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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
2
3
4
5
...
Last Page
)
Acceld Z
on Jan 6, 2005
Jan 13, 2025
03:01 PM
by
newbvetteguy
321
139,189
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
140,460
Important/Useful :
Repinning TBI to Speed Density TPI
(
1
2
3
4
5
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Last Page
)
anesthes
on Dec 29, 2003
Oct 29, 2023
02:10 AM
by
stew'86MCSS396
365
135,338
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
135,893
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
76,650
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
129,414
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
2
3
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5
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Last Page
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S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
327,483
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
47,210
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
84,038
Normal Threads
Chasing the forbidden Idle curse
closer
on May 24, 2026
Today
09:34 AM
by
Mikos_89
19
457
The mystery bolt thread.
(
1
2
)
goldandblue
on May 6, 2026
Yesterday
08:29 PM
by
Tuned Performance
56
1,328
Advice for 86 305TPI sitting for 25+ years
Z28revival
on May 26, 2026
Yesterday
06:45 PM
by
Tom 400 CFI
13
420
1987 Pontiac Trans AM Fuel Line
1989IROCTPI
on May 27, 2026
May 27, 2026
04:57 PM
by
Firechicken82
3
138
Tpi1992 wireing and pin out ore schematics pleas help!!!
Leedoetcamaro
on May 22, 2026
May 22, 2026
05:53 PM
by
Tuned Performance
5
195
Full Overhaul!
Karl_Schuler
on Apr 24, 2026
May 21, 2026
10:09 AM
by
bk2life
6
521
88 Irocz
xtrmfirebird
on May 20, 2026
May 20, 2026
06:34 PM
by
southbay
8
177
Oil Pressure Sending Unit cause stalling?
DigitalDan3
on May 18, 2026
May 20, 2026
11:55 AM
by
kmac1036
3
213
What is the Max PSI of the stock 86 EFI TPI Pump
iceman383ja
on May 18, 2026
May 19, 2026
10:10 PM
by
iceman383ja
3
238
Cold start issue
exiled350
on Mar 29, 2026
May 17, 2026
02:38 PM
by
exiled350
23
695
89 GTA crate shortblock?
Gunmetal89GTA
on Jan 12, 2025
May 13, 2026
09:36 AM
by
Firechicken82
27
1,873
Which Injectors to get from Southbay?
goldandblue
on Jan 6, 2026
May 5, 2026
11:59 PM
by
Komet
16
871
Tpi looked stock but had ridiculous amount of power. How is this possible
(
1
2
)
Iroc8t8
on Aug 7, 2015
May 4, 2026
08:09 PM
by
wolf_walker
53
22,933
Just wiping the dust off
(
1
2
)
RottenThomas
on Jan 30, 2025
Apr 30, 2026
01:32 PM
by
RottenThomas
53
4,318
advantages/disadvantages of tpi to carb
cort351w
on Nov 24, 2001
Apr 27, 2026
07:35 AM
by
CamaroZ_85
25
3,284
TPI fuel lines
SteveC68
on Feb 28, 2026
Apr 23, 2026
07:15 PM
by
Mikos_89
10
710
No Injector Pulse?
19875speed
on Apr 18, 2026
Apr 21, 2026
04:46 PM
by
19875speed
7
347
Time has caught up with 87 GTA
Hoonbash
on Apr 20, 2026
Apr 21, 2026
11:19 AM
by
Hoonbash
2
320
Trying To Get It Running Again
86blackiroc
on Apr 16, 2026
Apr 16, 2026
09:47 PM
by
Tuned Performance
10
492
Dead Fuel Pump
Aussie3rdGen
on Apr 8, 2026
Apr 12, 2026
01:25 PM
by
Vader
4
308
1988 iroc-z tpi high idle
Christurpin509
on Apr 6, 2026
Apr 7, 2026
03:17 PM
by
Tuned Performance
5
314
Is some knock retard normal?
wolf_walker
on Mar 28, 2026
Apr 1, 2026
09:38 AM
by
Tuned Performance
12
554
1990 camaro turns over, won't start
Ryanr05
on Jun 1, 2025
Mar 22, 2026
06:11 PM
by
Tom 400 CFI
26
1,277
E85 tpi whats needed
Sojer
on Aug 3, 2013
Mar 21, 2026
11:54 AM
by
Street Lethal
10
7,159
rough idle after cold start and tcc problems
49m
on Feb 10, 2006
Mar 8, 2026
04:53 PM
by
Tuned Performance
10
4,407
TPI remote Adjustable regulator
rednblackrs
on Jan 19, 2026
Feb 8, 2026
11:46 PM
by
rednblackrs
3
426
Custom Throttle Body Coolant Bypass
JDF-Z28
on Nov 19, 2009
Feb 7, 2026
12:25 PM
by
BHR
33
19,842
Poll
The best banging for the buck!
92droptopws6
on Feb 6, 2026
Feb 6, 2026
07:37 PM
by
Tom 400 CFI
4
346
Need help
Hojon
on Nov 27, 2025
Feb 3, 2026
02:57 PM
by
92droptopws6
12
691
Idle Surge Need Help Please!
DMayz
on Dec 20, 2025
Jan 26, 2026
11:47 AM
by
Tuned Performance
10
686
Need TPI Lower Intake Manifold
RonnieTPI
on Dec 29, 2025
Jan 25, 2026
02:42 PM
by
Ty92Z
9
630
Is Tony Knight on here
89GTAPhoenix
on Jan 15, 2026
Jan 16, 2026
09:14 AM
by
91zl98
1
407
Help needed
Merrick102
on Jan 11, 2026
Jan 13, 2026
08:49 PM
by
Vader
2
260
New way of TPI heater core Hose bypass?
z28onTweenkies
on Jan 10, 2007
Jan 11, 2026
03:26 PM
by
chevypower91
3
6,177
Pics of the now motor
Realmac4
on Jun 10, 2005
Jan 10, 2026
12:32 PM
by
Dwheelz88
5
1,785
What to do with my TPI injectors for long term storage?
dannyual320
on Jan 6, 2026
Jan 10, 2026
11:05 AM
by
dannyual320
18
519
Powdercoat inside injector holes ok?
Moms-GTA
on Nov 29, 2025
Jan 10, 2026
01:37 AM
by
Crazyeights
7
369
Adding horsepower while keeping stock parts...
deus402
on Feb 11, 2009
Jan 5, 2026
07:54 PM
by
deus402
28
4,057
Quick question on fuel pump
Chevelle505
on Dec 18, 2025
Jan 5, 2026
04:27 PM
by
mikeceli
11
572
TPI Aftermarket EGR Solenoid Installation
(
1
2
)
thtanner
on Jan 21, 2019
Dec 24, 2025
06:26 AM
by
Doctoriroc
73
25,810
Fitech Stand alone
sodak
on Dec 13, 2025
Dec 23, 2025
12:20 PM
by
ULTM8Z
38
1,336
Need help identifying adjustable fuel pressure regulator
DiabloWS6
on Dec 4, 2025
Dec 4, 2025
04:51 PM
by
Tuned Performance
1
213
Spark Plugs
Eightyninef
on Dec 1, 2025
Dec 4, 2025
01:58 PM
by
Eightyninef
2
341
Tuner guys, IAC question
wolf_walker
on Aug 16, 2025
Nov 15, 2025
10:33 PM
by
Tom 400 CFI
10
916
FiTech 38350 ECU
(
1
2
3
4
)
Jim P
on May 7, 2022
Nov 10, 2025
03:18 PM
by
z 28 jari
184
42,675
Corvette TPI base
Eightyninef
on Nov 9, 2025
Nov 9, 2025
06:38 PM
by
Tuned Performance
5
410
305 TPI will start but not run (need some hints)
(
1
2
3
)
tnorthardt
on Aug 14, 2025
Nov 9, 2025
06:19 AM
by
NCC-2569
102
3,704
Help Needed: Logging Wideband AFR via APU1 Analog Input Alongside ECM Data in TunerPr
veiloctane
on Nov 7, 2025
Nov 7, 2025
10:16 PM
by
veiloctane
0
219
Need help! Cruise Control not working!
Redbird91TA
on Nov 5, 2025
Nov 6, 2025
08:00 PM
by
Vader
1
337
Injectors not firing
dabomb6608
on Jan 8, 2012
Nov 4, 2025
06:04 PM
by
Tuned Performance
37
5,909
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