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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
138,532
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
139,840
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
134,385
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
135,419
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
76,478
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
128,798
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
325,943
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
47,131
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
83,827
Normal Threads
how much for a 89 iroc?
ScreaminDeamin85Z
on Oct 13, 2000
Oct 13, 2000
12:49 PM
by
Blade
2
469
Stock injector size on L98-89
gta324
on Oct 12, 2000
Oct 13, 2000
12:21 PM
by
Blade
3
4,216
3.42 or 3.73 for 305 TPI?
Cliff92Z
on Oct 9, 2000
Oct 13, 2000
11:58 AM
by
Cliff92Z
17
3,579
Cold start injector?Can I eliminate?
85ZZ4TPI
on Oct 9, 2000
Oct 13, 2000
11:25 AM
by
doc
9
12,042
WHere exactly does the air come from
theformula
on Oct 12, 2000
Oct 13, 2000
10:14 AM
by
MrJ
2
477
Accidently shifted from neutral to drive at 5500 RPM's
Brandog87GTA
on Oct 2, 2000
Oct 13, 2000
01:08 AM
by
dudelovett
2
559
305TPI to 350TPI swap
Abe91Z28
on Oct 8, 2000
Oct 12, 2000
11:02 PM
by
87Z-ya
14
529
REWARD PAID for anybody that can tell me what's wrong
BenDoe
on Oct 11, 2000
Oct 12, 2000
10:04 PM
by
Kevin G
6
476
EGR valve
theformula
on Oct 10, 2000
Oct 12, 2000
10:04 PM
by
gravitar
1
478
How to tell what engine a TPI was from?
GndPrx
on Oct 9, 2000
Oct 12, 2000
09:25 PM
by
GndPrx
14
613
Airfoil and other TPI questions
peez
on Oct 11, 2000
Oct 12, 2000
08:37 PM
by
peez
7
797
Out of curiosity,...MAF and a supercharger?
Rock90rs
on Oct 8, 2000
Oct 12, 2000
07:05 PM
by
Transformer
2
507
TPI manifold on L98 Alum. Heads...
Germ
on Oct 12, 2000
Oct 12, 2000
04:37 PM
by
Kevin91Z
2
493
TBI to TPI fuel pump and lines
CR89WS6
on Oct 11, 2000
Oct 12, 2000
10:48 AM
by
RCR
1
896
Confused. Can DFI be used w/ "normal" TPI system?
MILT
on Oct 11, 2000
Oct 12, 2000
10:38 AM
by
RCR
2
687
Another Idle Question - with Pictures!
petemed
on Oct 11, 2000
Oct 11, 2000
10:36 PM
by
iroczVinnie
1
446
Ign wire to Coil?
NickS
on Oct 11, 2000
Oct 11, 2000
05:34 PM
by
graebz28
1
584
91 Iroc w/6 speed
ScreaminDeamin85Z
on Oct 6, 2000
Oct 11, 2000
11:20 AM
by
Steve91Z28 L98
8
611
Vortec TPI base out yet?
Jim85IROC
on Oct 5, 2000
Oct 11, 2000
09:23 AM
by
fly89gta
3
564
Any Engine Shops in the Oklahoma City Area?!?!?!
IrocManiac
on Oct 9, 2000
Oct 10, 2000
10:34 PM
by
Bubba's 89 GTA
1
638
MAT Sensor vs. CTS...
John'89L98
on Oct 8, 2000
Oct 10, 2000
10:04 PM
by
Stell1579
8
954
Trick Flow or Baer claw
Randy92Z
on Oct 6, 2000
Oct 9, 2000
09:47 PM
by
90FFBird
12
628
Needed Wireing help?
James117
on Oct 8, 2000
Oct 9, 2000
07:23 PM
by
graebz28
1
470
TPI Intake ID
1988IROC350
on Oct 9, 2000
Oct 9, 2000
06:57 PM
by
super chevy
2
4,292
Knock sensor and limp home mode ?s w/in...
IROCZZ3
on Oct 8, 2000
Oct 9, 2000
01:07 PM
by
TRAXION
4
1,343
Help with high idle
Bruce89TA
on Oct 6, 2000
Oct 9, 2000
01:26 AM
by
Bruce89TA
2
559
What is the most accurate air/fuel meter to buy
superiroc
on Oct 8, 2000
Oct 9, 2000
12:44 AM
by
88IROCs
3
608
need number for edelb. heads
whiterocz
on Oct 7, 2000
Oct 8, 2000
11:48 PM
by
Jarod87IROC
2
458
Anyone going to bristal TN. for the gm high tech nationals?
superiroc
on Oct 8, 2000
Oct 8, 2000
11:05 PM
by
superiroc
2
500
1991 Corvette TPI
steve91rs
on Oct 8, 2000
Oct 8, 2000
08:53 PM
by
Steve91Z28 L98
1
495
Top Speed?
Jason_GTA
on Sep 25, 2000
Oct 7, 2000
11:56 PM
by
88 350 tpi formula
8
628
2 days of nos, engine blown!?!?
Brandog87GTA
on Oct 3, 2000
Oct 7, 2000
07:59 PM
by
KamaroZ350
8
582
air filter baffers
Z28DJP1987
on Oct 5, 2000
Oct 7, 2000
12:04 PM
by
WECoyote
8
1,015
What do i need
James117
on Oct 5, 2000
Oct 7, 2000
11:13 AM
by
five7kid
3
480
L98 ?'s
kwikgta
on Oct 3, 2000
Oct 6, 2000
04:21 PM
by
kwikgta
5
754
I need HELP putting a TPI on a 383!!!!!!
Metallica383
on Oct 4, 2000
Oct 6, 2000
01:35 PM
by
Kevin91Z
3
493
Will LT1 heads bolt up to a TPI intake and block???
IrocManiac
on Oct 6, 2000
Oct 6, 2000
01:21 PM
by
Kevin91Z
1
825
mass airflow vs speed density
avro206
on Oct 3, 2000
Oct 6, 2000
01:01 PM
by
91B4C jacob
22
3,996
Won't idle and sounds bad at high RPMs
Beast5spdGTA
on Oct 5, 2000
Oct 6, 2000
12:17 PM
by
Beast5spdGTA
2
480
Firehawk
90Iroc
on Oct 5, 2000
Oct 6, 2000
02:02 AM
by
90Iroc
5
490
SuperRam VS TPI
Godti
on Oct 5, 2000
Oct 6, 2000
01:25 AM
by
gta324
6
1,629
GMTech.................................
super chevy
on Oct 3, 2000
Oct 6, 2000
01:04 AM
by
8Mike9
7
2,016
I'm sick of my fuel rail leaking!!!!!
Jim85IROC
on Oct 5, 2000
Oct 5, 2000
10:44 PM
by
355 IROC-Z
2
782
350 Ram Air
Jason_GTA
on Oct 5, 2000
Oct 5, 2000
11:06 AM
by
speed88
1
469
cam choice-help? cause changing them sucks
blowen90ta
on Oct 2, 2000
Oct 4, 2000
07:06 PM
by
graebz28
2
437
TPI Retrofit & EGR
rwelch
on Oct 4, 2000
Oct 4, 2000
06:31 PM
by
GMTech
6
723
187 Head Castings
BenDoe
on Oct 1, 2000
Oct 4, 2000
01:56 PM
by
Mark_ZZ3
4
1,270
Fuel injectors
RP1987GTA
on Oct 4, 2000
Oct 4, 2000
01:39 PM
by
RP1987GTA
2
599
Fuel at start-up
freeze92
on Oct 4, 2000
Oct 4, 2000
11:01 AM
by
freeze92
1
406
intank fuel pumps
scotty d
on Sep 26, 2000
Oct 4, 2000
07:41 AM
by
Hank Brote
10
631
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