max hp w/SE injectors?
#1
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
max hp w/SE injectors?
I've searched and searched and can't seem to find any of the answers I am looking for. What is the maximum amount of hp the injectors can handle without leaning out the engine? I am looking into doing a M-90 or M-62 SC system, and am shooting for ~250hp. Will the stock injectors if cleaned and flow tested handle this much power, or do I have to drill 2 new injectors in? If I do have to add a pair of injectors, what size?
I'm sure there are some guys who have the answer to this like Peejay, Directfreak, MikeP-28... etc?
Daryl
I'm sure there are some guys who have the answer to this like Peejay, Directfreak, MikeP-28... etc?
Daryl
#3
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
ok.. so what is the MAX hp on the 13B 6port with the stock injectors? gimme a ballpark so I dont get too close to it. I do NOT want to run risk of leaning out .
#5
Old [Sch|F]ool
For a N/A, max HP at 85% duty cycle with 680's is about 195hp. With 720's, about 210hp.
Max7's research suggests that all '84 had 680's and all '85 had 720's.
With two 440's per rotor (like stock FC N/A) it's about 260hp. With two 550's (stock FC Turbo) it's about 325hp.
Note that these figures are for N/A engines - a supercharged engine will need to run a bit richer for the same HP so you'll want even more cushion room.
Max7's research suggests that all '84 had 680's and all '85 had 720's.
With two 440's per rotor (like stock FC N/A) it's about 260hp. With two 550's (stock FC Turbo) it's about 325hp.
Note that these figures are for N/A engines - a supercharged engine will need to run a bit richer for the same HP so you'll want even more cushion room.
#6
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
ok thanks purple and peejay .. so what I should do is pick up a second set of 2 - 680cc injectors and run them as well. Then I should have no problems with too small of injectors right? Will the GSL-SE ECU handle 2 more injectors? If I am planning on getting a Haltech F5 ECU and getting rid of the AFM and running a total of 4 - 680cc injectors, what problems will I run into with boost? Oh, and how much boost do you recommend I run? I am thinking between 5 and 10 psi, most likely near 5 for now. If I was to run 10psi, would I have to advance or retard the timing?
Keep in mind I have the heavy hi comp 9.4:1 rotors. I think 11.5:1 a/f ratio should be sufficient.. right?
Daryl
Keep in mind I have the heavy hi comp 9.4:1 rotors. I think 11.5:1 a/f ratio should be sufficient.. right?
Daryl
#7
Old [Sch|F]ool
Originally posted by hotty
Will the GSL-SE ECU handle 2 more injectors?
Will the GSL-SE ECU handle 2 more injectors?
The stock AFM runs out of airflow about the same time it runs out of injector, so if you want to keep the stock ECU you might just want to get a second AFM and ECU.
Alternatively just get a T2 ECU, AFM, and injectors... apparently the stock injection runs to like 10:1 AFR when under boost or over 3800rpm. (So does the N/A ECU but it uses a smaller AFM/injectors)
Trending Topics
#8
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
so if i was to get a T2 ecu, afm, injectors and rip out the stock SE ecu and injectors... i wouldnt need a haltech f5 ecu?
if thats true.. that would be SWEET..
if thats true.. that would be SWEET..
#10
-SE with Mods
iTrader: (1)
Join Date: Jul 2001
Location: Ohio, Columbus
Posts: 562
Likes: 0
Received 0 Likes
on
0 Posts
On paper you could but I could never get the "factory set up" to work right on another car. I got sick of my car always running like crap and installed the E6K. It runs so much better now. So unless you want to try and succeed where others have failed; give it a try. Also with a E6K or E6X you can retard the timing under boost.
#11
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
thanks paul.. also.. is there a way to retard the timing with the stock ECU or with the stock setup at all? The E6X/K are quite pricey, I'd much rather not spend that much money right now.
#13
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
ok sounds good, thanks again paul. I think I am going to go with the haltech F5 ecu still because its not so expensive and you dont need an afm, and can run more injectors with it. Are SE injectors high impedance or low impedance?
#14
Admitted Sevenaholic
Join Date: Feb 2001
Location: Ashland, OH
Posts: 1,910
Likes: 0
Received 0 Likes
on
0 Posts
Can you use the F5 as a standalone?
From the web....
The HALTECH F5 is a supplementary fuel injector computer designed to control the fuel delivery of an additional injector or injectors fitted to an engine’s fuel system as part of an after-market turbocharger or supercharger installation. Used as piggy back computer to trigger secondary injectors while still using stock ecu.
From the web....
The HALTECH F5 is a supplementary fuel injector computer designed to control the fuel delivery of an additional injector or injectors fitted to an engine’s fuel system as part of an after-market turbocharger or supercharger installation. Used as piggy back computer to trigger secondary injectors while still using stock ecu.
#15
Rotary Enthusiast
Thread Starter
Join Date: Oct 2001
Location: T.O
Posts: 898
Likes: 0
Received 0 Likes
on
0 Posts
I wasnt going to use the F5 as standalone no. I was going to use it with the stock ECU unless i can run just a stock T2 ecu to do the same job. I think the haltech f5 and the gsl-se ecu in conjunction would be more tuneable as opposed to the t2 ecu.
I would still like to know if SE injectors are high or low impedance.
I would still like to know if SE injectors are high or low impedance.
#18
Originally posted by hotty
I wasnt going to use the F5 as standalone no. I was going to use it with the stock ECU unless i can run just a stock T2 ecu to do the same job. I think the haltech f5 and the gsl-se ecu in conjunction would be more tuneable as opposed to the t2 ecu.
I would still like to know if SE injectors are high or low impedance.
I wasnt going to use the F5 as standalone no. I was going to use it with the stock ECU unless i can run just a stock T2 ecu to do the same job. I think the haltech f5 and the gsl-se ecu in conjunction would be more tuneable as opposed to the t2 ecu.
I would still like to know if SE injectors are high or low impedance.
#20
Moderator
iTrader: (3)
Join Date: Mar 2001
Location: https://www2.mazda.com/en/100th/
Posts: 30,835
Received 2,604 Likes
on
1,847 Posts
Originally posted by hotty
thanks a TON .. im so pumped up now.. OH.. and are T2 550cc injectors ALSO low impedance? *crosses fingers*
thanks a TON .. im so pumped up now.. OH.. and are T2 550cc injectors ALSO low impedance? *crosses fingers*
#22
Originally posted by hotty
so if i was to get a T2 ecu, afm, injectors and rip out the stock SE ecu and injectors... i wouldnt need a haltech f5 ecu?
if thats true.. that would be SWEET..
so if i was to get a T2 ecu, afm, injectors and rip out the stock SE ecu and injectors... i wouldnt need a haltech f5 ecu?
if thats true.. that would be SWEET..
Thread
Thread Starter
Forum
Replies
Last Post
HalifaxFD
Canadian Forum
126
05-09-16 07:06 PM