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Third Generation F-Body Message Boards
Tech Boards
TPI
TPI
Tuned Port Injection discussion and questions. LB9 and L98 tech, porting, tuning, and bolt-on aftermarket products.
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Important/Useful :
TPI shootout in Feb Super Rod magazine
(
1
2
3
4
5
...
Last Page
)
Acceld Z
on Jan 6, 2005
Jan 13, 2025
03:01 PM
by
newbvetteguy
321
138,406
Important/Useful :
Quest for a better flowing TPI
(
1
2
3
4
5
...
Last Page
)
Dyno Don
on Feb 17, 2008
Sep 27, 2024
09:54 PM
by
MrIROBZ
353
139,708
Important/Useful :
Repinning TBI to Speed Density TPI
(
1
2
3
4
5
...
Last Page
)
anesthes
on Dec 29, 2003
Oct 29, 2023
02:10 AM
by
stew'86MCSS396
365
134,218
Important/Useful :
Attention ALL TPI owners...inside please...
(
1
2
3
4
5
...
Last Page
)
KYL98
on Sep 25, 2003
Sep 19, 2023
05:03 PM
by
mikeceli
255
135,367
Important/Useful :
BANNED TOPICS... once again, EVERYONE READ
(
1
2
)
Ed Maher
on Feb 27, 2003
Jul 15, 2023
08:25 PM
by
Tuned Performance
76
76,455
Important/Useful :
LS1 Coil per Cylinder Conversion - Are you ready?
(
1
2
3
)
S10Wildside
on Nov 8, 2008
Jul 1, 2023
10:31 AM
by
Duane's 91 Z/28
145
128,667
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
2
3
4
5
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Last Page
)
S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
325,526
Important/Useful :
*EVERYONE READ* FAQ / Index for the TPI board
Ed Maher
on Dec 26, 2002
Jul 10, 2015
10:00 AM
by
RED85TPI
30
47,101
Important/Useful :
'Performance Proms' , also TPS enhancer snake oil, and other chip basics
(
1
2
3
)
Drew ATX
on May 4, 2002
Feb 13, 2014
01:09 PM
by
Tuned Performance
130
83,807
Normal Threads
Trick Flow cylinder heads
Ironmike77
on Aug 9, 2020
Aug 10, 2020
10:36 PM
by
GeneralDisorder
29
1,334
Code 54 and Fuel Pump not priming
Mark4
on Aug 4, 2020
Aug 8, 2020
08:44 AM
by
RBob
3
1,111
Intake manifold gaskets
Ironmike77
on Aug 6, 2020
Aug 7, 2020
08:18 AM
by
Ironmike77
6
593
PLEASE HELP
Tim Eaton
on Aug 5, 2020
Aug 6, 2020
11:48 AM
by
Tootie Pang
8
587
HEI Dis Ig with TPI
1badcj8
on Aug 4, 2020
Aug 5, 2020
09:59 PM
by
GeneralDisorder
7
516
Bogging TPI 305
Speedy Mike
on Aug 4, 2020
Aug 5, 2020
12:48 AM
by
Speedy Mike2
1
371
91+ ASM Runners on an 88?
KyleF
on Aug 4, 2020
Aug 4, 2020
06:56 PM
by
TTOP350
2
357
Bad TPS?
Ironmike77
on Aug 3, 2020
Aug 4, 2020
06:49 PM
by
Ironmike77
16
666
91 formula 305 tpi idle pulse and stall
Dirty_Duke
on Aug 4, 2020
Aug 4, 2020
04:05 PM
by
Dirty_Duke
0
514
1991 Z/28 5.7 TPI Throttle Response
Austinkalar
on Aug 6, 2019
Aug 4, 2020
02:54 PM
by
KyleF
7
2,578
just a thought
rdaggett
on Feb 2, 2007
Aug 4, 2020
08:26 AM
by
KyleF
10
1,712
Messes up
Ironmike77
on Jul 29, 2020
Aug 1, 2020
03:46 PM
by
Ironmike77
15
950
87 IROC-Z with boiling gas
scottmoyer
on Nov 7, 2016
Aug 1, 2020
01:11 PM
by
alan91z28
19
4,506
91 tpi only starts with gas when hot and stalls
Dirty_Duke
on Jul 27, 2020
Jul 31, 2020
07:07 PM
by
Dirty_Duke
9
438
Will renew intake manifold gasket - what other parts do I order?
babyelephant
on Jul 23, 2020
Jul 31, 2020
06:47 AM
by
babyelephant
6
542
Making fuel lines
jack1012t
on Jul 13, 2020
Jul 30, 2020
04:01 PM
by
dan5
18
822
Does Anyone Elses Car Seem to Run Better With a Full Tank and on Ethanol Free Gas
Vinscully50
on Jul 28, 2020
Jul 28, 2020
10:23 PM
by
Vinscully50
2
408
"Take That TPI Off and Throw a Carburetor On There!"
Vinscully50
on Jul 13, 2020
Jul 28, 2020
06:05 PM
by
Tootie Pang
44
3,650
Cross threaded plenum
Ironmike77
on Jul 27, 2020
Jul 27, 2020
08:13 PM
by
Ironmike77
6
391
Injector/ECU question(s)
Jetlogan
on Jul 26, 2020
Jul 26, 2020
08:57 PM
by
GeneralDisorder
5
582
Need correct cable for old style throttle body TPI
Tootie Pang
on Jul 25, 2020
Jul 26, 2020
06:41 PM
by
Tootie Pang
2
292
Simple Firebird SD TPI cold air mod
rt66er
on Jul 26, 2020
Jul 26, 2020
01:03 PM
by
CKone
1
512
Manifold Issue
cam1116
on Jul 26, 2020
Jul 26, 2020
11:52 AM
by
cam1116
0
218
91 formula 305 tpi bad pickup coil? Intermittent stall.
Dirty_Duke
on Jul 25, 2020
Jul 26, 2020
10:29 AM
by
Dirty_Duke
4
712
No wide open throttle
87350gtanj
on May 30, 2020
Jul 26, 2020
07:45 AM
by
vinny R
2
638
Recurring code 42/ Electronic spark timing error
Dirty_Duke
on Jul 17, 2020
Jul 25, 2020
09:25 PM
by
Dirty_Duke
5
436
Replaced fuel regulator
Ironmike77
on Jul 25, 2020
Jul 25, 2020
03:29 PM
by
Ironmike77
6
394
rough idle, tried everything..need help!
(
1
2
)
camaropower88
on May 24, 2011
Jul 25, 2020
01:48 PM
by
Reddragon88gta
72
35,351
Engine hesitation and surges at highway speeds
ozzie280
on Jul 19, 2020
Jul 24, 2020
07:41 PM
by
GeneralDisorder
5
3,229
Surging in Drive and Park. TPI wizards needed
JimmyV14
on Jul 12, 2020
Jul 20, 2020
05:23 PM
by
rt66er
23
975
Fuel pressure regulator vacuum leaking gas.
Ironmike77
on Jul 18, 2020
Jul 20, 2020
01:12 PM
by
Ironmike77
6
6,835
383 stroker lpe219 cam first performance intake
my hemi
on Jul 19, 2020
Jul 19, 2020
05:04 PM
by
my hemi
2
577
I have a V-Belt 305, How Easy Would it Be to Swap to a Reman L31?
Vinscully50
on Jul 17, 2020
Jul 17, 2020
05:34 PM
by
aliceempire
1
438
The 89 iroc is home
my hemi
on Jul 16, 2020
Jul 17, 2020
01:45 PM
by
WildCard600
1
438
s10 multi port upgrade
Wingnut81
on Jul 13, 2020
Jul 17, 2020
11:09 AM
by
2knight
2
436
Engine bogs between gears
Tim Eaton
on Jul 14, 2020
Jul 17, 2020
08:13 AM
by
ULTM8Z
5
322
Distributor recommendations?
goalieforlife
on Jul 14, 2020
Jul 17, 2020
04:06 AM
by
J.C. Denton
14
775
Poll
1989+ TPI: Have you had to replace your injectors, and why?
Big&BadGTA
on Nov 4, 2017
Jul 15, 2020
05:11 PM
by
Tuned Performance
22
6,531
Charcoal Canister
Tony Sanchez
on Jul 14, 2020
Jul 14, 2020
10:20 PM
by
Fred SS
2
423
Has anyone here converted to a later IAC?
GCrites80s
on Jul 2, 2020
Jul 13, 2020
09:05 PM
by
GCrites80s
12
734
Tpi reliability
ToolGuru
on Jun 13, 2020
Jul 12, 2020
07:12 PM
by
SbFormula
39
3,228
TPI Plenum Porting - Where To Go (Canada)
K-pup
on Jun 20, 2020
Jul 12, 2020
06:26 PM
by
ToolGuru
9
2,015
Which Cap and Rotor and Ignition Coil Should I Use?
Vinscully50
on Jul 5, 2020
Jul 11, 2020
08:20 PM
by
dan5
4
3,393
TPI Fuel Rail part numbers
jack1012t
on Jul 11, 2020
Jul 11, 2020
08:18 PM
by
jack1012t
1
1,391
Confirm injector size for 305
VA1991Z28
on Aug 16, 2005
Jul 11, 2020
05:54 PM
by
Fast355
13
11,275
1986 Z28 TPI value?
codyclmn9
on Sep 5, 2017
Jul 8, 2020
07:45 PM
by
jharrison5
5
993
Codes 33 & 36 what can I do to fix it!!
tpi81
on Jun 17, 2010
Jul 8, 2020
04:27 PM
by
Tony Sanchez
25
26,953
No start
nomind
on Jul 4, 2020
Jul 8, 2020
02:20 PM
by
aliceempire
4
421
Fuel rail thread size LB9 305
Tim Newton
on Jul 6, 2020
Jul 6, 2020
10:23 PM
by
Tim Newton
0
272
Stalling issue
Ironmike77
on Jul 3, 2020
Jul 5, 2020
01:28 AM
by
GeneralDisorder
6
411
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