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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
138,442
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
139,742
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
134,261
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
135,375
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
76,460
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
128,689
Important/Useful :
TPI OBDII - Thoughts/Opinions
(
1
2
3
4
5
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Last Page
)
S10Wildside
on Aug 19, 2006
Oct 26, 2016
10:42 PM
by
evilstuie
1,099
325,595
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
47,119
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
83,811
Normal Threads
Want Service Bulletins for 89 Camaro
MartysIROC
on Jul 24, 2010
Jul 24, 2010
07:40 AM
by
MartysIROC
0
361
Anyone try bosch 4 injectors?
86White_T/A305
on Jul 23, 2010
Jul 23, 2010
04:57 PM
by
irocuroc
1
773
87 z28 cranks but cuts right back off
jsteadman
on Jul 19, 2010
Jul 23, 2010
03:46 PM
by
ASE doc
7
683
88 TPI Relays. Need some help please
quick90rs
on Jul 23, 2010
Jul 23, 2010
11:55 AM
by
John 89 Formula
1
752
Someone Please help me identify this plug on my 88 Harness.
quick90rs
on Jul 22, 2010
Jul 23, 2010
11:44 AM
by
John 89 Formula
4
594
engine surging at idle and cruising speed
tunedport77bird
on Jul 22, 2010
Jul 23, 2010
08:47 AM
by
ntomsheck
1
2,798
86 speedometer in 87 cameo?
jsteadman
on Jul 22, 2010
Jul 22, 2010
11:14 PM
by
1986iroc350
1
507
injector size question
86z89iroc
on Jul 22, 2010
Jul 22, 2010
08:02 PM
by
irocuroc
1
501
iroc 89 tries to fire on fluid but will not stay running
mooch56
on Jul 14, 2010
Jul 22, 2010
05:23 PM
by
ASE doc
24
1,366
First 350 Build Need Help
89 IRoc Z 28
on Jul 13, 2010
Jul 22, 2010
05:06 PM
by
ninetyone
5
664
350 tpi internal strength
kent624
on Jul 20, 2010
Jul 22, 2010
08:39 AM
by
vetteoz
3
816
How to set base timing on a 86 lb9
motorworld
on Jul 20, 2010
Jul 21, 2010
07:58 PM
by
motorworld
4
2,870
How to find out which TPI harness i have.
quick90rs
on Jul 21, 2010
Jul 21, 2010
02:46 PM
by
quick90rs
2
500
lt1 injector replacement
dan68rs
on Jul 19, 2010
Jul 21, 2010
02:40 PM
by
irocuroc
4
1,239
mass airflow voltage
emayetete
on Aug 30, 2005
Jul 21, 2010
01:22 PM
by
rednekwizard
16
7,766
crarks and cuts right back off
jsteadman
on Jul 21, 2010
Jul 21, 2010
12:55 PM
by
jsteadman
0
320
TPI vss wiring conn. ?
9manastacio
on Jul 20, 2010
Jul 21, 2010
02:51 AM
by
vetteoz
1
1,195
Tpi with cam, Timing?
IROCK ZZ
on Jul 21, 2010
Jul 21, 2010
01:59 AM
by
IROCK ZZ
0
504
2 series carrier with higher ratio
8airoc
on Jul 21, 2010
Jul 21, 2010
01:29 AM
by
8airoc
0
282
l98 zz4 cam advice
8airoc
on Jul 20, 2010
Jul 21, 2010
12:22 AM
by
8airoc
4
934
TPI QUESTION
bigal04
on Jul 16, 2010
Jul 21, 2010
12:01 AM
by
Chevy86 IROC-Z
19
1,255
stalling problem with 89 350 tpi camaro
irocman79
on Jul 19, 2010
Jul 20, 2010
11:02 PM
by
southbay08
6
2,287
Replacing the coolent temp sender. Questions.
blackbeauty89
on Jul 20, 2010
Jul 20, 2010
10:29 PM
by
tom3
4
537
No Codes, Timing Advances, Ridiculously Rough Idle
p8dnful
on May 20, 2010
Jul 20, 2010
05:04 PM
by
305ho
12
2,580
TPI Cold Air Intake
TG Goose
on Jul 17, 2010
Jul 20, 2010
01:25 PM
by
TG Goose
6
4,607
problem check engine
jll87TA
on Jul 19, 2010
Jul 20, 2010
11:40 AM
by
88gta3508
5
580
engine dies when put in gear
jamesw343
on Jul 19, 2010
Jul 19, 2010
10:22 PM
by
25th92RS
1
2,517
What Should I Do?
5.7TPICHUY
on Jul 16, 2010
Jul 19, 2010
09:28 PM
by
Chevy86 IROC-Z
21
1,011
what injectors do i have?
bjm1206
on Jul 19, 2010
Jul 19, 2010
08:50 PM
by
bjm1206
2
473
Injector Size
25th92RS
on Jul 19, 2010
Jul 19, 2010
07:35 PM
by
25th92RS
0
347
Clarification to removing the air runners
92chevyz28
on Jul 19, 2010
Jul 19, 2010
05:32 PM
by
92chevyz28
0
305
Good 90-92 TPI Harness to use?
Kevman
on Apr 17, 2010
Jul 19, 2010
09:38 AM
by
John 89 Formula
11
841
305 TPI, at the end of my rope!
86blackiroc
on May 24, 2010
Jul 18, 2010
08:49 PM
by
86blackiroc
8
1,147
TPI Injector Connector Issue
jtsk
on Jul 18, 2010
Jul 18, 2010
08:12 PM
by
vetteoz
1
850
fuel lines question
c5racing
on Jul 17, 2010
Jul 17, 2010
11:38 PM
by
Zepher
1
489
need cam help again lol
Lethalz
on Jul 14, 2010
Jul 17, 2010
11:23 PM
by
GTA Sammy
5
811
ok gurus, code 44
turbinator3
on Jun 23, 2010
Jul 17, 2010
08:33 PM
by
turbinator3
13
772
Polishing
dongc1
on Jul 14, 2010
Jul 17, 2010
06:53 PM
by
Theking
2
899
SouthBay or FIC injectors???
Pairof91rss
on Jul 16, 2010
Jul 17, 2010
03:35 PM
by
Theking
6
3,905
idle up
cliff1970
on Jul 16, 2010
Jul 17, 2010
06:17 AM
by
Theking
4
778
Ram Air box air filter?
86irocL98
on Jul 15, 2010
Jul 16, 2010
11:15 PM
by
Chevy86 IROC-Z
4
1,970
TPI fuel question and possible problem
dek1285
on Jul 15, 2010
Jul 16, 2010
02:57 AM
by
vetteoz
3
673
Fuel Pressure drops on shutdown
EDGE
on Jun 21, 2010
Jul 15, 2010
08:53 PM
by
sparky1989
3
835
89/5.7 TPI No cold start..Help!!
MartysIROC
on Jul 3, 2010
Jul 15, 2010
08:23 PM
by
MartysIROC
5
964
TPI air cleaner question
joebf85
on Jul 15, 2010
Jul 15, 2010
12:01 PM
by
JamesC
1
651
aftermarket regulator questions
matt1970pon
on Jul 14, 2010
Jul 14, 2010
02:14 PM
by
matt1970pon
2
456
So what do you guys think of these times? (Bolt on 305 TPI)
thegooseman
on Jun 19, 2010
Jul 14, 2010
10:19 AM
by
RED86Z28
19
1,283
ZZ4 cam in an LB9, who's done it?
88gta_hiflyer
on Jul 12, 2010
Jul 14, 2010
08:13 AM
by
Burnout91
11
2,537
LT4 HOT CAM
5.7TPICHUY
on Jul 14, 2010
Jul 14, 2010
03:04 AM
by
vetteoz
1
912
Bosh lll fuel injectors/Install & Info
southbay08
on Jul 13, 2010
Jul 14, 2010
12:25 AM
by
Zepher
3
4,965
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