C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

89 TPI Conversion to speed density

Thread Tools
 
Search this Thread
 
Old May 14, 2003 | 07:26 PM
  #1  
Fast_vette89's Avatar
Fast_vette89
Thread Starter
Pro
 
Joined: Oct 2002
Posts: 638
Likes: 0
From: tampa fl
Default 89 TPI Conversion to speed density

Hey guys, I am switching my 89 over to speed density. I have the pin outs, and a lot of wiring diagrams and all that going on. I'm also using the 730 ECm used in 92 Z28 TPI's. Has anyone done this before?? Any tips?
the pin outs are not really working well....it's showing GE15? Where the hell is a GE 15 on the 730ECM? i see 2 blk 24/32 PIN connectors, and 1 yellow 32 Pin. they go up to E. A/B is on the blk 24, C/D is on the blk 32 and the yellow 32 only has E on it. this kind of small stuff is throwing me off track here. .... i also ordered a PROM for a 92 Z28 TPI/Auto. any help here??
Reply
Old May 14, 2003 | 09:24 PM
  #2  
-=Jeff=-'s Avatar
-=Jeff=-
Race Director
25 Year Member
All Eyes On Me
Photogenic
Community Favorite
 
Joined: Mar 1999
Posts: 12,594
Likes: 237
From: Bartlett Illinois
Default Re: 89 TPI Conversion to speed density (Fast_vette89)

The way the Pinouts are abbreviated is this:

24 pin Black
BA (1-12)
BB (1-12)

32 pin Black
BC (1-16)
BD (1-16)

32 pin Green (looks Yellow too)
GE (1-16)
GF (1-16)

92 Fbody Memcal is okay, I think the 1991 Vette one has more timing though, if you used the Vette Memcal you need to disable the oil temp setting in the ECM or it will set a code
Reply
Old May 14, 2003 | 09:34 PM
  #3  
Fast_vette89's Avatar
Fast_vette89
Thread Starter
Pro
 
Joined: Oct 2002
Posts: 638
Likes: 0
From: tampa fl
Default Re: 89 TPI Conversion to speed density (-=Jeff=-)

oh, ok. now i know how to read the pin out thing. i wasn't sure.... i like to be exact....not guess. the chip will be RE programed to my set up. I also have a LT1 intake manifold i'm putting on. i need about 700CFM.... and the MAF only flows about 650ish. so.... Peace maf! that thing pisses me off. thanks for the tech help man. I've been doing even more research and came up with something about the VATS, and little odds and ends that are a pain in the butt.... any idea??
Reply
Old May 14, 2003 | 09:48 PM
  #4  
Fast_vette89's Avatar
Fast_vette89
Thread Starter
Pro
 
Joined: Oct 2002
Posts: 638
Likes: 0
From: tampa fl
Default Re: 89 TPI Conversion to speed density (-=Jeff=-)

the best site so far is that 85 z28 site. he did a real good job on stuff.
I can't wait to get the chip tuned and hit the track w/all the bugs worked out.
KISS MY butt TPI, 4,500 shift point....no... LT1 is about 6,000
and the MAP computer set up will accent it nicely. :D
Reply

Get notified of new replies

To 89 TPI Conversion to speed density





All times are GMT -4. The time now is 07:18 PM.

story-0
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!

Slideshow: The 10 most explosive Corvettes ever built based on power-to-weight ratio.

By Joe Kucinski | 2026-05-20 07:23:03


VIEW MORE
story-1
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter

Slideshow: From C1 to C8 we compare every Corvette generation by the numbers.

By Joe Kucinski | 2026-05-12 16:54:12


VIEW MORE
story-2
8 Coolest Corvette Pace Cars (and Replicas) of All Time

Slideshow: Some Corvette pace cars became collectible legends, while others perfectly captured the look and attitude of their era.

By Verdad Gallardo | 2026-05-11 09:50:51


VIEW MORE
story-3
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)

Slideshow: Ranking the top 10 Corvette engines by torque output.

By Joe Kucinski | 2026-05-05 11:58:09


VIEW MORE
story-4
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!

Slideshow: A Corvette pace car nearly matching IndyCar speeds sounds exaggerated, until you look at the numbers.

By Verdad Gallardo | 2026-05-04 20:03:36


VIEW MORE
story-5
Top 10 Corvettes Coming to Mecum Indy 2026!

Among a rather large group of them.

By Brett Foote | 2026-05-04 13:56:44


VIEW MORE
story-6
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!

Slideshow: the top 10 things Corvette owners want in the C9 Corvette

By Michael S. Palmer | 2026-04-30 12:41:15


VIEW MORE
story-7
10 Revolutionary 'Corvette Firsts' Most People Don't Know

Slideshow: 10 Important Corvette 'firsts' that every fan should know.

By Joe Kucinski | 2026-04-29 17:02:16


VIEW MORE
story-8
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2

Slideshow: Should you buy a 2020-2026 Corvette or wait for 2027?

By Michael S. Palmer | 2026-04-22 10:08:58


VIEW MORE
story-9
2027 Corvette vs The World: Every C8 vs Its Closest Competitor

Slideshow: 2027 Corvette lineup vs the world.

By Joe Kucinski | 2026-04-24 16:12:42


VIEW MORE