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Old 11-08-2012, 11:05 AM   #1901
jaros44sr
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Re: PO has me PO'd

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No, just curious if FAST makes a retrofit harness for the TPI for use with the XFI, or if you had to modify one to work.


So the EFI will control an electronic transmission?
Dealer said it would also control the trans., but i dont have the money for that mod., yet.
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Old 11-09-2012, 12:01 PM   #1902
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Re: PO has me PO'd

Location,location,location.....

Fourth possible mounting spot. Considered face of heater box, passenger side kick panel, firewall behind glovebox, and now inside glovebox. Leaning towards inside, making new sheetmetal glovebox/pcm mount


20121109_105059 by jarosaj, on Flickr
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Old 11-09-2012, 01:48 PM   #1903
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Re: PO has me PO'd

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Well, not really...been laid up for a couple weeks with a banged up ankle!

Got the fuel regulater mounted in the fuel rail, so that part just needs the gauge.

Waiting on a couple thousand to come in to buy my FAST XFI system, then i should have lots to do. Right now im just plugging away at little stuff to keep busy, feels good to be able to stand up again
Guys over at -----------------have been really helpful, making sure i dont buy the wrong part or something i dont need. This really helps when you have no idea what your doing!

My main problem is the PCV system. Bought the valve yesterday to put in the vc, but that is all i know of the stock system. Dunno where it gets plugged into the plenum....searched and searched, read and read, but cant find any actual pictures of what the system looks like. Found some diagrams, so i know where it goes, just not how it actually hooks up with the fittings and size of vacuum lines...ill keep searching, i know the info is out there, maybe buy an old assembly manual for an '85 corvette

Been meanin' to post up on your build thread to see what youre up to...i know you made progress

Thanks for lookin
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Old 11-09-2012, 03:09 PM   #1904
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Re: PO has me PO'd

In my old show truck s10 I used the glove box to hold my pcm, HATED IT. I would suggest behind and under the dash.
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Old 11-09-2012, 03:21 PM   #1905
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Re: PO has me PO'd

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In my old show truck s10 I used the glove box to hold my pcm, HATED IT. I would suggest behind and under the dash.
Thanks for the input, illpost up a pic of the mount. Should be deeper in the glove box area, closer to the firewall, and then remake cardboard glovebox...lmk, what you think after i make the mount. Just thought i should be able to see the leds

Maybe make the back of the glovebox out of plexiglass
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Old 11-09-2012, 06:52 PM   #1906
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Re: PO has me PO'd

the plexiglass idea is good! Its your truck so do as you wish, just letting you know my experience.
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Old 11-09-2012, 10:07 PM   #1907
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Re: PO has me PO'd

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the plexiglass idea is good! Its your truck so do as you wish, just letting you know my experience.
Still open to options, once i pull the glovebox, ill be able to see how much room i have behind it

Just found a new source for TPI parts, they had my two cables, one for coil to distri., and one for power to coil

tpi parts.net
Cape Coral, Fla
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Old 11-10-2012, 02:17 AM   #1908
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Re: PO has me PO'd

What'd you do that for?

I was just wondering where you bought the XFI ECM.


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Old 11-10-2012, 08:55 PM   #1909
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Re: PO has me PO'd

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What'd you do that for?

I was just wondering where you bought the XFI ECM.
All the mail order speed shops carry it for less then i paid.....the owner of the company where i bought it, tried the bait and switch on me. On friday, they said they ordered it. Come tuesday, they said it had arrived. Curious, since it wasnt wrapped in plastic, i opened the box. It was damaged from mounting, so i asked him. He said that it was just mocked up. OK, turned it over, and the date of manufactor was 2008.

I refused to take it, and he ordered another one that arrived on thursday. Just left a untrusting feeling, but he did make it right. I wasnt going to say anything, but since you asked. I have found another speed shop in my area with a dyno, so i will be using him for the final tune

Finally, i have an idea of where to mount it....passenger side kick panel. Thanks Dale
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All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
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Old 11-11-2012, 01:32 AM   #1910
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Re: PO has me PO'd

Aaahhhh I understand


Quote:
Originally Posted by jaros44sr View Post
All the mail order speed shops carry it for less then i paid.....the owner of the company where i bought it, tried the bait and switch on me. On friday, they said they ordered it. Come tuesday, they said it had arrived. Curious, since it wasnt wrapped in plastic, i opened the box. It was damaged from mounting, so i asked him. He said that it was just mocked up. OK, turned it over, and the date of manufactor was 2008.

I refused to take it, and he ordered another one that arrived on thursday. Just left a untrusting feeling, but he did make it right. I wasnt going to say anything, but since you asked. I have found another speed shop in my area with a dyno, so i will be using him for the final tune

Finally, i have an idea of where to mount it....passenger side kick panel. Thanks Dale
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Old 11-11-2012, 11:49 PM   #1911
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Re: PO has me PO'd

Mocked up to see where the rest of the harness will lay. First attempt, pcm was to high, and interfered with the bottom of the dash
Using the holes for the heater control, and a tab on the heater box
If i mounted it on the kickpanel, there was a chance water would drip on it, so im going to try it here


20121111_224030 by jarosaj, on Flickr
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Old 11-15-2012, 03:21 PM   #1912
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Re: PO has me PO'd

Dale 99, wonder if i could ask another favor, pic...

Need to know where your MAP sensor is located, maybe even a pic of the bracket. 1985 didnt have a boss on the plenum for the bracket. So, i have to come up with a mod.

Your coil mount inspired me to copy it...ty
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Old 11-15-2012, 03:48 PM   #1913
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Re: PO has me PO'd

My upper plenum is the correct for my year, 90-92, so it has a threaded boss for the bracket on what would be the rear, right side. It has an L-shaped bracket. I made one out of aluminum for a year or so, tell I found a GM one. The map has an elbow that comes out the bottom, and goes right into a vac port.... which your 85 wont have as you mentioned.

You can t some of that off, or I have seen people drill/tap the plenum for extra ports. Or a popular mod is to move the IAT sensor from the bottom of the plenum into the air stream, and then put a hose barb there for more vac ports.

I dont have car with me at moment, so I cant take pics. Will check in a min to see if one of my facebook pics shows it. :edit: nope, will have to take one for you later.
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Old 11-15-2012, 04:14 PM   #1914
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Re: PO has me PO'd

Quote:
Originally Posted by Dale99 View Post
My upper plenum is the correct for my year, 90-92, so it has a threaded boss for the bracket on what would be the rear, right side. It has an L-shaped bracket. I made one out of aluminum for a year or so, tell I found a GM one. The map has an elbow that comes out the bottom, and goes right into a vac port.... which your 85 wont have as you mentioned.

You can t some of that off, or I have seen people drill/tap the plenum for extra ports. Or a popular mod is to move the IAT sensor from the bottom of the plenum into the air stream, and then put a hose barb there for more vac ports.

I dont have car with me at moment, so I cant take pics. Will check in a min to see if one of my facebook pics shows it. :edit: nope, will have to take one for you later.
Thanks for the speedy response...i have a larger port along side of my fuel reg.
port, was going to use that. Your right, parts are hard to find, i do have a 'L' shaped bracket that i havent found the home for yet, maybe ill get lucky and it will be my map sensor bracket

Found new tpi parts supplier, just nothing for used parts. Been hanging out at the FAST XFI forum, asking questions and reading. Starting to get a grasp on all this new terminolgy, and what goes where

Take your time on the pic, as i have lots of other things to work on

Edit...the IAT location may be an option, since i need another port for my brake booster
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Last edited by jaros44sr; 11-15-2012 at 07:15 PM.
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Old 11-15-2012, 04:30 PM   #1915
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Re: PO has me PO'd

post a pic of the questionable bracket.

brake booster goes in the left rear of the plenum. Kinda gets in the way of the spark plug wires.
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Old 11-15-2012, 09:38 PM   #1916
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Re: PO has me PO'd

ok, looked. As for ports on the plenum, I have..
1. hvac.. pass side
2. charcoal canister.. pass side
3. map.. pass side
4. brake booster.. left rear
5. fuel pressure.. underside where IAT use to be.

If you want any of these full size, give me a pm with your email addy.
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Old 11-15-2012, 11:36 PM   #1917
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Re: PO has me PO'd

Dude, thank you very much for taking the time, just the info i needed...i dont think the bracket i have is a map bracket, close to that but no cigar. Its gotta go somewhere

Those fat runners look great on there!
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Old 11-16-2012, 01:21 AM   #1918
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Re: PO has me PO'd

Is that a L31 Vortec distributor I see?




Quote:
Originally Posted by Dale99 View Post
ok, looked. As for ports on the plenum, I have..
1. hvac.. pass side
2. charcoal canister.. pass side
3. map.. pass side
4. brake booster.. left rear
5. fuel pressure.. underside where IAT use to be.

If you want any of these full size, give me a pm with your email addy.
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Old 11-16-2012, 08:57 AM   #1919
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Re: PO has me PO'd

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Is that a L31 Vortec distributor I see?
Correct Sir, I did the 0411 pcm swap so I have true SFI, rather then batch injecting.
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Old 11-16-2012, 09:06 AM   #1920
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Re: PO has me PO'd

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Originally Posted by jaros44sr View Post
Dude, thank you very much for taking the time, just the info i needed...i dont think the bracket i have is a map bracket, close to that but no cigar. Its gotta go somewhere

Those fat runners look great on there!
Post a pic of that bracket.

The runners really helped on the upper rpm range. Most people say TPI chokes out at about 4500, Ive spun this thing up to 5800.

crate 350
alumn vette heads
LT1 cam
stamped rockers(tried full rollers and couldnt make them stay tight)
ported vette base intake
large port runners
modified plenum (got rid of egr wall and hogged out for larger runners)
stock throttle body, but added splitter
0411 pcm swap
stock air intake (heres my choke)
aluminum crank/alt pully

Id like to get the base intake you have, but for stock heads.
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Old 11-16-2012, 12:23 PM   #1921
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Re: PO has me PO'd

Nice improvements to the engine, Dale. Ill look into the egr mod. Found the ac delco map senser at tpi parts.net

Picked up the harness from my coil to the distri. there too

I see a boss on the plenum at the location you indicated, heres the mystery bracket. Where did you find your map bracket, still searching the net


20121116_111430 by jarosaj, on Flickr
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Old 11-16-2012, 06:59 PM   #1922
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Re: PO has me PO'd

Ive never seen a bracket like that before.

You "could" drill n tap that, but your taking a risk of a vac leak. I would look at mounting it else where, like maybe on the same bracket as the coil? You depend on how long your wires are for it.
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Old 11-16-2012, 07:24 PM   #1923
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Re: PO has me PO'd

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Ive never seen a bracket like that before.

You "could" drill n tap that, but your taking a risk of a vac leak. I would look at mounting it else where, like maybe on the same bracket as the coil? You depend on how long your wires are for it.
Wait, i wasnt planning on mouting it where it sits, just sat it there for display. It will get mounted in the factory location if at all possible
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All parts offered to help are free, unless otherwise noted

Dont try this stuff in my build thread, unless you have 55 years of mechanical OTJ training
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Old 11-16-2012, 09:15 PM   #1924
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Re: PO has me PO'd

I was saying to mount both away from the motor on a custom bracket. But the coil is self grounding, so it needs to be on metal.
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Old 11-17-2012, 02:49 AM   #1925
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Re: PO has me PO'd

Very good upgrade.

Quote:
Originally Posted by Dale99 View Post
Correct Sir, I did the 0411 pcm swap so I have true SFI, rather then batch injecting.
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