Speed density HO conversion computers ?

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Speed density HO conversion computers ?

June 27, 2018, 06:26:07 AM

I’ve decided to move forward with my ho conversion and have a computer question. I currently have a VJ1? I’ve read a couple places that a DA1 will work better for what I’m wanting? What do you guys think? 87 Tbird 5.0 w/aod... 5 speed swap in the future

Speed density HO conversion computers ?

Reply #1 – June 27, 2018, 04:49:57 PM

Are you going to leave the motor a stock HO or do upgrades? Mine is SD but I'm thinking of switching to the megasquirt.

Speed density HO conversion computers ?

Reply #2 – June 27, 2018, 05:43:55 PM

Staying SD. It’s just a weekend/fair weather cruiser

Speed density HO conversion computers ?

Reply #3 – June 27, 2018, 08:10:03 PM

Yeah I hear that I'm staying SD as well that's why I was considering the Megasquirt since its tunable.

I think the VJ1 would be fine. I dont see a reason that wouldn't work unless I'm missing something. I'm not even sure which one is in my car at the moment I'll have to look.

Speed density HO conversion computers ?

Reply #4 – June 27, 2018, 09:08:49 PM

I read somewhere that DA1 was a little better but can’t recall where I read it. Can’t imagine there being enough difference to justify it with an SD setup??

Speed density HO conversion computers ?

Reply #5 – June 28, 2018, 08:28:05 AM

The DA1 is tuneable. Either ECU will work for you but the DA1 will add a little umpf since it's programed timing is based on the slightly better E7 heads, not likely enough to get excited over.

John

Speed density HO conversion computers ?

Reply #6 – June 28, 2018, 12:01:25 PM

A Mark VII computer will work just as well.

Speed density HO conversion computers ?

Reply #7 – June 29, 2018, 01:01:45 PM

Skip the E7's do GT40s!!! :D

Do it once and don't get buyer's remorse. Seriously it's a leap ahead. You will get used to the power and you will be dissatisfied I PROMISE :D
And before anyone mentions it, yes there's a piston-to-valve clearance issue. Do this for really cheap and it'll be mint https://ls1tech.com/forums/generation-iii-internal-engine/1155880-how-flycut-pistons-ls1-free-almost.html
Be SURE to use 40 grit. The pictures are dead but the description is pretty good.

Speed density HO conversion computers ?

Reply #8 – June 29, 2018, 07:02:17 PM

Yeh, I decided to skip the E7s for sure . I have GT40s w TF spring Kit installed.

Speed density HO conversion computers ?

Reply #9 – June 29, 2018, 10:31:04 PM

I did run GT40P heads (had different than stock pistons), GT40 intake, and Comp 266HR cam on a Mark VII speed density computer. Ran fine. Went to an A9P to run 24lb injectors.

Of course my current combo (see signature) would run like ass on a Mark VII SD computer.......

Speed density HO conversion computers ?

Reply #10 – June 30, 2018, 07:40:56 AM

You CAN, though I haven't ever, install a twEECer or a Quarterhorse on a speed density EEC and tune it.