tuned - Third Generation F-Body Message Boards

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1985, 1989, 50, 89, 97, camaro, cheverolet, diagram, iroc, line, lines, port, rs, trans, tuned, vacuum, z28

Vacuum Lines Diagrams!!! I GOT THEM ALL!!!!!

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Chevy86 IROC-Z on Oct 25, 2011

Mar 4, 2026 08:21 PM
by Dadio70

348

486,577

Tech / General Engine

This forum is lucky to have tunedperformance

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Midnight85 on Jun 6, 2013

Jan 20, 2026 07:38 PM
by southbay

168

37,000

DFI and ECM

1990, 1992, body, bridge, bypass, camaro, core, corvette, diagram, heater, hose, port, throttle, tpi, tuned, valve

New way of TPI heater core Hose bypass?

z28onTweenkies on Jan 10, 2007

Jan 11, 2026 03:26 PM
by chevypower91

3

6,089

TPI

79, 91corvette, blazer, d15, fired, firing, good, injector, injectors, motor, ohm, port, spraying, tpi, tuned

Injectors not firing

dabomb6608 on Jan 8, 2012

Nov 4, 2025 06:04 PM
by Tuned Performance

37

5,751

TPI

1985, convert, gold, inj, port, trans, transam, tuned, white, whitegold

1985 Trans Am Convert

extreme3rdgens on Oct 16, 2002

Oct 8, 2025 08:36 AM
by FireBirdblooded

11

2,197

History / Originality

1986, 1992, cam, camaro, chevy, comp, housing, injection, l98, polish, port, thermostat, tpi, tuned, xe26214

TPI thermostat housings

mult68 on Nov 26, 2001

Nov 3, 2024 10:07 AM
by Jbuttke1179

10

4,554

TPI

10269091, 3rd, baffle, baffled, camaro, gen, injection, number, part, port, tuned

Part number for baffled TPI gas tank

98_1LE on Sep 9, 2001

Feb 22, 2024 10:07 PM
by WildCard600

6

1,446

Tech / General Engine

1992, black, camaro, dyno, gm, injection, intake, john, lingenfelter, manifold, port, prototype, protype, results, runners, tpi, tune, tuned

is this actually a lingenfelter prototype tpi manifold and runners?

project89 on Jan 1, 2012

Nov 16, 2023 08:48 AM
by Tom 400 CFI

29

8,778

TPI

black, body, corvette, inside, intake, irocs, paint, painted, plate, plates, port, throttle, throttlebody, tpi, tuned

TPI throttle body plate painting

Nate_iroc88 on Apr 15, 2012

Sep 21, 2023 11:20 AM
by 91banditt2

13

7,343

Auto Detailing and Appearance

355, 57, car, craft, engine, gm, ho, injection, out, port, posi, shoot, tpi, tuned, tuning, zz3

Important/Useful :

Attention ALL TPI owners...inside please...

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KYL98 on Sep 25, 2003

Sep 19, 2023 05:03 PM
by mikeceli

255

135,128

TPI

1988, 50, 8292, 85, alt, camaro, carlo, dash, diagram, gm, injection, monte, port, tuned, wiring

Possible Useful Link for ThirdGen Wiring -

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Vader on Aug 13, 2005

Apr 3, 2023 10:41 AM
by wm_sorg

84

61,266

Electronics

50, 57, 57tpi, 88, gm, identification, identifying, injection, location, map, port, sensor, tpi, tuned, vs

5.7 TPI identification

haps on Jan 26, 2011

Mar 17, 2023 01:45 PM
by 73nova

8

11,108

TPI

1985, 28, 57, 85, camaro, campusing, chevy, emblem, injection, iroc, pics, port, sale, tpi, tuned, z28

Placement of TPI emblem on rear bumper

topgun89 on Apr 1, 2012

Feb 19, 2023 06:07 PM
by scottmoyer

13

9,054

History / Originality

emblem, injection, installation, port, tpi, tuned

TPI Emblem Position Help

coneheadjimmy on Aug 31, 2010

Feb 16, 2023 09:11 AM
by ms87iroc

4

1,885

Body

24x, 9902, brackets, custom, efi, fans, fit, harness, ls1, port, retrofit, sbc, silverado, swap, thirdgen, tuned, turbo

My 24X LS1 ECM conversion on twin turbo sbc

Orr89RocZ on May 12, 2013

Dec 28, 2022 09:50 PM
by bk2life

37

20,492

DFI and ECM

305, 87, camaro, camero, injection, manifold, motor, port, spec, specs, starter, torque, tpi, transmission, tuned

87 camaro 305 TPI torque specs

Iroc_man on Jul 5, 2006

Nov 25, 2022 05:12 AM
by OrangeBird

5

3,836

Tech / General Engine

69, car, cheap, chevelle, chevelles, kit, model, nascar, ontario, pepsi, port, speed, stock, tricked, tuned

My other car, the Nascar 69 Chevelle

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Dscott on Jul 11, 2010

Nov 10, 2022 12:44 PM
by Spruse220

135

64,233

Third Gen Association of Ontario

bolt, conversion, convert, converting, craigslist, differences, harness, headers, injeection, l69, port, sd, tbi, tpi, tuned

TBI TO TPI CONVERSION

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tonys91rs on Nov 16, 2011

May 1, 2022 12:53 PM
by jpetritsch25

60

80,521

TPI

1980, 305, 85, 92, camaro, ccm, computer, corvette, difference, iroc, port, tpi, tuned, units, vx

What are corvette vs. camaro TPI differences?

speedmachine on Jun 28, 2006

Mar 29, 2022 09:49 PM
by tom3

16

20,738

TPI

2000, 80s, car, decals, door, handle, incerts, injection, inserts, insertsdoorhandle, port, recaro, tas, trans, tuned

Recaro T/A doorhandle inserts.

recaroguy on Mar 12, 2007

Dec 8, 2021 12:34 PM
by perjmolsen

34

2,168

History / Originality

1988, 57, 88, camaro, chevy, ecm, iroc, motor, port, putting, swap, tbi, tpi, truck, tuned

'88 IROC 5.7 TPI swap into a TBI '88-'97 Chevy truck HELP

skuanto on Oct 10, 2010

Jun 24, 2021 06:57 PM
by Tinbender59

20

31,673

TPI

305, 305700r4, 350, 86, 87, economy, firebird, fuel, gas, iroc, mileage, milegage, port, tpi, tuned

What kind of fuel economy is everyone getting on their TPI?

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Artisan on Jan 14, 2011

Jun 7, 2021 09:55 PM
by Fast355

71

27,506

TPI

305, chevy, engine, ford, identification, injection, locasion, locate, location, number, numbers, port, studebaker, tuned, vin

Engine number location on 305ci

Koolstude on Oct 31, 2005

Feb 26, 2021 05:24 AM
by Old Gearhead

9

26,401

TPI

1985, chevy, engine, fast, fbody, injection, port, sbc, tpi, tuned, turbo, turbos, twin, vector, w8

Vector's twin turbo TPI engine

fisherbody86 on Sep 14, 2004

Oct 20, 2020 01:36 PM
by Twin_Turbo

22

5,858

TPI

1992, 57l, 91, air, camaro, check, chevy, continuity, control, delphi, idle, idles, port, rough, tps, tuned

rough idle, tried everything..need help!

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camaropower88 on May 24, 2011

Jul 25, 2020 01:48 PM
by Reddragon88gta

72

35,306

TPI

1988, 57, 87, back, camaro, canister, cansiter, coil, emissions, engine, heating, jpg, picture, port, puruge, selenoid, tpi, tuned, vapor

Vapor canister solenoid gets really hot

80schild on Jun 28, 2012

May 10, 2020 01:15 AM
by Bob Evans

11

10,295

TPI

backwards, building, built, car, find, fuel, injection, originally, port, reads, system, systems, tpi, tps, tuned

The official First fuel injection tpi system build (100 percent installed and video )

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88fastgta on May 21, 2011

Mar 19, 2020 07:48 AM
by firstperf1

394

154,285

TPI

92, accel, bolt, bolts, fbody, heads, intake, manifold, pattern, port, scoggindickey, sett, tpi, tuned, vortec, z28

Are all TPI setups the same?

Nyczbubba on May 3, 2013

Mar 13, 2020 07:46 AM
by KyleF

35

10,809

TPI

1987, 1992, 57, 92, box, caprice, carb, conversion, ecm, l98, port, swap, tbi, tpi, tuned

TPI Caprice?

Paragus77 on Feb 3, 2009

Dec 29, 2019 09:44 AM
by Tuned Performance

25

5,077

TPI

1103, 1985, 305, 86, cam, camshaft, gen, horsepower, port, specs, sumg5000, summit, tpi, tune, tuned

Summit TPI Cam specs

IROCZ28KevinZ on Sep 1, 2004

Aug 14, 2019 04:54 AM
by kenbob

23

4,829

TPI

462624, 54, 86, aluminum, cc, heads, port, set, switch, to, tpi, tuned, tuning, vette

'86 Vette Heads off 86 TPI Vette

johndo1707 on Jan 23, 2002

Jul 21, 2019 10:12 PM
by Jbuchanan

9

1,630

TPI

1990, 89, 950, camaro, commander, corvette, ecu, fuel, holley, install, maps, motor, pontiac, tuned, tuning

Commander 950 Timing/Tuning questions

quadgoat on Oct 26, 2004

Jun 3, 2019 10:16 PM
by quadgoat

6

2,243

DFI and ECM

305, 350, build, camaro, conversion, engine, gen, injection, lb9, mods, port, swap, thitd, tpi, tuned, wiki

305 TPI swap to A 350TPI

87DarkKnite on Aug 6, 2009

May 8, 2019 07:21 PM
by GeneralDisorder

12

2,350

TPI

1988, 700r4, camaro, conections, egr, hoses, injection, iroc, line, lines, picture, port, tpi, tuned, vaccuum, vacuum

TPI OWNERS, I need a little help please. Hoses and lines issues.

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Chevy86 IROC-Z on Jul 6, 2009

Mar 14, 2019 07:23 PM
by Tuned Performance

71

82,233

TPI

addicted, bolt, ls1, ons, port, torque, tpi, tuned

Addicted to TPI Torque

91zzzeder on Aug 14, 2005

Jan 7, 2019 08:26 PM
by SirReveller

25

3,100

TPI

31, 89, 90, auto, buffing, camaro, car, cleaning, compound, engine, machine, motors, naturally, port, s10, tuned

Best Auto Waxes, Polishes, Protectants and tips and tricks!

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FireInMe17 on Jan 21, 2010

Oct 5, 2018 09:13 PM
by 88IROCvertZ

59

5,052

Auto Detailing and Appearance

355, 369, 409, asm, c10, camshaft, car, dyno, engine, fast, fastest, injection, port, project, runners, sbc, tpi, tuned

So, who has the quickest TPI car these days?

Johnny Blaze on Oct 25, 2012

Sep 28, 2018 12:00 PM
by NufNuffZ28

20

2,885

TPI

350, base, injection, intake, manifold, manifolds, port, runners, slp, tpi, tuned, vortec

89' TPI PARTS! Throttle Body, Fuel rails & EGR

Keoman on Nov 8, 2013

Aug 8, 2018 06:04 PM
by JEFF'S GTA

21

4,270

Engine/Drivetrain/Suspension Parts for Sale

34l, 50, 88, absolute, circuit, drivers, firebird, injection, located, manifold, open, performance, port, pressure, s10, sensor, side, tpi, tuned, v6

New to TPI!

1989karr on Feb 4, 2010

Jul 20, 2018 02:10 PM
by 1989karr

25

2,291

TPI

88, 89, body, camaro, housing, iac, location, lt1, plug, port, swap, throttle, tpi, tuned, work

TPI - LT1 IAC Mod

88gta3508 on Feb 11, 2010

Apr 6, 2018 12:55 PM
by Tuned Performance

10

5,476

Engine/Drivetrain/Suspension Parts for Sale

14078907, 87, camaro, car, fuel, injection, iroc, location, part, port, pump, relay, tpi, tuned, work

Fuel pump relay

Chevy86 IROC-Z on Oct 26, 2009

Dec 12, 2017 03:58 PM
by RRustenholtz

16

28,444

TPI

350, block, chevy, density, engine, engines, injection, motor, port, remanufactured, sale, speed, timing, tpi, tuned

[KY]

350 TPI Engine for sale (Speed Density) Must See to appreciate! Price drop!

kyrenegade on Jun 18, 2012

Aug 23, 2017 11:03 PM
by Ed1LE

10

23,575

Engine/Drivetrain/Suspension Parts for Sale

1988, 85, camaro, flo, gen, high, injection, motor, motors, pics, pictures, port, rebuilt, tpi, tuned

tpi motor pics

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dusty's89 on Jul 30, 2011

Jul 29, 2017 09:27 AM
by Abubaca

90

46,458

TPI

305, 350, 50, custom, engine, fins, injection, intake, motor, paint, painted, pics, plate, port, tpi, tuned

Who has painted their TPI intake ?

gta_knight on Apr 15, 2013

Jun 20, 2017 01:43 PM
by 91banditt2

46

25,911

TPI

1990, camaro, cold, fuel, hot, injection, iroc, motor, port, problems, start, starts, tpi, tuned, warming, wont, z28

TPI acting up multipe problems

bcormier on Aug 18, 2009

May 21, 2017 02:55 PM
by Scottypolock

32

10,926

TPI

1991, 305, 91, camaro, computer, fbody, firebird, gm, intakes, manifolds, port, swap, tbi, tpi, tuned

TBI to TPI swap: 91' 305

camarocruzer on Jan 23, 2010

Feb 8, 2017 02:15 PM
by DynoDave43

9

9,082

TBI

1985, 1989, 89, camaro, firebird, injection, iroc, location, oil, port, pressure, readings, replacement, sensors, switch, tpi, tuned

WHERE IS MY OIL PRESSURE SENSOR 1989 tpi

revereamg on Feb 17, 2011

Dec 28, 2016 10:04 AM
by Captainfernny

14

19,133

TPI

1985, 305, 86, camaro, engine, injection, location, oil, port, pressure, relay, switch, tpi, tuned, unit

oil pressure switch location 305 tpi

thetaman85 on Dec 26, 2009

Dec 13, 2016 02:00 AM
by JRobling

6

43,901

TPI

1985, 305, aluminum, custom, dohc, dual, engine, ford, intake, metal, mustang, plenums, port, race, sheet, tuned

TPI Cross Ram Construction Thread

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1989GTATransAm on Feb 29, 2012

Nov 18, 2016 08:39 PM
by 1989GTATransAm

268

67,663

TPI

1986, 1988, 1990, 57, 86, camaro, fuel, port, pressure, pump, rail, test, testing, tpi, tuned

fuel pressure test for TPI

88 5.7 Iroc-Z on Sep 16, 2010

Nov 15, 2016 02:10 AM
by JRobling

7

24,154

Tech / General Engine

Threads Tagged with tuned