Getting ready to do the ultimate TBI mods tomorrow...just wondering how long it took some of you guys who have done it? Any problems to watch for, or anything to pick up from the store before i take my tbi off besides the rebuild kit, extra base gasket, the famous cutting board for the tbi spacer? Any tips before i go into this? Thanks

 

If I remember right,I put about 4-5 hours into mine,plus the three times pulling the injector housing off to adjust the fuel pressure afterwards.

------------------
'91 RS 5.0 TBI
New paint-solid black
ROH Snyper wheels-17x9 wrapped in 275/40/17
Eibach sportline springs
ASCD SS hood, high-rise Z-28 spoiler
Flowmaster cat-back
TBI mods
383 implantation soon to come.

 

Did you feel it was worth it? Was there a very noticeable SOTP difference, or hard to tell?

 

If you have an open element and a good aftermarket exhaust system,you should feel a difference.I did mine at the same time I added an open element and exhaust system.I bumped the timing up a couple degrees also and noticed a difference.I don't know what the difference would be in the tbi mods alone,but every little bit helps.I raised my fuel pressure up just a hair and could tell a difference.But I haven't had a chance to replace my old o2 sensor yet to check my fuel/air mixture.

------------------
'91 RS 5.0 TBI
New paint-solid black
ROH Snyper wheels-17x9 wrapped in 275/40/17
Eibach sportline springs
ASCD SS hood, High-rise Z-28 spoiler
Flowmaster cat-back
TBI mods
383 soon to come.

 

MAN! Thats what I have to do is bump up my timing to like 6* or something. I need to get a timing gun. How the hell do u work them things anyways?

------------------
Eric Natzke
91 Firebird 305 TBI
"It Ain't Stock"
http://members.aol.com/j007golden/91firebird.html
For info on certain parts or mods go to the site below
http://members.aol.com/j007golden/modeval.html

 

i thought the stock timing on our cars is 6*. thats what my friends GM manual says. Oh well, I could be wrong

 

What is the extra base gasket and why do you need it? I'm picking up a tbi tunep kit today as well and i'm also doing the tbi mods either today or tommorrow.

------------------

88 305TBI
Mods:Hooker Aerochamber 3" exhaust, gutted kitty, March pullies, no smog, 180 thermo,
14x4 K&N, 3.42 gears,
Eibach springs with KYB's all around,
Harwood cowl hood, Z-28 wing, fresh paint(black)
120,000 miles, 5spd, T-tops
Run a best of 16.7 @85mph before gears

92 RS, 305TBI, auto, 3.08 gears, 180 thermo, glasspack (no muffler)

 

TAS--I can't get my scanner to do anything right.I have a friend coming over in a couple days to fix,then I'll post some pics.
And I believe factory set timing for our cars is 0* at idle with the EST connected.Be sure to unplug the EST before you check the timing.

 

The extra base gasket is to use when you make your tbi spacer. You have to have a gasket on top and bottom of the spacer. Anyone else have any other recommendations for this job?

 

Timing guns are pretty easy. You need to mark degrees on your damper, or buy tape for it. Then you clip a plug of the gun to the spark plug wire and the other plug of the gun you clip to the battery and adjust as neccesary. Sorry I don't have any specifics, I've seen it done a few times at the dealership I work at. Oh and make sure if your car is carbed to disconnect the vacuum advance. Don't quote me on this one, read the instruction manual.