I just ordered a BRAND NEW TPI MAF wiring harness from fuelinjectionconnection.com . The site is for a shop in Colorado that custom makes brand new harnesses for GM products out of brand new Delphi parts and they advertise it with only having one splice in the entire harness. Haven't gotten it yet but it sounds pretty legit. All the reviews on ebay were positive and I guess they are show car quality.

http://cgi.ebay.com/ebaymotors/TPI-M...Q5fAccessories

I looked into getting a painless wiring harness kit but it was close to $2000 just for the harness and computer with transmission torque converter lock up kit, which is ridiculous.

When I get the harness installed on the engine I'll let you guys know how it works and everything. I did a quick search and I couldn't find anyone ever reviewing or mentioning this site or their harnesses so maybe we have found a place to replace our old worn out harnesses!

 

I was looking at thier TBI harness.....

 

They look really professional!

 

I have two of their MAP harness in retro fit TPI installs, nicely made and work beautifully.

Only ( minor ) complaint is they split all the engine sub harness off the main harness from the one location
as opposed to spread out on a stock harness so the harness is a little thick where you have to split it
and fit it behind the dist to go to each side of the engine

 

I got an LTx swap harness made from them (him). Very good harness, had a few custom touches too.

Nothing big for instructions though but was still able to get it all installed correctly and turned over on the first try.