Notices
Scion tC 1G Forced Induction Turbo and supercharger applications...

Air Fuel Ratio? Install Injectors or not?

Thread Tools
 
Search this Thread
 
Old 09-28-2007, 09:48 PM
  #1  
Senior Member
10 Year Member
5 Year Member
SL Member
Thread Starter
 
jay_jay_n's Avatar
 
Join Date: Nov 2005
Location: Northridge, CA
Posts: 1,727
Default Air Fuel Ratio? Install Injectors or not?

Well i've had a zpi stage 1 kit for a few months now, and i barely got my injectors, i had a few issues with oil leaks and boost leaks omg thats a pain fixing and redoing etc.. freaken stupid oil pan lol..

well my question is i barely got my PLX Wideband installed yesterday and turned it on, i have not dynoed this car because i haven't had time or money to do so, and its been running great it basically was a stage 1 minus injectors , i have a e-manage blue with no tune and a profec-e01 boost controller.

I turned it on and it idled around 14 and when i would go WOT it went around 20 daym i'm leaning like crazy, well my question is should i put the rc 550cc injectors in or not, what would exactly happen since i don't have a tune will it at least compensate enough?

The reason i ask this is because i have a 6-7 hour drive that i'm doing tonight, and i've been fixing the oil leaks and boost leaks, and freaken exhaust leaks and installing new parts and i didn't realize how lean i've been. I kno i can try to play with the maps with my profec-e01 but i wouldnt even know where to start on how to tune it.

suggestions and help would be appreciated, and i know i will get it tuned as soon as i get funds to do so.

also i just got the DEI CRYO2 Intercooler Cooling system, would the cooler air effect my a/f even more?
jay_jay_n is offline  
Old 09-28-2007, 10:07 PM
  #2  
Senior Member
10 Year Member
5 Year Member
SL Member
Thread Starter
 
jay_jay_n's Avatar
 
Join Date: Nov 2005
Location: Northridge, CA
Posts: 1,727
Default

also anybody know if i can upload a map like lets say the basemap from dezods site for the emanage to my profec-e01 and then to the emanage? because i don't have the support tool.
jay_jay_n is offline  
Old 09-28-2007, 11:40 PM
  #3  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Mr_Meaty's Avatar
 
Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
Default

You would need the support tool.
If you had 440cc, I would say go for it, but iwth 550cc, I think your gonna need a tune to get it to run.
Mr_Meaty is offline  
Old 09-29-2007, 12:09 AM
  #4  
Senior Member
10 Year Member
5 Year Member
SL Member
Thread Starter
 
jay_jay_n's Avatar
 
Join Date: Nov 2005
Location: Northridge, CA
Posts: 1,727
Default

yeah I installed them n now I'm reading at10 in gonna street tune if not I'll change them back any body have an idea how much % i should do, first time tuning it lol
jay_jay_n is offline  
Old 09-29-2007, 12:39 AM
  #5  
Senior Member
10 Year Member
5 Year Member
SL Member
 
josh4201's Avatar
 
Join Date: Mar 2007
Location: Martinsburg, WV
Posts: 177
Default

WATCHING!!
josh4201 is offline  
Old 09-29-2007, 03:50 AM
  #6  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Mr_Meaty's Avatar
 
Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
Default

You just popped em in and your seeing 10afr at WOT? Or all the time? Cause I know my gauge does not read lower then 10 (then again, it does not read higher then 17!) so who knows how low it really is!
Mr_Meaty is offline  
Old 09-29-2007, 05:47 PM
  #7  
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
iTrader: (2)
 
etsnet's Avatar
 
Join Date: Sep 2005
Location: HMFIC Jensen Beach, FL
Posts: 3,314
Default

I think I'd rather run rich then lean. 10afr can be 8afr on the AEM if it's 10 flat I can bet it's the same for yours. Running too lean like that will kill your motor fast. Don't risk it, get a tune asap.
etsnet is offline  
Old 09-29-2007, 06:56 PM
  #8  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Mr_Meaty's Avatar
 
Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
Default

um...wouldn't 10 or 8 be running rich? so it would be safer then running 17 or 20 like he was, which would be lean?
Mr_Meaty is offline  
Old 09-29-2007, 07:43 PM
  #9  
Member
5 Year Member
SL Member
 
knight's Avatar
 
Join Date: Aug 2005
Location: Stockton , MO
Posts: 67
Default

Correct you are ,Mr Meaty.
knight is offline  
Old 09-29-2007, 07:56 PM
  #10  
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
iTrader: (2)
 
etsnet's Avatar
 
Join Date: Sep 2005
Location: HMFIC Jensen Beach, FL
Posts: 3,314
Default

Originally Posted by Mr_Meaty
um...wouldn't 10 or 8 be running rich? so it would be safer then running 17 or 20 like he was, which would be lean?
Yes 10 or 8 is richer (stil not super safe) but safer then being that lean at WOT.
etsnet is offline  
Old 10-01-2007, 08:12 PM
  #11  
Senior Member
10 Year Member
5 Year Member
SL Member
Thread Starter
 
jay_jay_n's Avatar
 
Join Date: Nov 2005
Location: Northridge, CA
Posts: 1,727
Default

well thx for the help guys actually my wot would be around 14 from what i tested and i drove fine there, scarry but i made it back in one piece, i had installed the injectors and i was at 10 and the car ran like shiet so i had to change them back to the stocks, is this normal? it was boggy as hell and i did check the wiring etc..

well the great thing is had a dyno run at the show for free, but no tune just a pic and vid of the run i'm gonna get the stuff uploaded but i was suprised how well i did with no tune and injectors at 8psi 220.91 whp!!, but i was losing at least 15hp because of a exhaust leak somewhere that is loud as hell.

what u guys think?
jay_jay_n is offline  
Old 10-01-2007, 08:29 PM
  #12  
Member
5 Year Member
SL Member
 
knight's Avatar
 
Join Date: Aug 2005
Location: Stockton , MO
Posts: 67
Default

Are you running an open dump off your waste gate? I beleive it's bogging because at 8 psi you need more fuel than your stock injectors can put out. If you are not an experienced tuner you NEED to get it tuned or start looking for a new block. Running 14 at WOT is very bad.
knight is offline  
Old 10-01-2007, 08:32 PM
  #13  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Angry_Celi_Guy's Avatar
 
Join Date: Mar 2007
Location: Temecula & Camp P
Posts: 477
Default

i feel sorry for ur engine
Angry_Celi_Guy is offline  
Old 10-01-2007, 09:10 PM
  #14  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Mr_Meaty's Avatar
 
Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
Default

Well, you were bogging AFTER you put in the injectors, right? So your bogging cause you dumping to much fuel.
One of the tunes I got are from a car with smaller injectors, so my car reads in the 10s and it boggs down. My original tune does not bog down. It's the larger injectors on a stage 0 with no tune.
You just have to get tuned. There is no way around it, no other solution, just do it!
Mr_Meaty is offline  
Old 10-01-2007, 10:07 PM
  #15  
Senior Member
10 Year Member
5 Year Member
SL Member
Thread Starter
 
jay_jay_n's Avatar
 
Join Date: Nov 2005
Location: Northridge, CA
Posts: 1,727
Default

yeah definitely getting it tuned just trying to fine time to get it tuned, u gonna go to HIN Vegas? and finnally meet me Mr. Meaty?, well i hope i can get it tuned this week, only problem is scheduling time, i wish there was a good tuner in my area.
jay_jay_n is offline  
Old 10-01-2007, 10:33 PM
  #16  
Senior Member
10 Year Member
5 Year Member
SL Member
 
malloynx's Avatar
 
Join Date: Oct 2006
Posts: 412
Default

Originally Posted by etsnet
Originally Posted by Mr_Meaty
um...wouldn't 10 or 8 be running rich? so it would be safer then running 17 or 20 like he was, which would be lean?
Yes 10 or 8 is richer (stil not super safe) but safer then being that lean at WOT.
dude, wtf are you talking about. a 10afr is retarted rich. even low 11's in rich for such little boost. it's like the blind leading the blind around here.

to the fella that is having problems. get yourself some 440's or so and run a return fuel setup. it's soo much easier to tune when you can adjust fuel pressure. i've seen people that are really good tune a motor on just fuel pressure alone (no engine management) that's if you really don't care about your timing.
malloynx is offline  
Old 10-01-2007, 10:57 PM
  #17  
Senior Member
10 Year Member
5 Year Member
SL Member
 
Mr_Meaty's Avatar
 
Join Date: Aug 2004
Location: VEGAS BABY!
Posts: 9,061
Default

I think etsnet clarified in his follup up post that it's safer to run 10afr rich then it is to run 20afr lean.
But yeah, 440s would probably work. I was gonan run 440s when I could not find a tuner, but I did, andI got 650!

I'm gonna try and make it, but it may not be till later in the evening cause I have some place to be at 5:00
Mr_Meaty is offline  
Old 10-02-2007, 09:06 PM
  #18  
Senior Member
10 Year Member
5 Year Member
Scikotics
SL Member
iTrader: (2)
 
etsnet's Avatar
 
Join Date: Sep 2005
Location: HMFIC Jensen Beach, FL
Posts: 3,314
Default

Originally Posted by Angry_Celi_Guy
i feel sorry for ur engine
x2


You ran 14afr at WOT and went on the dyno. Dude, you are gonna kill your motor. Try to stay out of boost until you can get a tune.
etsnet is offline  
Related Topics
Thread
Thread Starter
Forum
Replies
Last Post
cessblood
PPC: Engine / Drivetrain
3
09-15-2015 06:50 AM
nightfox915
Scion tC 1G Owners Lounge
8
04-17-2015 07:06 PM
darkshadowofxdeath
Scion tC 1G Forced Induction
7
02-11-2015 05:38 PM
TheRedBox
Scion xA/xB 1st-Gen Drivetrain & Power
15
07-09-2006 04:08 PM
TheRedBox
Scion xA/xB 1st-Gen Drivetrain & Power
31
12-02-2003 04:53 PM



Quick Reply: Air Fuel Ratio? Install Injectors or not?



All times are GMT. The time now is 06:46 PM.