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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
138,546
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
139,845
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
134,414
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
135,436
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
76,486
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
128,822
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
2
3
4
5
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)
S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
325,966
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
47,131
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
83,827
Normal Threads
305 tpi heads, cam, runners?
macneilbibi
on Sep 8, 2010
Sep 11, 2010
10:39 PM
by
sack23
8
2,240
Need some initial tuning advice
Artisan
on Sep 9, 2010
Sep 11, 2010
10:12 PM
by
Orr89RocZ
3
500
It always started fine... untill today.
james94
on Sep 3, 2010
Sep 11, 2010
08:12 PM
by
james94
13
580
all 4 Passenger side fuel injectors don't pulse
mandre74
on Sep 10, 2010
Sep 11, 2010
04:19 PM
by
mandre74
5
759
87 Iroc LB9 305 TPI Build ?
Banksy
on Aug 29, 2010
Sep 11, 2010
02:45 PM
by
87IROC-DAN61
8
5,545
89 GTA Trans am 350 TPI
WTFxxxAnthony
on Sep 10, 2010
Sep 11, 2010
12:23 PM
by
transam85dudeman
1
1,185
TPI to run mid 13s with bolt ons?
faster1k
on Sep 11, 2010
Sep 11, 2010
12:07 PM
by
faster1k
0
520
On/off bad idle and engine cutting off
raycer
on Sep 11, 2010
Sep 11, 2010
08:23 AM
by
9manastacio
1
786
L98 assembly?
jfroh1992
on Sep 5, 2010
Sep 10, 2010
11:12 PM
by
jfroh1992
2
815
was there a difference from 88/92 TPI intakes??
DEAD SPACE
on Sep 8, 2010
Sep 10, 2010
11:07 PM
by
lunaticinaZ
6
776
swaping a TPI intake manifold
Frank D
on Aug 22, 2010
Sep 10, 2010
07:47 PM
by
Frank D
2
684
How much HP!
pestrada38
on Sep 9, 2010
Sep 10, 2010
06:52 PM
by
86firebirdta
10
1,485
building street 383, head size? cam selection? guru's help!
Brisk
on Jul 6, 2010
Sep 10, 2010
06:18 PM
by
85Iroc-Z
9
5,590
starts runs then shuts down?????
JO-MARO
on Sep 10, 2010
Sep 10, 2010
06:03 PM
by
Chevy86 IROC-Z
1
837
LS Springs and 081 Heads
MuhThugga
on Sep 10, 2010
Sep 10, 2010
04:35 PM
by
MuhThugga
0
642
383 HSR build
robg91z
on Sep 2, 2010
Sep 9, 2010
11:06 PM
by
robg91z
14
2,899
Which spark plugs should I get???
david068513
on Jul 31, 2010
Sep 9, 2010
10:58 PM
by
david068513
14
1,630
1989 iroc 350 please help!!!
91convertable
on Sep 9, 2010
Sep 9, 2010
03:36 PM
by
91convertable
0
379
Best Companies for Head porting.
Fermin91rs305
on Sep 8, 2010
Sep 9, 2010
02:55 PM
by
Orr89RocZ
1
1,086
almost there! (pics)
Skyshadow
on Sep 6, 2010
Sep 9, 2010
12:43 PM
by
Skyshadow
4
616
Just a heads up on my fix for my misfire
NY87Iroc
on Aug 28, 2010
Sep 8, 2010
08:27 PM
by
J91
2
651
replacing a fuel pressure regulator
WILL85IROC
on Aug 30, 2010
Sep 8, 2010
08:24 PM
by
WILL85IROC
2
983
Have APU1 AutoProm Package
DaNewmanator
on Sep 7, 2010
Sep 8, 2010
10:14 AM
by
DaNewmanator
2
1,463
short video clip of my hotcammed tpi engine
88fastgta
on Sep 7, 2010
Sep 8, 2010
12:03 AM
by
Tony89GTA
6
793
L98 or LS1
5.7TPICHUY
on Sep 3, 2010
Sep 7, 2010
08:47 AM
by
Pocket
13
1,246
Is OBD2 TPI possible without sequential injection?
evilstuie
on Dec 10, 2009
Sep 7, 2010
08:23 AM
by
Pocket
17
5,457
Backfire
pestrada38
on Sep 6, 2010
Sep 6, 2010
10:06 PM
by
pestrada38
0
446
Adding Low end
rscamaro305
on Sep 6, 2010
Sep 6, 2010
09:11 PM
by
watajob
1
584
305 or 350
Skyshadow
on Sep 5, 2010
Sep 6, 2010
08:35 PM
by
okfoz
29
2,509
I have a starting issue..
jonnybcamaro
on Aug 23, 2010
Sep 6, 2010
08:28 PM
by
Eagle223usa
7
594
INSTALLED MY SUPERRAM...NO NOTICABLE GAIN!!??
zya5point0
on Sep 6, 2010
Sep 6, 2010
07:56 PM
by
1989GTATransAm
2
732
Will this cam make a difference?
SovereignDragon
on Sep 6, 2010
Sep 6, 2010
07:46 PM
by
SovereignDragon
5
739
89 Iroc 5.0 won't start
smartnluckie
on Sep 4, 2010
Sep 6, 2010
05:24 PM
by
smartnluckie
5
797
Holding back
alek72us
on Aug 30, 2010
Sep 6, 2010
01:49 PM
by
alek72us
2
621
Strange problem?
protestthehero
on Sep 5, 2010
Sep 5, 2010
07:49 PM
by
protestthehero
0
462
91 L98 wont start(dead computer?)
Toyota h8r
on Feb 27, 2009
Sep 5, 2010
01:30 PM
by
JO-MARO
49
15,463
Hey Guys! New here...
88PontiacT/A
on Sep 5, 2010
Sep 5, 2010
01:15 AM
by
88PontiacT/A
0
391
fuel pressure high results in code 42?
9manastacio
on Sep 4, 2010
Sep 4, 2010
10:07 PM
by
red rock
3
569
350 tpi
jfroh1992
on Sep 4, 2010
Sep 4, 2010
09:59 PM
by
vetteoz
4
674
TPI trouble HELP!!!
Enzo1989
on Sep 4, 2010
Sep 4, 2010
07:34 PM
by
Enzo1989
2
734
Best budget aluminum heads for First TPI
lkefthrlkeson
on Sep 1, 2010
Sep 4, 2010
07:09 PM
by
Orr89RocZ
27
21,226
Best Cam and Heads
8996chevy
on Sep 4, 2010
Sep 4, 2010
01:01 PM
by
88gta3508
1
723
LB9 head flow
SovereignDragon
on Sep 4, 2010
Sep 4, 2010
09:59 AM
by
SovereignDragon
0
823
86 stock tune cam
jameskilcer
on Aug 22, 2010
Sep 4, 2010
09:11 AM
by
jameskilcer
4
739
High RPM rev on start up
joshwilson3
on Jul 24, 2010
Sep 4, 2010
07:07 AM
by
J91
24
24,321
'88 IROC LB9 Runs Perfect for Hours....then won't START!
Racer X79
on Sep 1, 2010
Sep 3, 2010
11:25 PM
by
Racer X79
6
1,771
Plumbing in MAP sensor
transamice
on Sep 3, 2010
Sep 3, 2010
10:35 PM
by
vetteoz
1
940
DIY tpi runner mod
Cadmaro
on Dec 27, 2009
Sep 3, 2010
07:15 PM
by
Artisan
6
2,679
tpi 350 ram air?
9manastacio
on Aug 31, 2010
Sep 3, 2010
06:50 PM
by
Maeryk
9
845
45 Pound injectors on 383 stock tpi intake?
tomtom420
on Sep 3, 2010
Sep 3, 2010
05:54 PM
by
tomtom420
2
903
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