Engines
efi2000 has a vehicle library of common engines and parts you can select from. Picking a part fills your project with verified data, so you can configure it quickly, and that data is used to improve your tune.
Engine data sets displacement, rev range and rated power and torque peaks. efi2000 uses it to shape the VE table, calculate required fuel and size the fueling across the RPM and load range.
34 engines
| OEM | Engine code | Application | Cylinders | Bore (mm) | Stroke (mm) | Max RPM | Power (hp) | Power RPM | Torque (lb-ft) | Torque RPM | Compression | Chamber | Induction | MAP (kPa) | Updated |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mazda | B6ZE(RS) | MX-5 Miata NA 1.6 | 4 | 78.00 | 83.60 | 7,200 | 116 | 6,500 | 100 | 5,500 | 9.40 | multivalve | none | 101.30 | Sep 23, 2026 |
| Mazda | BP-ZE - NB Japan 1998-2000 | Roadster NB 1.8 Japan 1998-2000; 145 PS converted to mechanical hp. Sources: https://www.mazda.com/ja/about/history/1990-1999/ ; https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 83.00 | 85.00 | — | 143 | 6,500 | — | — | — | multivalve | none | — | Oct 25, 2026 |
| BMW | M20B25 - catalyst | E30 325i / E34 525i; catalytic-converter variant | Sources: https://workshop-manuals.com/bmw/3_series_e30/325i_m20_tour/3_technical_data/11__engine_(m20)/0__engine_general/2_td__engine_in_general_m20_b_25/ | 6 | 84.00 | 75.00 | — | — | — | — | — | 8.80 | older-two-valve | none | — | Oct 25, 2026 |
| Nissan | RB25DET NEO | Skyline R34 25GT Turbo / Stagea | Sources: https://www.tomei-p.co.jp/manuals_data/pdf/piston.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 71.70 | — | — | — | — | — | 9.00 | multivalve | turbo | — | Oct 25, 2026 |
| Mitsubishi | 4G63 - DOHC turbo | DSM Eclipse / Galant VR-4 / Lancer Evolution; donor compression varies | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 85.00 | 88.00 | — | — | — | — | — | — | multivalve | turbo | — | Oct 25, 2026 |
| Mazda | BP-ZE - NA 1994-1995 | MX-5 Miata NA 1.8 1994-1995 | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 83.00 | 85.00 | — | — | — | — | — | 9.00 | multivalve | none | — | Oct 25, 2026 |
| Mazda | B6ZE(RS) - NA 90 PS | MX-5 NA 1.6 Europe 1995-1998; low-output variant | Sources: https://manuals.sucatisse.com/mx5-na/td/td-2 ; https://de.mazda-press.com/api/assets/download/487e1b3b-f4bb-4ac3-a2de-dd9035b66b22_Default?isDownload=false | 4 | 78.00 | 83.60 | — | 89 | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| Toyota | 2JZ-GTE - UK non-VVT-i | Supra A80 UK 1993-1996. Source: https://media.toyota.co.uk/wp-content/uploads/sites/5/pdf/Supra-Gen4-UK-launch-pack-1993.pdf | 6 | 86.00 | 86.00 | — | 326 | 5,600 | 325 | 4,800 | 8.50 | multivalve | turbo | — | Oct 25, 2026 |
| Mazda | BP-4W - NB 1998-2000 Europe | MX-5 NB 1.8 non-VVT Europe 1998-2000 | Sources: https://atelier-nii.com/cars/rs_catalog/uk/2000uk_Mx5_specs.pdf | 4 | 83.00 | 85.00 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| BMW | M50B25 | E34 525i / E36 325i, non-VANOS 1990-1992 | Sources: https://www.ms-motorservice.com/MediaAssets/spare-parts-for-modern-classic-and-classic-cars_1728820.pdf ; https://support.haltech.com/portal/en/kb/articles/m50-engine | 6 | 84.00 | 75.00 | — | — | — | — | — | 10.00 | multivalve | none | — | Oct 25, 2026 |
| Nissan | RB20DET | Skyline R32 GTS-t / Cefiro A31 | Sources: https://file.euroauto.ru/file/catalogs/firms/4247.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 78.00 | 69.70 | — | — | — | — | — | 8.50 | multivalve | turbo | — | Oct 25, 2026 |
| Mazda | BP-4W - NB 1999-2000 US | MX-5 Miata NB 1.8 non-VVT, US model years 1999-2000; stock BP geometry. Source: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 83.00 | 85.00 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| Nissan | KA24DE | 240SX S13/S14; stock geometry, verify donor compression | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 89.00 | 96.00 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| BMW | M42B18 | E30/E36 318is 1.8 16V | Sources: https://workshop-manuals.com/bmw/3_series_e36/318is_m42_sal/3_technical_data/11__engine_(m42)/0__engine_general/1_td__engine_in_general_m42_b18/ | 4 | 84.00 | 81.00 | 6,500 | 134 | 6,000 | 127 | 4,600 | 10.00 | multivalve | none | — | Oct 25, 2026 |
| Mazda | BP-ZE - NA 1996-1997 | MX-5 Miata NA 1.8 1996-1997 | Sources: https://bofiracing.com/wp-content/uploads/2020/04/MX5-Miata1996_engine_workshop-manual-including-tolerances-1.8.pdf | 4 | 83.00 | 85.00 | — | — | — | — | — | 9.00 | multivalve | none | — | Oct 25, 2026 |
| Toyota | 4A-GE - 16V | Corolla AE86 / MR2 AW11; 16-valve stock geometry, donor compression varies | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 81.00 | 77.00 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| BMW | M50B20 | E34 520i / E36 320i, non-VANOS 1990-1992 | Sources: https://www.ms-motorservice.com/MediaAssets/spare-parts-for-modern-classic-and-classic-cars_1728820.pdf ; https://support.haltech.com/portal/en/kb/articles/m50-engine | 6 | 80.00 | 66.00 | — | — | — | — | — | 10.50 | multivalve | none | — | Oct 25, 2026 |
| Mazda | B6ZE - NB 1.6 | MX-5 NB/NBFL 1.6 Europe 1998-2005 | Sources: https://atelier-nii.com/cars/rs_catalog/uk/2000uk_Mx5_specs.pdf | 4 | 78.00 | 83.60 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| BMW | M30B35 - E34 | E34 535i / E32 735i late Motronic; market-dependent ratings | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 6 | 92.00 | 86.00 | — | — | — | — | — | — | older-two-valve | none | — | Oct 25, 2026 |
| Mazda | B6-ZE - NB Japan | Roadster NB 1.6 Japan 1998-2005; 125 PS converted to mechanical hp. Sources: https://www.mazda.com/ja/about/history/1990-1999/ ; https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 78.00 | 83.60 | — | 123 | 6,500 | — | — | — | multivalve | none | — | Oct 25, 2026 |
| Nissan | RB20DE | Skyline R32 GTS | Sources: https://file.euroauto.ru/file/catalogs/firms/4247.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 78.00 | 69.70 | — | — | — | — | — | 10.00 | multivalve | none | — | Oct 25, 2026 |
| Nissan | RB30E | Skyline R31 / Holden VL | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 85.00 | — | — | — | — | — | 9.00 | older-two-valve | none | — | Oct 25, 2026 |
| Nissan | RB25DE | Skyline R33 GTS25 | Sources: https://www.tomei-p.co.jp/manuals_data/pdf/piston.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 71.70 | — | — | — | — | — | 10.00 | multivalve | none | — | Oct 25, 2026 |
| Mazda | BP-VE - NB Japan 2000-2005 | Roadster NBFL 1.8 S-VT Japan; 160 PS converted to mechanical hp. Sources: https://newsroom.mazda.com/en/publicity/release/2000/200007/0718ce.html ; https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 83.00 | 85.00 | — | 158 | 7,000 | 125 | 5,500 | — | multivalve | none | — | Oct 25, 2026 |
| Nissan | RB25DET | Skyline R33 GTS25t; compression left unset because references conflict | Sources: https://www.tomei-p.co.jp/manuals_data/pdf/piston.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 71.70 | — | — | — | — | — | — | multivalve | turbo | — | Oct 25, 2026 |
| Mazda | BP T/C - Mazdaspeed | Mazdaspeed MX-5 Miata NB 2004-2005 US; factory turbo, no VVT | Sources: https://news.mazdausa.com/download/cur_mspeed_specs.pdf | 4 | 83.00 | 85.00 | 6,500 | 178 | 6,000 | 166 | 4,500 | 9.50 | multivalve | turbo | — | Oct 25, 2026 |
| BMW | M50B20TU | E34 520i / E36 320i, single VANOS 1992-on | Sources: https://www.ms-motorservice.com/MediaAssets/spare-parts-for-modern-classic-and-classic-cars_1728820.pdf ; https://support.haltech.com/portal/en/kb/articles/m50-engine | 6 | 80.00 | 66.00 | — | — | — | — | — | 11.00 | multivalve | none | — | Oct 25, 2026 |
| Mazda | BP-Z3 - NB 2001-2005 US | MX-5 Miata NBFL 1.8 VVT US 2001-2005 | Sources: https://news.mazdausa.com/download/cur_mspeed_specs.pdf | 4 | 83.00 | 85.00 | 7,000 | 142 | 7,000 | 125 | 5,000 | 10.00 | multivalve | none | — | Oct 25, 2026 |
| Chevrolet | LS1 | Gen III 5.7L Corvette / Camaro / Firebird swap; ratings depend on donor. Source: https://www.mahle-aftermarket.com/media/local-media-north-america/pdfs-%26-thumbnails/catalogs-and-literature/all-products/ap-1-919-ls-parts-listing.pdf | 8 | 99.00 | 92.00 | — | — | — | — | — | — | modern-two-valve | none | — | Oct 25, 2026 |
| Mazda | BP-Z3 - NB 2001-2005 Europe | MX-5 NBFL 1.8 VVT Europe 2001-2005 | Sources: https://five-speed.dk/Artikler/MX5-Jub-Mag-EN.pdf | 4 | 83.00 | 85.00 | — | — | — | — | — | — | multivalve | none | — | Oct 25, 2026 |
| Nissan | RB26DETT | Skyline GT-R R32/R33/R34 | Sources: https://www.tomei-p.co.jp/manuals_data/pdf/piston.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 73.70 | — | — | — | — | — | 8.50 | multivalve | turbo | — | Oct 25, 2026 |
| Nissan | SR20DET | Silvia / 180SX / 200SX; stock geometry, ratings vary by donor | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf | 4 | 86.00 | 86.00 | — | — | — | — | — | — | multivalve | turbo | — | Oct 25, 2026 |
| Nissan | RB30ET | Holden VL Turbo | Sources: https://www.ms-motorservice.com/MediaAssets/2360526_ks_50003982_web.pdf ; https://support.haltech.com/portal/en/kb/articles/rb-engine | 6 | 86.00 | 85.00 | — | — | — | — | — | 7.80 | older-two-valve | turbo | — | Oct 25, 2026 |
| BMW | M50B25TU | E34 525i / E36 325i, single VANOS 1992-on | Sources: https://www.ms-motorservice.com/MediaAssets/spare-parts-for-modern-classic-and-classic-cars_1728820.pdf ; https://support.haltech.com/portal/en/kb/articles/m50-engine | 6 | 84.00 | 75.00 | — | — | — | — | — | 10.50 | multivalve | none | — | Oct 25, 2026 |