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Third Generation F-Body Message Boards
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TBI
TBI
Throttle Body Injection discussion and questions. L03/CFI tech and other performance enhancements.
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Important/Useful :
Notes and information on converting to a TBI PCM
(
1
2
)
Fast355
on Sep 29, 2007
May 29, 2026
09:52 PM
by
sleeper84
74
58,650
Important/Useful :
How to: 305 To 350 swap....everything you need to know
(
1
2
3
4
5
...
Last Page
)
BMmonteSS
on Jul 28, 2006
Jul 21, 2022
01:09 PM
by
Tuned Performance
393
480,956
Important/Useful :
High performance TBI, what do I need?
iamnitrox
on Nov 27, 2006
Feb 25, 2018
01:41 PM
by
F Body guy
26
69,800
Important/Useful :
LT1 cam digest (the ultimate one)
(
1
2
3
)
ShiftyCapone
on Oct 5, 2004
Dec 3, 2016
11:30 PM
by
Fast355
104
207,330
Important/Useful :
TBI and TPI heads: headflow data
kdrolt
on Dec 19, 2005
Nov 19, 2016
05:20 PM
by
cosmick
41
136,443
Important/Useful :
BUDGET TBI BUILDUP
(
1
2
3
)
Fast355
on Oct 12, 2006
Mar 25, 2016
03:47 AM
by
keithnh
129
161,053
Important/Useful :
TBI MAF code and FAQ
(
1
2
)
dimented24x7
on Apr 19, 2008
Sep 27, 2015
12:21 PM
by
heg1ll
53
34,645
Important/Useful :
Come in for a FREE tune!!!!
(
1
2
3
4
5
...
Last Page
)
BMmonteSS
on Mar 29, 2006
Oct 24, 2011
10:58 AM
by
EagleMark
446
145,866
Important/Useful :
Common TBI Mods and Info (LT1 Cam, Open Element, Base Timing, etc.)
dimented24x7
on Oct 18, 2004
Dec 17, 2004
01:59 AM
by
90RS305
1
52,087
Important/Useful :
Advanced Topics in TBI Theory, Performance, and Tuning
ShiftyCapone
on Aug 30, 2004
Sep 28, 2004
08:52 PM
by
90RS305
1
55,005
Important/Useful :
New to TBI? CHECK THIS OUT!! *UPDATED*
90RS305
on Mar 5, 2004
Sep 20, 2004
10:56 PM
by
dimented24x7
8
249,432
Normal Threads
1989 LO3 Camaro Tuning
sleeper84
on May 5, 2026
Yesterday
05:56 PM
by
sleeper84
16
701
dyno results for 305 head swap on lo5 tbi
ironroad9c1
on Feb 10, 2005
Jun 1, 2026
03:04 PM
by
fullsize fun
32
8,691
CFI help
cc+ca
on May 23, 2026
May 29, 2026
09:37 AM
by
Tom 400 CFI
30
681
crossfire intake manifold porting
(
1
2
3
)
mike1111
on Aug 16, 2024
May 23, 2026
11:30 AM
by
mike1111
105
8,398
Renegade Update
Buccaneer
on Sep 6, 2025
May 23, 2026
11:24 AM
by
Tom 400 CFI
15
931
Fuel Pump Recommendation for 305 TBI
Smykster
on Apr 27, 2026
May 15, 2026
08:54 PM
by
Ghettobird52
2
214
Howell EFI Buick 231 1983
BoogerMike
on Apr 11, 2026
Apr 12, 2026
04:04 PM
by
Tuned Performance
1
191
Intermittent Trouble Starting, Starts and dies. Video fuel pressure test
Smykster
on Mar 30, 2026
Mar 30, 2026
11:46 AM
by
Smykster
2
184
Bad EGR?? Rough Idle
Jardin M. Bell
on Mar 21, 2026
Mar 21, 2026
12:01 PM
by
Airwolfe
1
197
beefing up a 305
#dirtyeyez
on Mar 17, 2026
Mar 20, 2026
06:47 AM
by
#dirtyeyez
13
626
Poor Acceleration / Stall under load
(
1
2
)
Ballancers
on Feb 3, 2026
Mar 13, 2026
04:25 PM
by
Miketee
74
2,180
Header Installation
matt6simmo
on Feb 4, 2026
Feb 19, 2026
09:42 PM
by
Ballancers
6
431
New Heads/Engine Painting.
Firebirds
on Jan 24, 2026
Feb 1, 2026
12:24 PM
by
gbeaird
5
382
1989 7747 tuning help
My71bmf
on Jan 7, 2026
Jan 8, 2026
12:05 PM
by
My71bmf
1
229
Running Rich, I'm Guessing This Injector is leaky? (Video)
Smykster
on Dec 25, 2025
Jan 1, 2026
02:50 PM
by
Buccaneer
1
176
2.5 Vacuum Issues
1982IronDuke
on Jan 5, 2025
Dec 18, 2025
04:16 AM
by
Mountain383
15
577
How to add an external adjustable fuel pressure regulator to TBI easily
Spaceboy1980
on Aug 8, 2014
Dec 9, 2025
04:34 PM
by
Tom 400 CFI
8
8,348
5.0L CFI Engine on CL
stew'86MCSS396
on Oct 4, 2025
Nov 16, 2025
05:07 AM
by
83 Crossfire TA
33
1,145
Vacuum Leak or Normal?
Jardin M. Bell
on Oct 21, 2025
Oct 22, 2025
06:48 PM
by
Tom 400 CFI
4
403
TPS Code 22 Dies when warm
IceBucket
on Oct 14, 2025
Oct 15, 2025
07:57 PM
by
Schurkey
2
255
91 305 TBI cranks, no fuel, no spark
hughglass
on Oct 4, 2025
Oct 6, 2025
10:55 PM
by
Airwolfe
5
370
What's the best TBI kit available?
Vhanta97
on Jan 21, 2025
Oct 6, 2025
05:25 PM
by
Schurkey
3
1,070
Worth swappig from TPI to TBI when not making ridiculous power?
Ryan Macadam
on Sep 28, 2025
Sep 29, 2025
09:38 AM
by
jmd
4
467
Best budget TBI kits
Vhanta97
on Sep 26, 2025
Sep 28, 2025
10:56 PM
by
Airwolfe
8
675
Tbi injectors won't pulse
Mintymoto's
on Sep 16, 2025
Sep 18, 2025
04:23 PM
by
Airwolfe
12
452
No Click starter 91 TBI v8 5.0
Biffle87
on Aug 31, 2025
Aug 31, 2025
06:30 PM
by
Biffle87
2
210
Tuning a new cam, hints/tips
ajbutowicz
on Jul 24, 2005
Aug 28, 2025
07:55 PM
by
My71bmf
27
15,280
TPS Voltage
camarorsssss
on May 29, 2025
Aug 24, 2025
07:56 PM
by
camarorsssss
27
1,197
1989 camaro 305 tbi massive engine surge idle and driving.
metalhead8711
on Apr 19, 2024
Aug 15, 2025
10:04 PM
by
metalhead8711
27
2,621
305 1.6 rockers
Milk7504
on Jul 28, 2025
Aug 9, 2025
10:25 PM
by
Schurkey
4
627
Help identifying part
Bcmagoofan
on Aug 1, 2025
Aug 9, 2025
10:18 PM
by
Schurkey
4
343
Fuel pump issues
rnaygarcia
on Aug 3, 2025
Aug 9, 2025
09:58 PM
by
Schurkey
4
486
Engine Power 305 vs 302 and the 305 Vortec Head Debate
seanof30306
on Mar 14, 2025
Aug 3, 2025
11:12 AM
by
Tom 400 CFI
26
1,693
I need help from all the Pros which is you guys
FarFromApathy
on Jul 17, 2025
Jul 18, 2025
09:04 PM
by
Berlinetta00
7
910
Questions for removing PS valve cover on 84 TA
battmann
on Jul 7, 2025
Jul 8, 2025
10:27 AM
by
battmann
2
314
92 RS Drivability Issue
harveydad711
on Jul 4, 2025
Jul 7, 2025
03:45 AM
by
stew'86MCSS396
6
506
1226026 conversion direct to 16197427 or 16168625
Albekirky07
on Jul 5, 2025
Jul 5, 2025
10:19 PM
by
Tuned Performance
1
370
89 305 tbi
cb305
on Jun 19, 2025
Jun 20, 2025
08:29 AM
by
Tuned Performance
2
392
HIGH IDLE 1700+ RPM 92 Camaro 5.0L TBI Automatic
(
1
2
3
4
)
Camaro*92
on May 15, 2025
Jun 18, 2025
01:47 PM
by
Camaro*92
160
3,846
Running Crossfire with 7730 ECM
broke91firebird
on Jun 10, 2025
Jun 10, 2025
09:51 PM
by
Tuned Performance
1
237
Smog parts
Firebirds
on Jun 2, 2025
Jun 8, 2025
12:13 AM
by
gt4373
9
519
WBO2 Calculation Spreadsheet
scooterwrench
on Jun 2, 2025
Jun 2, 2025
12:31 PM
by
scooterwrench
0
220
Fuel sending unit
84maroguy
on May 30, 2025
May 30, 2025
12:53 PM
by
naf
6
417
LO3 To L30 Vortec Swap: Completed(Mostly)
(
1
2
3
4
5
...
Last Page
)
RS-Chevy-SS
on Feb 3, 2014
May 20, 2025
12:41 AM
by
RS-Chevy-SS
593
72,783
Dripping fuel while driving.
MarkyMark425
on May 18, 2025
May 20, 2025
12:34 AM
by
pirateofms
8
474
Formula open hood scoop and flipped lid?
Karsty
on Jul 28, 2023
May 12, 2025
12:22 PM
by
dmccain
11
1,107
TBI Intake Coolant Passages
BOOT77
on May 13, 2024
May 11, 2025
08:03 AM
by
Run it
8
2,658
Different intake setup
1988CamaroSC
on May 25, 2016
May 10, 2025
11:22 PM
by
Firebird305ws6
8
1,499
TBI MAF
scooterwrench
on May 7, 2025
May 7, 2025
01:41 PM
by
scooterwrench
0
375
Injector signals
Tony Scotland
on May 1, 2025
May 3, 2025
04:20 AM
by
Tony Scotland
5
452
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