Gurus: MPFI with Mexican cal?

[Glacial]

Hey all! I'm looking at possibly picking up a 1990 2.5 TBI and converting it over the MPFI. Few questions here...

1. What will I need to do this, assuming I can retain the stock SBEC and recalibrate it with the Mexican MPFI non-turbo cal (which I have?) I'm thinking the intake, injectors, fuel rail, and TB from a later turbo car. Anything else that I'm missing?

2. Um, has anyone done this before? (with a Mexican 2.5 cal)

I know MegaSquirt's been done successfully before, but I'm nightmare cheap

Thanks in advance, I'll fire as much rep points as I can

[RPMurph]

need the engine bay wiring harness also and a AFPR

[Glacial]

Quote:

Originally Posted by RPMurph need the engine bay wiring harness also and a AFPR

Wiring harness: Woops, that's what I get for writing late at night

The AFPR's news to me, so thanks for the heads-up. Guess I'd best start amassing parts

[RPMurph]

i dont know that you will really need the AFPR but it probly wouldnt be a bad idea
http://thedodgegarage.com/na_mexican_pfi.html
might be helpful

[Glacial]

Quote:

Originally Posted by RPMurph i dont know that you will really need the AFPR but it probly wouldnt be a bad idea http://thedodgegarage.com/na_mexican_pfi.html might be helpful

I think you're right on the AFPR

Heh, that DDG page was what gave me the idea. Thank the gods for Gary Donovan.

So, I assume nobody's tried with a stock SBEC and the Mex cal? Guess I'd better pick up a spare SBEC with the wiring 'n intake then. Thanks again!

[Whorse]

I'm also interested in this for my 87 TBI Lebaron, so if it's not costly I'd be willing to try it out.

[Shel-Game]

Quote:

Originally Posted by Glacial Hey all! I'm looking at possibly picking up a 1990 2.5 TBI and converting it over the MPFI. Few questions here... 1. What will I need to do this, assuming I can retain the stock SBEC and recalibrate it with the Mexican MPFI non-turbo cal (which I have?) I'm thinking the intake, injectors, fuel rail, and TB from a later turbo car. Anything else that I'm missing?

Care to e-mail me that cal? I'd love to take a look at it. I have a plan for a 2.4 NA engine for the race car in the future...

[DocFish]

Why not just use the flex-fuel computer? Easier to find and $30 at the junkyard.

[RPMurph]

Quote:

Originally Posted by DocFish Why not just use the flex-fuel computer? Easier to find and $30 at the junkyard.

to much stuff on them.....all the methenol vs gasoline sensors that do all kinda crazy shit.....easier to go wit a turbo comp then a FFV comp

[Glacial]

Quote:

Originally Posted by RPMurph to much stuff on them.....all the methenol vs gasoline sensors that do all kinda crazy shit.....easier to go wit a turbo comp then a FFV comp

Exactly.

Doc: I don't see how a FFV puter could possibly be easier to find than a turbo, unless they made WAY more flexfuels than I thought? It'd be fun to play with, though.

If anyone wants the Mexican cal, just PM me your email and I'll fire 'er over

[DocFish]

I thought you were just going to MPFI, not turbo. Are you talking about using a turbo computer and recalibrating it for non-turbo use? I still think it would be easier to find a flex fuel car. The methanol sensor was down by the tank to pick up the % of meth in the fuel. You wouldn't need to add it to your car. They still ran on straight gas. I saw two flex fuelers in the junkyard the last time I went. A lot less hastle that getting a SBEC and reclaibrating it. And you wouldn't need an AFPR then.

[capev86]

on my 89 k wagon 2.5, which is going w/ modded 2.5/3spd out of my old dynasty, im going the full spirit ffv route. t1 intake w/ stainless injectors, stainless fuel lines and hoses, 18 gallong plastic tank, etc, etc, etc. when the time comes, i'll have to pick up an ffv spirit to steal all the parts from!

[Una]

18 gallon tank? Hell yeah! I need that!

[Glacial]

Quote:

Originally Posted by DocFish I thought you were just going to MPFI, not turbo. Are you talking about using a turbo computer and recalibrating it for non-turbo use? I still think it would be easier to find a flex fuel car. The methanol sensor was down by the tank to pick up the % of meth in the fuel. You wouldn't need to add it to your car. They still ran on straight gas. I saw two flex fuelers in the junkyard the last time I went. A lot less hastle that getting a SBEC and reclaibrating it. And you wouldn't need an AFPR then.

I am indeed -- but I'm pretty sure the FFVs were never sold up here in Canada, and if I can just reflash a SBEC with the Mexican MPFI calibration file I've got, it should just be an issue of bolting on the new intake and fuel pump and hooking up the wiring, no? (I'm a cheap bastard)

[Una]

Sounds like an easy route to me. Just make sure it's a turbo SBEC, the TBI SBEC probably won't have the extra injector drivers..