i want to see your fuel map setup ie hi low z injectors ect
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Goin' Megasquirt (My progress thread)
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Originally posted by jacobrussell View Postok after a lot of research i have this to say about injector pairing..
you might get a smooth idle changing the pairing but
you loose out on the cooling effect of the fuel on the wasted cylinder
Sounds like you're quoting from two different paragraphs on your research... or please elabourate on your statement.
The reason why the idle is lumpy when using a MS is that it doesn't know when to properly start the firing like a stock computer which uses the second wheel in the distributor as a reference. Lex could better explain that...
JoN - Automotive Machinist Journeyman/Refrigeration Mechanic Journeyman
Member of MX-3.com
1996 Mazda MX-3 RS - Creek Blue Mica
1993 Mazda MX-3 GS SE - Raspberry... RIP
Racing BP (Project "Blue" Marlin)... Twin Scroll GT3071R, breaking 30psi at the moment!
"Do it ONCE, do it RIGHT!"
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Originally posted by Shades View Post
What?! So you're saying that fuel is getting dumped into the cylinder that does have the spark to cool it down?! That makes no sense, and why would your injector be squirting into the cylinder that has no spark anyways... not right and a waste of fuel.
Sounds like you're quoting from two different paragraphs on your research... or please elabourate on your statement.
The reason why the idle is lumpy when using a MS is that it doesn't know when to properly start the firing like a stock computer which uses the second wheel in the distributor as a reference. Lex could better explain that...
there is very little lex can explain to me if your car is idling lumpy wired for
stock 1-3, 2-4
Than your car is tuned wrong.
ive asked for a msq of any one who is having problems with idle and still havnt seen oneeat me
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Well I guess we'll see what happens. I'm going to wire them in 1-4 and 2-3.
I will be working on it to day so I'll have some updates tonight. Sorry for the delay, I've be fighting a raging Halo 3 addition.
94 Protege LX: HX-35, Megasquit, ect...
98 Subaru Legacy GT-DD: 1 inch lift, and all the standard N/A stuff.
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jacob it doesnt really idle that lumpy, i was perfectly happy with how it idled... but rewiring the injectors did smooth it out VERY noticeably, and i'm glad i did it.
it does make sense, MS doesnt know what cylinder is firing at any given time, so half the time when you start it things will be timed correctly, and half the time they will not be.Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
... The first FWD BG with a Toyota E153 transmission conversion in the USA!
Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts
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Originally posted by jacobrussell View Postthere is very little lex can explain to me if your car is idling lumpy wired for
stock 1-3, 2-4
Than your car is tuned wrong.
ive asked for a msq of any one who is having problems with idle and still havnt seen one
There are many reasons for a poor idle and this is one of the things you can do to improve it. It's not the only thing obviously but it still helps.
As for the wasted cylinder talk - that's just being mixed up between injection and ignition. The amount of fuel injected is used for combustion, there is no wasted fuel like you'd have spark. On top of that you don't need to cool intake valves anyways.Last edited by Lex; 12-18-2007, 11:57 AM.
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I'm sure all those that have MS units are capable of tuning it for idle... understanding what's happening in the engine well that's a different story.
Lex's experiment has been tried and tested, he's just sharing his findings.
Everyone has their opinion of how to make a smoother ride, and just sharing information... if you haven't tried it, then don't shoot it down. Some people just like to try things outside the box/textbook.
Happy tuning!
JoN - Automotive Machinist Journeyman/Refrigeration Mechanic Journeyman
Member of MX-3.com
1996 Mazda MX-3 RS - Creek Blue Mica
1993 Mazda MX-3 GS SE - Raspberry... RIP
Racing BP (Project "Blue" Marlin)... Twin Scroll GT3071R, breaking 30psi at the moment!
"Do it ONCE, do it RIGHT!"
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Since we are talking idle, I also found that increasing the timing to about 14-16 at idle helps as well as the motor produces more torque with that kind of timing. This depends on several factors like fuel octane, compression, etc etc ... but if you have a standalone try it and see how it works for you.
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can't wait for my MS2 to be here---Has ClubProtege helped you in someway? show your support by Contributing--- Click Here---
1992- project FE3..... 313 WHP @ 9.3psi
I pet my dash when I get into the car..."good car"he actually has a mazda tree, parts grow on it
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it doesnt take that long. just get a spare harness to wire the MS into...Escort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
... The first FWD BG with a Toyota E153 transmission conversion in the USA!
Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts
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neither am i... and i knew nothing about tuning until the first time i got my car started back in juneEscort GTR -- 11.87 @ 117.6 mph -- 320 HP / 325 Ft. Lbs. @ 23 PSI
... The first FWD BG with a Toyota E153 transmission conversion in the USA!
Looking for BP x Toyota E153 adapter plates? PM me or contact me on Facebook: Riel Performance Parts
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If I applied myself there should be no reason why I shouldn't be able to get this done in 2 maybe 3 days.
But it's cold, I've got a cold and I'm laze this time of year. (well any time of year )
Hopefully by the time I'm done this thread will be a nice resource for all the people that are thinking about going with MS.
PS. I will have some progress pix up soon...I've been fighting off a bug so I haven't been doing much of anything.
94 Protege LX: HX-35, Megasquit, ect...
98 Subaru Legacy GT-DD: 1 inch lift, and all the standard N/A stuff.
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