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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
138,391
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
139,700
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
134,201
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
135,346
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
76,454
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
128,666
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
325,475
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
47,100
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
83,805
Normal Threads
Random cut out
ken3983
on Jun 29, 2016
Jun 29, 2016
06:57 PM
by
ken3983
0
416
Surging idle - 350 TPI with 24lb injectors
BLITZ-88Z
on Jun 27, 2016
Jun 29, 2016
08:55 AM
by
Abubaca
3
1,279
MISFIRE AT IDLE
Isaac McCormick
on Jun 27, 2016
Jun 28, 2016
04:29 PM
by
bop11
1
738
Fresh upper end, terrible idle, error code 33
MarkE
on Jun 23, 2016
Jun 27, 2016
10:26 PM
by
red rock
17
1,488
305 TPI build
91rs1022
on Jun 27, 2016
Jun 27, 2016
03:11 PM
by
91rs1022
3
729
1992 350 TPI camshaft specs
Chrisz92
on Jun 27, 2016
Jun 27, 2016
07:50 AM
by
Chrisz92
2
810
TPI conversion help/update
Rkn1990
on Jun 24, 2016
Jun 27, 2016
06:45 AM
by
Rkn1990
2
643
1989 Iroc-Z TPI Cold Idle Question
1989IROCTPI
on Jun 24, 2016
Jun 25, 2016
06:55 PM
by
Matt trans am
5
821
Diagnostic Help
mbailey713
on Jun 22, 2016
Jun 24, 2016
04:27 PM
by
mbailey713
4
432
L98 1991 350 TPI starts with Startin Fluid
TinkerToyII
on Jun 19, 2016
Jun 24, 2016
07:58 AM
by
battman
15
890
engine misses/idles poorly
wruiz
on Jun 15, 2016
Jun 23, 2016
08:34 PM
by
Kingtal0n
5
719
L98 free mods
nelson84
on Jun 22, 2016
Jun 23, 2016
08:26 PM
by
chazman
3
1,763
TPI ignitions/fuel problems. HELP!
Third Gen Will
on May 2, 2016
Jun 21, 2016
06:13 AM
by
Third Gen Will
10
1,442
TPI Flooded Won't Start/Stay Running
Vinscully50
on Jun 19, 2016
Jun 21, 2016
01:32 AM
by
hilltop530
10
2,639
Auto xray 6000
brett89
on Jun 20, 2016
Jun 20, 2016
10:18 PM
by
paulo57509
2
463
TPI with Vortec Heads
89L98IROCZ
on Jun 15, 2016
Jun 20, 2016
06:50 PM
by
jharrison5
3
1,495
383 stroker
transamaster
on Apr 24, 2016
Jun 20, 2016
06:06 PM
by
johng1
20
1,953
307 TPI Jeep in Norway
Caspar
on Aug 12, 2015
Jun 19, 2016
11:19 PM
by
TinkerToyII
24
154,998
91 L98 starts with starts with starting fluid, runs ok afterwards.
LowBird87
on Jun 15, 2016
Jun 18, 2016
03:48 PM
by
LowBird87
1
588
carb to efi fuel pump questions
nuggie
on May 30, 2016
Jun 17, 2016
07:02 PM
by
nuggie
9
872
I don't have enough vacuum ports/ sources
ZZ42Fast
on Jun 16, 2016
Jun 16, 2016
02:51 PM
by
paulo57509
2
765
gas tank, bubbling after shutting off?
86Z
on Apr 15, 2006
Jun 16, 2016
03:58 AM
by
ZZ42Fast
24
43,462
Adjust fuel pressure when changing injectors?
perZ
on Jun 7, 2016
Jun 15, 2016
09:17 PM
by
Abubaca
17
8,056
New TPI engine build
gpetry
on Jun 14, 2016
Jun 15, 2016
09:08 PM
by
gpetry
2
795
Three Wire O2 Sensor for a Thirdgen?
(
1
2
)
BC GTA
on Jan 31, 2008
Jun 15, 2016
08:02 PM
by
Red_Dragon
65
37,334
LB9 cammed, dyno?
anesthes
on Jun 14, 2016
Jun 15, 2016
10:39 AM
by
old z mzn
21
1,686
Fuel pump relay.... hard cold start?
drathaar907
on Jun 10, 2016
Jun 14, 2016
06:51 PM
by
zero13
16
6,952
I need loads of Help!!!!!
Deadworm
on Jun 2, 2016
Jun 14, 2016
03:57 PM
by
battman
20
1,079
1989 305 TPI Wont Idle
Pilotrick50
on Mar 31, 2016
Jun 14, 2016
10:08 AM
by
Pilotrick50
15
5,920
350 TPI HP Bolts on parts available?
Out-Cast
on May 13, 2016
Jun 13, 2016
04:25 PM
by
racerx520
10
1,224
Will my second cam choice have too much duration to run well with TPI?
Priya
on Jun 10, 2016
Jun 12, 2016
02:26 PM
by
Priya
19
862
Fuel injector ohm testing
chevyhotrod
on Jun 11, 2016
Jun 11, 2016
08:03 PM
by
zero13
2
1,733
hard start
killer777
on Jun 10, 2016
Jun 10, 2016
12:59 PM
by
killer777
2
572
Need photos of how to modify base plate for early heads
david068513
on Apr 6, 2016
Jun 9, 2016
08:14 PM
by
AaronIROCZ
40
2,425
looking for TPI expert, time to pay someone to fix my car
wayshegoes
on Jun 8, 2016
Jun 8, 2016
01:49 PM
by
wayshegoes
5
799
L98 Cylinder heads
JD Z28
on Jun 7, 2016
Jun 8, 2016
12:42 PM
by
JD Z28
2
830
Help With this tpi guzzling gas, High blm
nikom1
on May 25, 2016
Jun 7, 2016
12:12 PM
by
nikom1
3
680
TPI fit question 1986 Z28
bassixx72@gmail
on Jun 7, 2016
Jun 7, 2016
10:26 AM
by
bigal55
2
622
400hp?
Brandonasbury
on Jun 6, 2016
Jun 6, 2016
10:04 PM
by
spurgeon76
1
574
Intermittent issue when at operation temperature
m16a2r
on Jun 4, 2016
Jun 5, 2016
11:47 PM
by
m16a2r
2
594
1984 Steel Z28 Hood and TPI
Saxondale
on Jun 5, 2016
Jun 5, 2016
08:43 PM
by
Saxondale
0
476
Code 34
wayshegoes
on May 31, 2016
Jun 5, 2016
09:15 AM
by
Vader
1
580
Help code 34 41 and 42 all on start up
TABBOO
on May 31, 2016
Jun 2, 2016
03:45 PM
by
TABBOO
4
1,611
Make my 383 TPI more powerful
DrvngCrooner
on May 27, 2016
May 31, 2016
09:59 PM
by
VincentZ28
19
1,282
MAF question 2016 To Replace or Not to Replace?
1701-Z
on Jan 14, 2016
May 31, 2016
09:32 PM
by
ledman66
11
2,660
THOUGHTS AND INFO PLEASE
HARDRIDER92
on May 30, 2016
May 31, 2016
01:16 PM
by
Street Lethal
3
688
data logging a 7165 ECM
rusty vango
on Feb 12, 2016
May 29, 2016
10:06 PM
by
rusty vango
10
3,993
Nothing but worse problems every day...
ramicio
on May 28, 2016
May 29, 2016
03:32 PM
by
ramicio
3
1,161
90 tuned port acceleration problems
Stones
on May 28, 2016
May 29, 2016
02:25 PM
by
paulo57509
2
542
Problem with 1227165 ECU and fan control
Zylinder
on May 29, 2016
May 29, 2016
02:05 PM
by
paulo57509
1
673
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