Series I Aftermarket Performance Modifications

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Announcement: TAKATA Air Bag Extended Warranty (USA)

Jul 1, 2021 ASH8

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aftermarket, body, door, exhaust, fuel, gain, greddy, greedy, horsepower, kit, legal, mazda, perth, rx8, sp2, street, system

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RX-8 aftermarket exhausts SUMMARY

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bobclevenger on Dec 11, 2003

Aug 25, 2021 05:24 PM
by maxramey14

910

421,984

111, 3d, apex, bill, chart, club, cr, flame, front, ignition, lolachampcar, mazdamaniacs, obdscan, plot, rx8, timing, tuner, wanna

Sticky

So you wanna be a tuner?

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BigOLundh on Oct 4, 2006

Oct 11, 2017 09:33 PM
by jkinard

138

85,768

Sticky

Calling all Springs, Flywheels, Sway Bars, Intakes, Pulleys, and more!

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1 2 3 4)

speeddemon32 on May 26, 2006

Nov 10, 2013 06:11 PM
by dlum125

62,007

guide, list, modibg, mods, performance, rx, rx8

Sticky

Newbie's Guide to Modding the RX-8 (link)

RIWWP on Jul 4, 2012

Jul 4, 2012 11:19 AM
by RIWWP

44,664

ac, beat, belt, catalytic, change, compressor, converter, emissions, header, pump, racing, remove, removing, replacing, rx8, rx8club, water

Sticky

The New RX8 Owner FAQ -- 1-25-09

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1 2)

staticlag on Jan 4, 2009

Jan 25, 2009 11:22 PM
by staticlag

124,436

Normal Threads

*Racing Beat Header - worth it?

TopGunM2k on Mar 24, 2026

Mar 27, 2026 08:36 PM
by TopGunM2k

376

RX-8 Racing Beat REVi Intake | Install & TEST!

hufflepuff on Feb 26, 2026

Mar 5, 2026 04:53 AM
by Monstermills

549

cat, catpipe, cel, code, flow, high, inspection, midpipe, midpipecatpipe, review, rx8, rx8club, turbo, turboxs, xs

Turboxs midpipe w/cat

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1 2)

MDJ710 on Nov 5, 2012

Feb 5, 2026 11:26 PM
by TopGunM2k

18,914

agen, agency, autobhan, code, crankshaft, install, installing, intercooler, mazda, misfire, pulley, pulleys, reset, rx8, underdrive

Agency Power Underdrive Pulley - Review & Pics

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staticlag on May 19, 2006

Dec 7, 2025 09:37 AM
by Meat Head

228

69,164

E85 conversion of a non turbo engine

Kamal El on Apr 11, 2025

Nov 8, 2025 07:29 AM
by equinox92

3,038

Free Headers worth installing!?

TopGunM2k on Nov 1, 2025

Nov 3, 2025 01:03 PM
by TopGunM2k

547

200, buy, cat, catalytic, cats, cocktail, converter, cpi, davesport, flow, high, highflowmetalliccatrx7, probation, rx8, shaker

Which Hi-flow cat to buy (not a pipe with the cat, JUST the cat)

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Daemos on Jan 24, 2008

Sep 27, 2025 04:15 PM
by hufflepuff

127

32,094

2010, air, attatched, box, carbon, charger, inlet, intake, mazda, ram, review, rx8, rx8club, simota, stock

Intake Intakes Intakes

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speeddemon32 on May 18, 2006

Sep 20, 2025 04:10 PM
by HMSS013

348

119,940

Mazdaspeed dual canister muffler

SparklingFresca on Nov 17, 2024

Mar 6, 2025 02:59 PM
by TopGunM2k

1,803

Ebay headers??

Dani_Zetec on Jan 15, 2025

Jan 26, 2025 10:45 AM
by motodenta

1,841

famous, guy, makes, paul, richard, shifter, shifters, short, the, world

Name Richard's Shifter....

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1 2)

Gomez on Apr 24, 2005

Nov 15, 2024 06:08 AM
by 200.mph

4,115

Long term review CAE Ultra Shifter

motodenta on Mar 29, 2024

Aug 12, 2024 08:03 PM
by motodenta

6,508

apv, cat, efficiency, mid, midpipe, ouzo, performance, pipe, review, rotary, rp, rx8, super, supercat, threshold

Rotary Performance Super CAT Midpipe

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Nemesis8 on Feb 28, 2005

Jun 29, 2024 12:51 AM
by TopGunM2k

320

66,895

12a, 13b, ac, advance, engine, ignition, leading, mazda, renesis, rotary, rx7, split, tables, timing, trailing

leading and trailing ignition split

zoom44 on Sep 14, 2004

Apr 21, 2024 08:06 AM
by motodenta

14,301

Clutch Delay Valve (CDV) Removal

GQM on Dec 6, 2023

Feb 17, 2024 06:20 PM
by motodenta

2,332

Center siamese port UEL header thoughts

ZenVirZan on Dec 5, 2023

Dec 7, 2023 05:23 PM
by TeamRX8

1,379

Bump Stop modification for Shocks and lowering springs

TopGunM2k on Nov 15, 2023

Nov 16, 2023 01:14 PM
by TopGunM2k

3,428

Hello!

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1 2)

pls_pressY4pie on Aug 15, 2021

Oct 19, 2023 09:55 AM
by ciprianrx8

9,311

The butt dyno. Myth or reality?

kevink0000 on Oct 5, 2023

Oct 6, 2023 11:29 AM
by BigCajun

1,564

119, axialflow, brace, motegi, mr, racing, review, rx8, shifter, short

another AxialFlow shifter deal

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Richard Paul on Sep 27, 2008

Oct 4, 2023 09:01 AM
by Richard Paul

349

29,199

Premix with cat

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Fickert on Apr 21, 2014

Sep 13, 2023 11:47 PM
by TeamRX8

29,690

Midpipe help?

Gotian on Apr 1, 2023

Aug 23, 2023 09:35 PM
by Dimension23

1,729

Mazdaspeed Exhaust Differences

blkswan on Nov 16, 2018

Jul 27, 2023 01:42 PM
by MazdaTrio

5,896

Can E85 technically work?

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1 2 3)

Jesus Martinez on Aug 16, 2015

Jul 26, 2023 11:29 PM
by SilversNova

49,960

RX-7 height apex seal rev limit

ZenVirZan on May 25, 2023

Jul 26, 2023 11:18 PM
by SilversNova

4,097

Transmission Options for S1

ZenVirZan on Jun 16, 2023

Jun 20, 2023 05:09 AM
by ZenVirZan

3,223

BARGAIN PRICE? Is this Legit?

Slick1983 on Jun 6, 2023

Jun 17, 2023 08:44 AM
by spectre6000

1,816

Radiator broke, need upgrade suggestions

Gotian on Apr 12, 2023

May 16, 2023 11:22 PM
by TeamRX8

1,896

aftermarket corner seals

tr1ple on Jan 30, 2023

Feb 10, 2023 04:15 PM
by GoodfellaFD3S

2,946

Hood Louvers for a k&n typhoon intake

cmaderia10 on Nov 12, 2022

Dec 9, 2022 09:19 AM
by BigCajun

1,767

lower air actuators sleeves removed??

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1 2)

jorx7 on Apr 5, 2020

Nov 6, 2022 11:32 PM
by Loki

7,924

2004, club, coolant, davis, days, design, fans, radiator, radiatorrx8, ron, running, rx8, rx8club, slow, track, works

Best Radiator

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1 2)

Moderie/MT on Jun 16, 2009

Nov 3, 2022 09:35 AM
by TeamRX8

26,729

Best Header

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1 2 3)

Jarrell Williams on Jan 4, 2018

Oct 15, 2022 01:07 AM
by TeamRX8

75,868

What clutch should I get as a replacement?

ThomasThicc on Apr 24, 2020

Aug 16, 2022 07:25 PM
by pfknrx8

6,681

WHICH RADIATOR? or ( Here we go again!)

RA32425 on Jul 26, 2022

Jul 28, 2022 11:48 PM
by TeamRX8

5,793

aftermarket, aluminum, angeles, antonio, bhr, davis, fan, los, mazda, mishimoto, radiator, ron, rx8, rx8club, san, shroud

Calling All Aftermarket Aluminum Radiators

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9krpmrx8 on Nov 25, 2011

Jul 18, 2022 01:08 PM
by Tamas

163

91,067

Moved

The Shinka LFX

delturcious on Jul 14, 2022

125, car, compresion, compression, high, highest, increase, mazda, performance, production, ratio, rotary, rotor, rotors, rx8

Higher Compression Rotors

Erv187 on Jun 24, 2005

Jun 5, 2022 05:41 PM
by TeamRX8

18,953

Hellcat Fuel Pump?

Fickert on Jun 3, 2022

Jun 4, 2022 10:56 AM
by TeamRX8

1,403

2004, cel, delay, mazda, mazdaspeed, midpipe, o2, p0139, response, running, rx8, sensor, spacer, spacers, weird, work

o2 spacers

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1 2)

Carbon8 on Jul 12, 2012

May 3, 2022 08:37 PM
by Socorro617

15,764

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