BMW M3 / M4 F80 / F82Stage 1 to Stage 4 tuning guide

What we'd do

On an F80 M3 or F82 M4 our pick is Stage 1 on a 98 octane map: 500–540 hp from 425 hp, software only. These cars are now six to twelve years old, so before any tune we would check two things that have nothing to do with power: the crank hub and the top-mount charge cooler.

Which tune depends on the car. bootmod3 and MHD both include a DCT gearbox flash, and MHD costs €279 plus €109 per map pack. But bootmod3 says 2019-on cars with March 2019 software need a bench unlock first, and MHD says cars built after June 2020 and European cars with a particulate filter always do. If you want no unlock and an easy way back, the JB4 piggyback is the simple route. If you want paperwork, AC Schnitzer's plug-in unit has a German approval on DCT cars, works with the filter and comes with a 36-month warranty. Ask for its price: the guide's range for the European options is €609–€3,743.

The crank hub is the known weak point. The S55 holds its timing gear on the crank with one bolt, and Evolve warns it can slip even on stock cars. Owners on Bimmerpost run Stage 1 on the stock hub every day, and a long-running master thread says reported failures are rare. Our rule: at Stage 1, it's your call; before Stage 2, downpipes or more torque, fit a pinned hub ($429–$975 in the guide). Add a heat exchanger or a CSF charge cooler if the car sees track days or long hot climbs.

What we would skip: catless downpipes, which Litchfield sells as off-road only and which fail the test, and Stage 3. Turbos cost $2,995–$5,685, Mosselman's 620 hp needs catless downpipes, and the biggest figures need E85 or methanol. Budget for a sensible car: $579–$924 for the tune, plus the hub, before shipping, tax and fitting.

Tuning it in Israel

New price in Israel

No longer sold new; the importer now sells the G80 and G82. Delek Motors launched the F80 M3 sedan at ₪690,000 and the F82 M4 coupé at ₪700,000, both with the 7-speed dual-clutch gearbox (Walla, 10 June 2014). We found no dated used-price range, so we don't give one.

Parts from abroad

At the Bank of Israel representative rate of 26 October 2026 ($1 = ₪3.078), with the combined 40.66% for car parts above $75 (see importing parts):

• VAC 4-pin crank hub kit $974.95 × 3.078 = ₪3,001, plus 40.66% = about ₪4,221 (₪1,220 tax). It sits just under $1,000.
• CSF top-mount charge cooler $1,695 × 3.078 = ₪5,217 before tax, or about ₪7,339 at the same 40.66%. That is over $1,000, beyond the personal-parcel rules on our page.

Both before shipping, which is taxed too, and before labour: the hub is a timing job for a shop that has done one.

Fuel

Israel sells 95 and 98. Litchfield's Stage 1 has a 95 map (about 500 bhp) and a 97–99 map (about 520 bhp); AC Schnitzer and Mosselman write their figures for 98. Dinan's and bootmod3's are for US 91 and 93, which are roughly our 95 and 98. Run 98 and a map written for it, and ignore the E85, methanol and race-fuel figures. See 95 vs 98.

Regulation 380 and the test

Under Regulation 380 a special exhaust and accessories the maker didn't design are a change of structure, and the Road Safety Authority reads it as covering engine software too. Downpipes, an exhaust or a bigger charge cooler need a certified part, a licensed installer and the change recorded in the licence. Later European cars have a particulate filter. Catless downpipes and filter deletes fail the annual test, so keep the original parts. Tell your insurer in writing.

Where to get it done

From the dealer pages of brands in this guide (checked October 2026): bootmod3 lists MB Autosport (Kafr Kana) and Shenhav Motors (Ramat HaSharon); Akrapovič lists Frontech (Tzur Yigal). None of the other tuners here lists an Israeli dealer. We have no commercial link with them. Contacts are in the box on the Hebrew guide; see also tuning in Israel.

Prices and rules checked 2026-11-01.

Also useful: tuning shops in Israel, the import tax calculator and the annual test checklist.

What owners ask

Is a Stage 1 tune safe on the stock crank hub?

An owner held off tuning his F80 for exactly this reason and asked in 2022. Replies said bootmod3 Stage 1 is mild and widely run, one recommended a charge pipe as well, and several pointed out that hubs have spun on cars with no tune at all. So a tune doesn't create the risk, but more torque adds to it. Litchfield draws its line at Stage 1: it recommends its bolt capture for cars running above that.

Sources: Bimmerpost: can I safely run BM3 Stage 1? (2022), Litchfield: M3 F80 / M4 F82 power upgrades

Which crank hub fix should I buy?

Bimmerpost's crank hub master thread explains the problem: nothing keys the timing gear to the crank, only the clamping force of one bolt. It also says reported failures are few and that talk of certain engine failure was a sales line. Its main warning is about one modified hub sold early on, which it says could fail worse than the original. So buy a proven design and have it fitted by a shop that has done the job. VAC's kit ($974.95 on its page) has a one-piece hub and timing gear, a keyed oil pump gear and a new BMW bolt, and needs drilling.

Sources: Bimmerpost: crank hub master thread, VAC Motorsports: S55 4-pin crank hub kit

The charge cooler's coolant tank was empty. Is the cooler leaking?

A 2016 M4 owner found the top-mount cooler's separate coolant reservoir bone dry. Replies told him to refill with the right mix and run the purge cycle with the cap off, and to keep coolant away from the engine computer below. One owner said his factory cooler cracked and he felt power fade on a hot day at full throttle; another runs a Wagner unit and says the stock one is fine for everything but hard track use, as long as it doesn't leak. Check that reservoir before you tune. CSF's replacement ($1,695) has a 60% larger core.

Sources: Bimmerpost: leaking stock top-mount intercooler? (2021), CSF: F8X top-mount charge-air cooler

My 2020 car has particulate filters. Should I remove them?

A European M4 owner asked in August 2026 how to remove the filters without making the car too loud. Replies suggested a single or resonated midpipe; one owner who fitted an Akrapovič midpipe found it quiet until he also changed the rear silencer. In Israel the answer is simpler: the filter has to stay for the annual test. You don't need to remove it to tune: Litchfield says its Stage 1 works with the filters and the standard exhaust in place.

Sources: Bimmerpost: removing GPF/OPF on a 2020 F82 (2026), Litchfield: M3 F80 / M4 F82 power upgrades

How much do I lose on 95 instead of 98?

About 20 bhp at Stage 1, by Litchfield's figures: its 95 RON map makes about 500 bhp and 485 lb-ft, its 97–99 map about 520 bhp and over 510 lb-ft. Israeli 98 sits in the middle of that second band, so expect about 520. If you can't always buy 98, run the 95 map rather than a 98 map on 95.

Sources: Litchfield: M3 F80 / M4 F82 power upgrades