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OBDI 427 tune

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Old Jun 28, 2020 | 12:38 PM
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Default OBDI 427 tune

I'm going to a 427 from my current 350 set up. I wanted to know if anyone had a Bin file they would share for a 427 with 42# injectors. I'm using an 8D XDF. My thought was that I could have this as a starting spot and then go from there with adjustments. I know everyone's combo may be different but it would give me a starting point.

Or should I bite the bullet and go with a new computer. If so is the Holley HP the unit everyone goes with? I see they make a kit, #550-601N, that looks like it works with a TPI. If I am correct I've read that the only thing that doesn't continue to work after installing one is the instant and avg. miles per gallons read out.

Thanks
Chuck

Last edited by cshuman; Jun 28, 2020 at 12:45 PM.
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Old Jun 28, 2020 | 01:38 PM
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Originally Posted by cshuman
I'm going to a 427 from my current 350 set up. I wanted to know if anyone had a Bin file they would share for a 427 with 42# injectors. I'm using an 8D XDF. My thought was that I could have this as a starting spot and then go from there with adjustments. I know everyone's combo may be different but it would give me a starting point.

Or should I bite the bullet and go with a new computer. If so is the Holley HP the unit everyone goes with? I see they make a kit, #550-601N, that looks like it works with a TPI. If I am correct I've read that the only thing that doesn't continue to work after installing one is the instant and avg. miles per gallons read out.

Thanks
Chuck
HOLLY COW. I just looked that kit up. 2100.00 . Nice kit but man alot of money. I hope someone can give you a file close enough to run then get to a Dyno and get Dyno tune
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Old Jun 28, 2020 | 04:16 PM
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Also Haltec, Motec, etc. If going that far, I think I would convert to a big inch LS.

Are you using an original old 427 BBC, stroking a 400, other?
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Old Jun 28, 2020 | 05:53 PM
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[QUOTE=95wht6spd;1601753908]Also Haltec, Motec, etc. If going that far, I think I would convert to a big inch LS.

Are you using an original old 427 BBC, stroking a 400, other?[/QUOTE

Dart SBC block
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Old Jun 28, 2020 | 06:23 PM
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Originally Posted by cshuman
I'm going to a 427 from my current 350 set up. I wanted to know if anyone had a Bin file they would share for a 427 with 42# injectors. I'm using an 8D XDF. My thought was that I could have this as a starting spot and then go from there with adjustments. I know everyone's combo may be different but it would give me a starting point.

Or should I bite the bullet and go with a new computer. If so is the Holley HP the unit everyone goes with? I see they make a kit, #550-601N, that looks like it works with a TPI. If I am correct I've read that the only thing that doesn't continue to work after installing one is the instant and avg. miles per gallons read out.

Thanks
Chuck
I could take a stab at making you one if you'd like. No guarantees it'll be perfect but I could get it running safely I think with some specifics.
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Old Jun 28, 2020 | 07:42 PM
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Dynamic EFI EBL. Move a few wires, do your own tuning with TunerPro and go flash based.
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Old Jun 28, 2020 | 08:12 PM
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Are you keeping the TPI on it ?
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Old Jun 28, 2020 | 08:29 PM
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Originally Posted by 84 4+3
I could take a stab at making you one if you'd like. No guarantees it'll be perfect but I could get it running safely I think with some specifics.
Thanks 84, If you want to that would be great. I have tunerpro etc. and have done all the tuning for my current set up. I could just adjust for the larger injectors and see how it looks. I am just thinking if anyone has already done a 427 it might shorten the trip.
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Old Jun 28, 2020 | 08:30 PM
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Originally Posted by KyleF
Dynamic EFI EBL. Move a few wires, do your own tuning with TunerPro and go flash based.
Yes, I have all the tuning equipment.
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Old Jun 28, 2020 | 08:34 PM
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Originally Posted by convas
Are you keeping the TPI on it ?
I have a Hogan sheetmetal unit I just recently installed that I will use.
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Old Jun 28, 2020 | 10:17 PM
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Originally Posted by cshuman
Thanks 84, If you want to that would be great. I have tunerpro etc. and have done all the tuning for my current set up. I could just adjust for the larger injectors and see how it looks. I am just thinking if anyone has already done a 427 it might shorten the trip.
May not be a bad idea to check third gen either. Their tuning section is pretty beefy and someone may have so.ething that'll be a good starting point.

When I did mine I built it off one of the bins that came with the ebl and I more or less just scaled the VE tables and put really conservative timing in it. If you're using a similar rpm band and induction setup you may be able to get away with scaling the injectors and adding fuel to the tables and work from there. I started tuning mine back in February and I am now at a point where the thing drives better than stock but it took a lot of data logs. The VE learns did help a ton though. I'd still be working it if I couldn't do that with the wide band.

Like i said, no promises on what I would build but it would run and be safe. I would check third gen too and see because someone there may have something.
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Old Jun 29, 2020 | 11:40 AM
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Originally Posted by 84 4+3
May not be a bad idea to check third gen either. Their tuning section is pretty beefy and someone may have so.ething that'll be a good starting point.

When I did mine I built it off one of the bins that came with the ebl and I more or less just scaled the VE tables and put really conservative timing in it. If you're using a similar rpm band and induction setup you may be able to get away with scaling the injectors and adding fuel to the tables and work from there. I started tuning mine back in February and I am now at a point where the thing drives better than stock but it took a lot of data logs. The VE learns did help a ton though. I'd still be working it if I couldn't do that with the wide band.

Like i said, no promises on what I would build but it would run and be safe. I would check third gen too and see because someone there may have something.
Is yours a 427? If so then that would be great if you would share. I was thinking of doing the same thing with mine, calculating what I thought I needed to do to change VE to adjust, lower the timing and go from there. I've got an LM1 and a wideband I can connect thru Tunerpro. I'll also check with Third Gen.
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Old Jun 29, 2020 | 12:18 PM
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Originally Posted by cshuman
Is yours a 427? If so then that would be great if you would share. I was thinking of doing the same thing with mine, calculating what I thought I needed to do to change VE to adjust, lower the timing and go from there. I've got an LM1 and a wideband I can connect thru Tunerpro. I'll also check with Third Gen.
I'm 350 sadly but I spitballed a 305 tune to work well.

There may be a 435 bin that came with ebl i can look at to make some guesses though.
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Old Jun 29, 2020 | 04:52 PM
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Originally Posted by 84 4+3
I'm 350 sadly but I spitballed a 305 tune to work well.

There may be a 435 bin that came with ebl i can look at to make some guesses though.
Please help me with my ingnorance, what does ebl stand for?
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Old Jun 29, 2020 | 06:39 PM
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Originally Posted by cshuman
Please help me with my ingnorance, what does ebl stand for?
Embedded lockers. Its the tuning software and ecm mod mentioned in post 6 by Kyle.

Last edited by 84 4+3; Jun 29, 2020 at 06:40 PM.
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Old Jun 29, 2020 | 06:52 PM
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Originally Posted by 84 4+3
Embedded lockers. Its the tuning software and ecm mod mentioned in post 6 by Kyle.
Ok thanks. As mentioned I have the hardware and software to modify my BIN files and burn new chips. Never heard referred to before as Embedded Lockers.
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Old Jun 29, 2020 | 06:58 PM
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Originally Posted by cshuman
Ok thanks. As mentioned I have the hardware and software to modify my BIN files and burn new chips. Never heard referred to before as Embedded Lockers.
Its just one way of doing it like an ostrich and such. Its real time flash based vs emulating proms and burning chips though.
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Old Jun 29, 2020 | 07:20 PM
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Originally Posted by 84 4+3
Its just one way of doing it like an ostrich and such. Its real time flash based vs emulating proms and burning chips though.
Thanks, will you need any other information from me to take a stab at it?
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Old Jun 29, 2020 | 09:25 PM
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Originally Posted by cshuman
Thanks, will you need any other information from me to take a stab at it?
Cam specs, heads, intake, exhaust and ignition would definitely help. I'll send you what I put together and then you can mull it over and see if it works or not. I was pretty good both times honestly so maybe I'll get a third.
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Old Jun 30, 2020 | 05:41 AM
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Originally Posted by 84 4+3
Cam specs, heads, intake, exhaust and ignition would definitely help. I'll send you what I put together and then you can mull it over and see if it works or not. I was pretty good both times honestly so maybe I'll get a third.
Great once I know the cam I’ll let you know.
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