 Megasquirt question.... |
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| Joe Bob |
 Feb 6 2007, 08:59 AM
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#1
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Retired admin, banned a few times  Group: Members Posts: 17,427 Joined: 24-December 02 From: Boulder CO Member No.: 5 Region Association: None  |
If you are running dual throttle bodies...where can you put a "fifth" injector for cold start enrichment or is there a setting in the software I'm missing? My 2.2 runs like crap until 210F.....which is about 5 miles at cruising speed.
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| smdubovsky |
Feb 8 2007, 12:51 PM
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#2
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Member Group: Members Posts: 331 Joined: 27-September 04 From: Silver Spring, MD Member No.: 2,837 Region Association: MidAtlantic Region |
Got ITBs on my 911. No easy way to add air for idle. I've always thought of using one of the stepper motor screw drive type IACs, removing the IAC part, and mounting it so the screw drive pushed on the throttle linkage. Closed loop idle control but its ALOT of work. One valve and 4 tubes would work, but you'd have to balance them. You could also do a 'fast idle' solenoid to push on the linkage.
Easier to add some ign advance below idle. Say your running 10deg at 1000rpm. Put 15deg in the <=900rpm bins. If the motor rpm sags, the extra advance will help out. Of course you need to play w/ the # to find a safe and effective amount. SMD |
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| banger |
Feb 8 2007, 02:08 PM
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#3
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Member Group: Members Posts: 354 Joined: 12-November 06 From: Santa Clarita Member No.: 7,205 Region Association: Southern California |
I thought on some of the 80s chevy cars, they had a solenoid to kich the throttle open a little for idle, but it might have been for opening a little when the A/C was on. Needless to say there was something around to do that. Had an adjustable plunger so you could set how far it would increase the idle.
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Posts in this topic
mikez Megasquirt question.... Feb 6 2007, 08:59 AM
DNHunt Mike
Why would you need a fifth injector unless t... Feb 6 2007, 09:10 AM mikez OK...I'll try that. The injectors are what ca... Feb 6 2007, 09:58 AM DNHunt Mike
Are you familiar with the sreen that has the... Feb 6 2007, 10:57 AM
mikez
Mike
Are you familiar with the sreen that has th... Feb 6 2007, 11:58 PM jkeyzer 5th injectors are for outdated 70s analog fuel inj... Feb 6 2007, 11:30 AM crash914 richen the hell out of it at low temps...head temp... Feb 7 2007, 06:58 AM mikez No problem on starting....just during engine oil w... Feb 7 2007, 08:28 AM DNHunt Mike
I don't think there is a problem using t... Feb 7 2007, 08:45 AM toon1 MS also has "easy therm" it is a progra... Feb 7 2007, 09:28 AM DNHunt
MS also has "easy therm" it is a progr... Feb 7 2007, 09:36 AM restore2seater This may help with calibration.
DIY Auto Tune Feb 7 2007, 10:38 AM ischmitz O.K.,
I will richen up the table for warm-up on Mi... Feb 8 2007, 07:03 AM messix add advance below desired idle is the way to go. Feb 8 2007, 02:46 PM Aaron Cox
add advance below desired idle is the way to go.
... Feb 8 2007, 04:51 PM crash914 the table burn problem sounds like a communication... Feb 8 2007, 04:43 PM Crazyhippy Just added 25* to mine, no problem cranking...
Pu... Feb 8 2007, 05:23 PM ischmitz I found that too much advance below your target id... Feb 8 2007, 05:29 PM messix you only need a couple of degrees. dn hunt had his... Feb 8 2007, 07:23 PM TimT Cranking rpm is usually around 250-300 rpm, and t... Feb 8 2007, 08:05 PM mikez Usual cranking requires throtle manipulation....wh... Feb 8 2007, 08:14 PM TimT
correctamundo....having to manipulate the throt... Feb 8 2007, 08:51 PM DNHunt There is adjustment for prime pulse, cranking enri... Feb 9 2007, 08:08 AM jhadler Can't speak to the FI enrichment techniques, t... Feb 9 2007, 05:44 PM mikez Did some changes as suggested....runs a LOT better... Feb 9 2007, 10:11 PM |
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