idles perfect, mid 11's AFR accross the board. We are leaving them in my car to continue testing and will check the tune in a week or so.
This is great news as it means we are closer to releasing the product.
Just figured I would keep everyone informed.
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 03:57 PM   #2
Tour de Franzia
iTrader: (6)
 
hustler's Avatar
 
Join Date: Jun 2006
Location: Republic of Dallas
Posts: 29,114
Total Cats: 351
Default

11:1 AFR at idle isn't exactly "perfect."
hustler is offline   Reply With Quote
Old 01-12-2009, 03:59 PM   #3
Senior Member
iTrader: (19)
 
Join Date: Oct 2007
Location: MoCo, MD
Posts: 703
Total Cats: 0
Default

Need a Miata guinea pig? I just picked up a set of 750cc from you guys, and would be happy to trade them before they're installed
pschmidt is offline   Reply With Quote
Old 01-12-2009, 03:59 PM   #4
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,323
Total Cats: 1,920
Default

Quote:
Originally Posted by Deatschwerks View Post
It idles perfect, mid 11's AFR accross the board.
Patsmx5 will love 'em.
Joe Perez is offline   Reply With Quote
Old 01-12-2009, 04:14 PM   #5
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default

Quote:
Originally Posted by hustler View Post
11:1 AFR at idle isn't exactly "perfect."
Im not trying to compare my car to a miata whatsoever, 11's is where my car likes to be. Whats the best AFR range for a Miata
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 04:18 PM   #6
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Joe Perez View Post
Patsmx5 will love 'em.
Sounds good to me! But I'm an odd ball out, I'd want them in low ohm. And I've already got a set of 1000cc low ohm injectors waiting for me when I have the money.

FWIW, most of the panzies on this board idle around 14:1. I have to run mine at least 12.5:1 or richer or my idle isn't right. But I get maximum vacuum at idle in the high 11's.

And 1000cc injectors at the factory 3bar pressure at idle will result in overly rich idle, at least 11:1.
patsmx5 is offline   Reply With Quote
Old 01-12-2009, 04:19 PM   #7
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default

Quote:
Originally Posted by pschmidt View Post
Need a Miata guinea pig? I just picked up a set of 750cc from you guys, and would be happy to trade them before they're installed
We have only 2 sets right now, both are in cars. Im not sure when they will be released yet. When you put the 750's in, lemme know how it goes. I like to stay in contact with my customers
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 04:21 PM   #8
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default

Quote:
Originally Posted by patsmx5 View Post
Sounds good to me! But I'm an odd ball out, I'd want them in low ohm. And I've already got a set of 1000cc low ohm injectors waiting for me when I have the money.

FWIW, most of the panzies on this board idle around 14:1. I have to run mine at least 12.5:1 or richer or my idle isn't right. But I get maximum vacuum at idle in the high 11's.

And 1000cc injectors at the factory 3bar pressure at idle will result in overly rich idle, at least 11:1.
Yes it is a little rich at idle. I have noticed a lot of you guys like the Low z Injectors.
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 04:25 PM   #9
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Deatschwerks View Post
Yes it is a little rich at idle. I have noticed a lot of you guys like the Low z Injectors.
Actually, a lot of guys here like 550cc high ohm injectors that are plug in play. Most here run MS1 and it doesn't support low ohm injectors. (actually it does, but everyone runs the 'high-res' code and then it no longer supports the PWM needed to drive low ohm injectors)

I'd say no more than 5% of the board runs low ohm injectors without resistors.

Of course I like the low z injectors because with my MS2E, I can run them. So if I wanna run large injectors, I can without sacrificing idle quality. Even though I'm gonna tune it rich anyways.
patsmx5 is offline   Reply With Quote
Old 01-12-2009, 04:33 PM   #10
Boost Czar
iTrader: (61)
 
Braineack's Avatar
 
Join Date: May 2005
Location: Chantilly, VA
Posts: 72,872
Total Cats: 1,790
Default

and you can always add the PWM daughterboard to run low-ohm injectors with Hi-Res code :P
Braineack is offline   Reply With Quote
Old 01-12-2009, 04:37 PM   #11
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default

Id like to get into tuning with MS. My tuner uses an open source program on my subaru, and ill be running Haltech on my RX7. But i was considering buying a Datsun 510, or 240z as my next project.
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 04:38 PM   #12
Former Vendor
Thread Starter
 
Join Date: Oct 2008
Location: Oklahoma City
Posts: 395
Total Cats: 4
Default

If i was a smaller guy i would love to get a Miata, but im 300lbs, and i dont think it would be really comfortable for me, although ive never been in one.
Deatschwerks is offline   Reply With Quote
Old 01-12-2009, 04:40 PM   #13
Senior Member
iTrader: (1)
 
Join Date: Sep 2007
Location: Trenton, NJ
Posts: 1,125
Total Cats: 0
Default

Quote:
Originally Posted by patsmx5 View Post
FWIW, most of the panzies on this board idle around 14:1. I have to run mine at least 12.5:1 or richer or my idle isn't right. But I get maximum vacuum at idle in the high 11's.
.

Mine runs at about 12.5 or richer at idle. Anything leaner than that and the RPM's bob up and down. Im running rx7 550's.
ArtieParty is offline   Reply With Quote
Old 01-12-2009, 04:40 PM   #14
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Braineack View Post
and you can always add the PWM daughterboard to run low-ohm injectors with Hi-Res code :P
Or just upgrade to MS2.
patsmx5 is offline   Reply With Quote
Old 01-12-2009, 04:51 PM   #15
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

I run about .8ms fuel pulses at idle on my 550s. that's what I love about P&H low impedance injectors.
y8s is offline   Reply With Quote
Old 01-12-2009, 05:16 PM   #16
Supporting Vendor
iTrader: (31)
 
Savington's Avatar
 
Join Date: Nov 2006
Location: Sunnyvale, CA
Posts: 14,366
Total Cats: 1,327
Default

Does peak and hold really save that much fuel? I am idling high-imp 460s at about 13.3:1 with 1.76-1.78ms pulses.
Savington is offline   Reply With Quote
Old 01-12-2009, 05:20 PM   #17
Elite Member
iTrader: (15)
 
patsmx5's Avatar
 
Join Date: Aug 2007
Location: Houston, TX
Posts: 8,797
Total Cats: 248
Default

Quote:
Originally Posted by Savington View Post
Does peak and hold really save that much fuel? I am idling high-imp 460s at about 13.3:1 with 1.76-1.78ms pulses.
It's like the difference between turning on a faucet valve that takes 9 turns vs. a 90* "T" valve. More or less. FWIW, NB's run a constant 62 PSI fuel pressure, even at idle, so we will run less PW to get the same amount of fuel at idle.
patsmx5 is offline   Reply With Quote
Old 01-12-2009, 05:46 PM   #18
y8s
2 Props,3 Dildos,& 1 Cat
iTrader: (8)
 
y8s's Avatar
 
Join Date: Jun 2005
Location: Fake Virginia
Posts: 19,038
Total Cats: 407
Default

Quote:
Originally Posted by Savington View Post
Does peak and hold really save that much fuel? I am idling high-imp 460s at about 13.3:1 with 1.76-1.78ms pulses.
It's not so much about saving fuel, it's more about not injecting twice as much as you need. I idle at 14.5:1 with the 550s.
y8s is offline   Reply With Quote
Old 01-12-2009, 07:36 PM   #19
Boost Pope
iTrader: (8)
 
Joe Perez's Avatar
 
Join Date: Sep 2005
Location: Delicious and Moist.
Posts: 26,323
Total Cats: 1,920
Default

Quote:
Originally Posted by Savington View Post
Does peak and hold really save that much fuel? I am idling high-imp 460s at about 13.3:1 with 1.76-1.78ms pulses.
In the OEM world, lo-z injectors are primarily an emissions thing. They permit ultra-precise control at very low pulsewidths, such as idle.

In the performance world, the primary advantage to lo-z injectors is that they allow you to run silly-huge sizes and still maintain idle in the mid to high 14s. You put put hi-z 750 or 1000cc injectors in, and you'll just have to idle in the 10s or 11s.
Joe Perez is offline   Reply With Quote
 
 
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Project Gemini - Turbo Civic on the Cheap Full_Tilt_Boogie Build Threads 58 12-13-2017 10:04 PM
Changing from 460cc to flow force 610cc in diypnp 90 Turbo MEGAsquirt 19 10-19-2015 04:23 PM
Back to Stock Part Out!! Turbo Parts, MS2 Enhanced 01-05, Suspension, and MOAR! StratoBlue1109 Miata parts for sale/trade 16 10-02-2015 10:39 AM
Going back to stock. Need some 1.6 parts. Trent WTB 2 10-01-2015 01:15 PM
Time to start learning and play with tuning The Gleas MEGAsquirt 3 10-01-2015 10:30 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -4. The time now is 04:21 AM.