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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
138,348
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
139,674
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
134,157
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
135,328
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
76,452
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
128,646
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
2
3
4
5
...
Last Page
)
S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
325,410
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
47,095
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
83,800
Normal Threads
Adjust TPS For Better Throttle Response
Vinscully50
on Jun 2, 2020
Jul 2, 2020
11:24 PM
by
Tom 400 CFI
22
4,911
Looking for a tuner Central Florida
gpetry
on Jun 22, 2020
Jul 1, 2020
06:10 PM
by
gpetry
2
323
Boost my engine
Mike69
on May 29, 2020
Jul 1, 2020
02:50 PM
by
Mike69
11
653
88 IROC stalling when put in drive
Jonkoboti
on Jun 21, 2020
Jun 30, 2020
03:33 PM
by
RBob
5
483
Rough idle
Daniel Sitzes
on Jun 29, 2020
Jun 30, 2020
12:18 PM
by
GeneralDisorder
1
681
Engine Idle Sounds. High Idle in Park and Neutral
Vinscully50
on Jun 25, 2020
Jun 28, 2020
10:03 PM
by
MontanaIrocGuy
3
736
90 L98 stock heads- how much lift can they take?
zman1969
on Jun 17, 2020
Jun 26, 2020
01:14 AM
by
89iroc_lb9
7
896
Injectors not firing
KCG
on Sep 13, 2015
Jun 24, 2020
04:33 AM
by
FaithTerry
7
28,589
Stock TPI manifold, Naturally aspirated Record?
Genesis98
on May 4, 2020
Jun 23, 2020
10:04 AM
by
Gen1
12
2,017
4th Gen Fuel Tank Question
thainglo
on Jun 19, 2020
Jun 22, 2020
04:56 PM
by
iansane
6
714
Building horsepower on an 87 5.7L?
indianafirebird
on Jun 20, 2020
Jun 21, 2020
10:02 AM
by
BadSS
2
783
Intake manifold cracked ......
Bavooz Flo
on May 26, 2020
Jun 20, 2020
05:33 PM
by
Tuned Performance
6
734
Help!!!!!!! I can’t find this part anywhere. Cold start valve.
Summer Mae
on Jun 12, 2020
Jun 19, 2020
11:54 AM
by
GeneralDisorder
5
1,309
Best (cheap hehe) cam for boosted 350 TPI?
Jetlogan
on Jun 10, 2020
Jun 15, 2020
01:25 PM
by
KyleF
12
706
TPI fuel pressure on rail
tsaarts
on Mar 12, 2020
Jun 14, 2020
10:43 AM
by
tsaarts
9
2,916
Best Spark Plugs and Wires For Headers?
Vinscully50
on Jun 2, 2020
Jun 13, 2020
09:52 PM
by
IROCZ1989
9
5,087
383 stroker sound clip
my hemi
on May 8, 2020
Jun 10, 2020
04:58 PM
by
my hemi
36
966
Looking to help someone with their project
Jbuchanan
on May 2, 2020
Jun 9, 2020
09:37 PM
by
dmccain
13
1,151
Stock air snorkel question
my hemi
on Jun 5, 2020
Jun 9, 2020
11:55 AM
by
my hemi
2
519
Anyone Run Fully Synthetic High Mileage Oil?
Vinscully50
on May 16, 2020
Jun 6, 2020
03:50 PM
by
Tom 400 CFI
21
1,277
Help!! Zero fuel pressure at fuel rail 5.7 TPI even after new fuel pump.
amfornal
on May 25, 2016
Jun 3, 2020
02:30 AM
by
mnorton
7
6,375
AS&M say they still making and currently stock runners
1989iroc5.7
on May 20, 2020
Jun 2, 2020
09:25 AM
by
Thirdgen89GTA
24
3,743
Help please!!
Mcruze1
on Jun 1, 2020
Jun 2, 2020
04:09 AM
by
alan91z28
1
319
Engine cuts out and comes back while driving (Code 32 related?)
t/adreams
on Apr 14, 2020
May 28, 2020
07:41 PM
by
8Mike9
11
1,057
Has anyone ever encountered any 3rd gen car with a rear wiper?
242turbo
on May 25, 2020
May 28, 2020
08:05 AM
by
skinny z
20
2,722
SLP 51002 -matching springs and distributor gear-
Chris_Formula
on Apr 22, 2020
May 28, 2020
08:01 AM
by
TTOP350
6
1,280
hard cold start, high idle - came up suddenly
erik69&85
on Nov 5, 2019
May 27, 2020
09:44 PM
by
erik69&85
42
6,146
vibration, rough running at 1500-2k rpm L98
Johnny*G
on Jan 28, 2016
May 26, 2020
12:58 PM
by
Johnny*G
40
7,521
Fuel pump runs all time
babyelephant
on May 16, 2020
May 26, 2020
12:27 AM
by
babyelephant
8
834
Can you still buy aftermarket TPI base and runners??? (Not Edelbrock)
(
1
2
)
Oregon_B4C
on Sep 11, 2016
May 25, 2020
04:37 PM
by
atapia14
50
18,064
91 z28 no codes but no throttle response
87350gtanj
on May 24, 2020
May 25, 2020
07:07 AM
by
ironwill
2
546
1992 z28 305 charcoal canister has oil on/around it
ozzie280
on May 24, 2020
May 24, 2020
10:17 PM
by
ozzie280
0
310
383 upgrade
atapia14
on May 22, 2020
May 22, 2020
08:49 PM
by
atapia14
4
671
Code 22 91z28 350tpi
87350gtanj
on May 21, 2020
May 22, 2020
06:33 PM
by
Tuned Performance
3
277
Lowering the power curve of the TPI
(
1
2
3
)
racprops
on Apr 4, 2020
May 21, 2020
09:52 PM
by
Fast355
136
9,620
383 want to keep tpi (help)
Jimmy alphin
on Jan 5, 2018
May 17, 2020
06:24 PM
by
SbFormula
21
2,262
Engine won't start after tune-up
ace16a
on Jul 8, 2009
May 14, 2020
08:56 PM
by
Keno Beenz
21
25,944
Tricky Throttle Body Holding Open Only When Running Problem
Tootie Pang
on May 7, 2020
May 13, 2020
09:20 AM
by
Tootie Pang
10
825
Tpi mad sensor clamp
Az101
on May 12, 2020
May 12, 2020
07:19 PM
by
Tuned Performance
3
1,115
Granatelli MAF
88ripper
on Apr 25, 2020
May 12, 2020
11:17 AM
by
KyleF
13
1,350
TPS Adjustment. No Voltage
Vinscully50
on May 10, 2020
May 11, 2020
08:28 PM
by
NoEmissions84TA
7
1,282
Vapor canister solenoid gets really hot
80schild
on Jun 28, 2012
May 10, 2020
01:15 AM
by
Bob Evans
11
10,316
Quick egr solenoid question
ken3983
on Apr 5, 2016
May 9, 2020
08:39 PM
by
ma-harris
13
3,976
Little sound clip
my hemi
on May 8, 2020
May 8, 2020
11:11 AM
by
my hemi
0
263
Help identifying where parts go
optima23
on May 5, 2020
May 5, 2020
01:36 AM
by
Drew
1
474
Mid/top-end loss and no "go" when mashing throttle - no codes
(
1
2
3
)
super_kev
on Apr 17, 2020
May 4, 2020
07:43 PM
by
Tuned Performance
114
4,081
Increase the horsepower tpi
Patu
on Apr 18, 2020
May 4, 2020
05:20 PM
by
Tom 400 CFI
20
3,663
1991 Z28 305 TPI will not start
eric90rs
on Feb 4, 2020
May 4, 2020
02:53 PM
by
eric90rs
15
977
FIRST TPI build
ToolGuru
on Mar 10, 2020
May 3, 2020
11:05 PM
by
ToolGuru
16
1,850
horsepower from vortec combo
dv013003
on Mar 20, 2008
May 2, 2020
10:07 PM
by
cardo0
4
1,865
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