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Third Generation F-Body Message Boards
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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
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3
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5
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Last Page
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Acceld Z
on Jan 6, 2005
Jan 13, 2025
03:01 PM
by
newbvetteguy
321
138,955
Important/Useful :
Quest for a better flowing TPI
(
1
2
3
4
5
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Last Page
)
Dyno Don
on Feb 17, 2008
Sep 27, 2024
09:54 PM
by
MrIROBZ
353
140,187
Important/Useful :
Repinning TBI to Speed Density TPI
(
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3
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5
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anesthes
on Dec 29, 2003
Oct 29, 2023
02:10 AM
by
stew'86MCSS396
365
134,935
Important/Useful :
Attention ALL TPI owners...inside please...
(
1
2
3
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5
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Last Page
)
KYL98
on Sep 25, 2003
Sep 19, 2023
05:03 PM
by
mikeceli
255
135,664
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
76,566
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
129,107
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
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S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
326,818
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
47,174
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
83,940
Normal Threads
1990 305 TPI Fuel Pressure Bleed Off
TylerM27
on Jun 12, 2025
Jun 19, 2025
08:23 PM
by
Vanilla Ice
1
538
Is it good for a street build?
Vhanta97
on Jun 14, 2025
Jun 14, 2025
03:19 PM
by
Vhanta97
7
622
SLP cold air intake filter
Gunmetal87
on Jun 10, 2025
Jun 12, 2025
02:34 PM
by
LAFireboyd
8
777
High-flow TPI Camaro air lid
(
1
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5
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1bad91Z
on Aug 10, 2007
Jun 3, 2025
06:42 AM
by
Nsty_6.2
235
66,253
Rough idle, searching (kinda) idle, vibration while accelerating. Help needed!
Calyps0
on May 26, 2025
Jun 2, 2025
12:46 PM
by
Bald_eagle_machine
8
599
Seymour Spruce nickel spray paint for valve covers?
Mikos_89
on May 28, 2025
May 31, 2025
11:36 AM
by
LiquidBlue
1
501
MAF Sensor
Jayess
on May 28, 2025
May 29, 2025
12:44 PM
by
Jayess
2
517
Struggling With Injectors Not Firing
crazycasey
on Apr 23, 2025
May 25, 2025
09:55 AM
by
Don Fetherolf
14
1,269
Part number help PLEASE!!
Chevelle505
on May 15, 2025
May 24, 2025
01:05 PM
by
Tuned Performance
5
643
Greetings-Need help with poor/rough idle, car dies when given some throttle
Wildgoosey24
on May 22, 2025
May 24, 2025
09:46 AM
by
Tuned Performance
8
805
intake plenum
89 formula TPI
on Jul 15, 2013
May 23, 2025
11:33 PM
by
Jayess
16
22,314
Never mind.
Airwolfe
on May 16, 2025
May 18, 2025
03:30 PM
by
jmd
8
687
Introduction, My Budget Build, And Questions For TPI Gurus
BudgetBird
on May 9, 2025
May 15, 2025
03:59 PM
by
BudgetBird
9
874
Which brand of MAF sensor is good for a 88 formula with a 305?
Penguin James
on May 10, 2025
May 14, 2025
08:38 AM
by
Simsalas
4
741
TPI Combo - Low Dyno Results
(
1
2
3
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SixSeriesCSi
on Jan 6, 2015
May 11, 2025
09:45 PM
by
SixSeriesCSi
127
23,511
Measurement request - throttle pedal for 1985-88 TPI Camaro
ULTM8Z
on May 4, 2025
May 9, 2025
11:40 AM
by
ULTM8Z
9
1,065
No injector pulse
dudeman66
on Feb 25, 2011
May 8, 2025
08:22 PM
by
Tim mac
14
20,035
Lb9 swap
Bria
on May 2, 2025
May 8, 2025
07:27 PM
by
Vader
9
708
Problem with car that runs rough
HannuZ28
on May 4, 2025
May 7, 2025
02:11 AM
by
HannuZ28
6
600
11.9 volts only at the pump
Prem1032
on May 2, 2025
May 5, 2025
10:47 PM
by
ratfink6923
5
563
Fuel Pump Intermittent
pantherbacker09
on Mar 14, 2025
May 3, 2025
02:56 PM
by
bennettcvcu
7
744
Fuel smell in car
grove
on Apr 27, 2025
May 3, 2025
02:23 PM
by
grove
13
831
50-80mph in 2.5 seconds.
ZZ42Fast
on Apr 25, 2025
May 3, 2025
09:37 AM
by
ZZ42Fast
11
791
Lb9 swap
Bria
on May 2, 2025
May 2, 2025
08:59 PM
by
Bria
0
330
Help troubleshooting 350 TPI, has no power and backfires
crazyd
on Apr 20, 2025
Apr 26, 2025
10:59 AM
by
crazyd
18
1,233
rebuilding TPI throttle body?
ULTM8Z
on Feb 24, 2020
Apr 26, 2025
07:28 AM
by
aliceempire
15
6,811
Chip burner
Noble1
on Apr 20, 2025
Apr 20, 2025
07:05 AM
by
Noble1
0
448
Dadgum starting issues. Please help. I am losing my ever loving mind!!
SocietyZ3r0
on Apr 14, 2025
Apr 15, 2025
10:53 PM
by
mikeceli
15
790
new MAF code 34, but runs amazing?
lakeport
on Jul 18, 2014
Apr 11, 2025
03:14 AM
by
Simsalas
26
3,582
TPI CHIP BURNINER
Tinbender59
on Apr 8, 2025
Apr 10, 2025
07:46 PM
by
LeeH
7
804
Low Bouncing Idle on 1989 Pontiac Trans Am GTA
DoniZ_22
on Apr 7, 2025
Apr 10, 2025
11:09 AM
by
RottenThomas
19
916
5.7 tpi idles high 1100 rpms and puts gas into oil mpan
Cplpun
on Apr 8, 2025
Apr 8, 2025
09:40 PM
by
RottenThomas
5
603
Spark Plug Wires for !AIR
Eightyninef
on Apr 6, 2025
Apr 6, 2025
10:28 PM
by
Eightyninef
0
414
Does Anyone Have the Part Number for the MAF Relays and Fuel Pump Relays
Vinscully50
on Oct 22, 2021
Apr 5, 2025
04:03 AM
by
Derrick J
14
4,871
Cable length for TPI?
Chevelle505
on Apr 3, 2025
Apr 4, 2025
12:21 AM
by
John in RI
4
463
10.8 MPG
Eightyninef
on Mar 28, 2025
Mar 30, 2025
06:35 AM
by
Eightyninef
4
569
TPI Intake bolt size location
mapwpdiroc
on Mar 24, 2025
Mar 27, 2025
08:12 PM
by
Tuned Performance
8
1,292
My custom ported H/C/I L98 refresh thread
(
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5
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Last Page
)
MrIROBZ
on Apr 6, 2024
Mar 22, 2025
12:08 AM
by
Z28Juliet
399
22,900
Valve seal question for L98
Dukesuave
on Mar 14, 2025
Mar 19, 2025
02:58 PM
by
350Iroc89
10
1,233
Help with 86 Iroc distributor issue
86IrocJoc
on Mar 16, 2025
Mar 16, 2025
02:23 PM
by
86IrocJoc
5
524
305 tpi mt throttle hesitation off idle
admjgreer
on Mar 21, 2022
Mar 15, 2025
07:31 AM
by
F-body-fan
13
1,976
Bad O2 sensor?
EDGE
on Mar 7, 2025
Mar 14, 2025
06:22 PM
by
Airwolfe
5
663
Fuel pump screaming or noisey
IROC406
on Mar 13, 2025
Mar 14, 2025
06:13 PM
by
EDGE
3
595
Injectors
rtbrodeur
on Mar 12, 2025
Mar 12, 2025
11:06 PM
by
Tuned Performance
3
606
L98 TPI - How to tell the difference on supply and return steel lines
djmarch
on Mar 10, 2025
Mar 10, 2025
09:16 PM
by
TTOP350
3
523
1985 IROC-Z28 305 TPI LB9
meh2004
on Aug 16, 2012
Mar 10, 2025
05:09 AM
by
Airwolfe
8
17,954
Hawks Motorsports - Reproduction "SLP Style" Dual Cold Air Induction System
Airwolfe
on Dec 29, 2024
Feb 27, 2025
10:07 PM
by
Tom 400 CFI
30
2,749
87’ iroc z
BacRoads864
on Feb 24, 2025
Feb 24, 2025
10:50 PM
by
Vader
1
409
need TPI electrical clip! Help!
BrianChevy
on Feb 18, 2025
Feb 19, 2025
08:10 PM
by
BrianChevy
9
770
Car usually won’t start without starting fluid, runs fine after
Merrick102
on Feb 6, 2025
Feb 13, 2025
06:14 PM
by
1989karr
2
567
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