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-   -   cheapest way of fuel management (https://www.homemadeturbo.com/engine-management-10/cheapest-way-fuel-management-3051/)

Rolla1990 03-25-2003 01:03 PM

Re:cheapest way of fuel management
 

Originally Posted by 88crx91integra
smc+ & DSM 450's. 150 max. plus you can run it all the way up to 14psi. and the smc+ serves as a missing link to!

I've tried forever to find a SMC but I can't!!!!!! I followed the link you gave me before, and the link on the projects page, but they didn't work.

UberTeg 03-26-2003 02:24 AM

Re:cheapest way of fuel management
 
My OBD1 boost code is $100, $50 for dsm 450's are ur set :p And its not a crappy hack liek the SMC, its real boost code.

MR_DR_PEP 03-26-2003 03:05 AM

Re:cheapest way of fuel management
 

Originally Posted by UberTeg
My OBD1 boost code is $100, $50 for dsm 450's are ur set :p And its not a crappy hack liek the SMC, its real boost code.

that's nice of you UberTeg

UberTeg 03-26-2003 03:16 AM

Re:cheapest way of fuel management
 
i'm not nice, i' an assshole, dont forget that :p

tdaddylove 03-30-2003 11:36 PM

Re:cheapest way of fuel management
 
What is SMC?

steedspeed 03-30-2003 11:47 PM

Re:cheapest way of fuel management
 
Use a pressure switch to turn a cold start injector on when you get boost. Make sure you fine tune the fuel pressure and injector on pressure using an air fuel meter. Worked well on several cars for me! including a D16 running 7 psi.
Pretty nasty but it can work quite well if you get it set right.

Semnos 03-31-2003 06:33 AM

Re:cheapest way of fuel management
 
George Ricketts has posted some OBD0 code to PGMFI that acts like an AFC boost hack

I can't find it.

Tom-Guy 03-31-2003 08:37 AM

Re:cheapest way of fuel management
 
Steedspeed, that works, but the average cold start injector is good for ~25 hp. Some are higher flow (Merv V8? Others?) but I'm not up to speed on which. I've talked to people who have run some staged setups using those and are pretty happy. I recommend that you tune it nice and rich, as anything else is a bit dangerous ;)

The Bosch cold start injectors are nice for several reasons - they have flanges so you can bolt them all sorts of nifty places and they like to be run at 100% duty cycle - you can just run 12v from the battery to them and it won't hurt them like a regular injector.

One of the Dodge sites had a nifty DIY opamp circuit to cut a cold start injector on/off if you went too lean under boost. You could adjust the MAP voltage (boost) it turned itself on at, as well as the O2 voltage it turned itself on at. Very creative. I can see your engine bay getting pretty messy if you don't think out how to implement all the injectors, though.

Semnos, the file you want is 3/4 the way down this thread, but you need to sign up for a free PGMFI account to access the ROM section the thread is at. http://pgmfi.crx-forum.org/phorum/re...10&i=292&t=292

Semnos 04-01-2003 08:56 AM

Re:cheapest way of fuel management
 
oh ok thanx I'm already signed in ;D
I got my injectors today, but the weather is bad (raining).
Going to put it in my other intake manifold and swap it with the one in the car.

Semnos 04-01-2003 09:00 AM

Re:cheapest way of fuel management
 
Oh sweet no FTB hehehe have to convert to electronic advance first....Can I put a 2 bar MAP with this??


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