EFI-SD40a

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88- Tbird/Stang/Lincoln/Mercury, RV's, and Trucks.

Re: EFI-SD40a

Unread postby decipha » Sun Aug 02, 2020 12:44 pm

lol
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Re: EFI-SD40a

Unread postby JETFAST » Sun Aug 16, 2020 8:53 pm

got my I-6 going with a t3/t4 @ 6 psi, Stock injectors and a vortec FMU on the return. sounds like big truck, pulls like one too.
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Re: EFI-SD40a

Unread postby efloth » Wed Aug 19, 2020 5:14 am

Nice! What exhaust manifold did you use? Did you get that MAP check valve working?
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Re: EFI-SD40a

Unread postby efloth » Mon Aug 24, 2020 12:00 pm

It looks like the CEL is fuel related. When cold I was going too rich. Still suffering from some serious dwell on these injectors compared to stock. How do these Injector Offset values look for 52 PSI? Should I be calculating for regulator or pump pressure? Anything else I should be looking at? It runs almost perfect but rich/lean swings are between .80 and 1.2 on the ve histogram but still averaging around 1

Code: Select all
0.00    2.500
0.00    2.500
6.00    2.188
12.00   0.906
13.00   0.750
14.00   0.656
15.00   0.563
15.94   0.450
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Re: EFI-SD40a

Unread postby JETFAST » Fri Aug 28, 2020 2:42 pm

efloth wrote:Nice! What exhaust manifold did you use? Did you get that MAP check valve working?


I removed the muffler, and rear mounted it just behind the cab. Work around the shop has been busy, and i have not had time to mess with it. I am currently running it with out a check valve, and it works as needed. Drive it everyday. As more time allows I will address the situation better. came from be/ea, and i am still learning my way around the TP/RT software. Have not been able to do any data logging as of yet, but I do have a gauge on the O2 sensor, and closed loop is working good, no CEL's. Just need more free time with it.
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Re: EFI-SD40a

Unread postby JETFAST » Wed Sep 09, 2020 12:17 pm

would you mind if I post the current tune I am running in here for review? or should I start a new thread?
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Re: EFI-SD40a

Unread postby decipha » Wed Sep 09, 2020 12:28 pm

just start a new one
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91 4r70w - Skarlett
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Re: EFI-SD40a

Unread postby motorhead1991 » Thu Sep 10, 2020 1:04 pm

I have a carb head I can use to build a couple manifolds if anyone is interested.

I'll have to get a fuelie intake so I know where I have clearance.
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Re: EFI-SD40a

Unread postby efloth » Fri Sep 11, 2020 10:57 am

Making progress with fueling consistency @ 52psi on the 80s. I wanted to see if I could get it right without lowering fuel pressure. Quick question: does FN367W (Injector Offset Voltage) simply add to the final calculated injector pulse? I started with the correct curve and experimented with lowering PW by .02 until things improved (increasing the PW made it worse so this is counterintuitive). I have experienced a noticeable power increase and fewer CELs but I am at .100 @ 14v. VE looks good and I am not going super rich on decel any more. Am I just overcompensating for some other issue in the tune? Any input would be appreciated.
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Re: EFI-SD40a

Unread postby decipha » Wed Oct 14, 2020 5:58 am

I'm late didn't see this reply but if you need to reduce the offset that much to get decel fuel under control then most likely your VE tabel in the decel areas needs to be reduced significantly.
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Vehicle Information: Supercoupin' x10
90 (4x 5spds) - Dante, Ruby, Daja, Ava
91 4r70w - Skarlett
92 (2x) 5spd & auto - Bianqa, Andrea
93 auto - Danika
94 5spd Rionda
95 auto Aisha
Other Vehicle(s): Others:
00 Lincoln LS - Luanda
98 Camaro SS - Bounquisha
02 Harley F-150 - Sasasha
03 Marauder - DyShyKy
00 Explorer 5L - Bernyce
07 GMC 2500HD 6L - Veranafer
06 Chrysler 300 AWD - Sharifa

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