So in preparation for installing my new setup (SSv1s+63.5mm matching section 1 and 2+CSL Airbox), I finished tuning my current "basic" setup by jumping on the dyno at EAS. Since a lot of E46 M3s run on this dyno I thought it'd be a great opportunity to baseline this setup, compare to other M3s and see what the more advanced setup offers over the cheaper Euro headers and Eventuri intake.
Engine Mods:
Eventuri intake + upgraded intake elbow
Euro OEM headers
Bosch 550cc injectors
Walbro 485 fuel pump
Modded OEM section 1 (added AR20 resonator)
Supersprint section 2 resonated
Dixis Spirit titanium section 3
HTE E85 dyno tune
Engine mileage: 232k miles
Unfortunately it was breaking up a bit up top so we ended with 321 whp/250 wtq and Hassan suggested changing spark plugs and coils (since they've been beaten on for about 25k miles) and we would end up with about 330 whp. A stock E46 M3 dynos around 270-280 whp on this dyno so getting another 50-60whp over USDM stock with intake, Euro headers and E85 tune is really amazing for not a lot of dough. The midrange and top end vs a stock setup/tune M3 is night and day, while the low end feels stout and accessible.
I'm hoping to break 360 with the SSv1s + section 1 + section 2 twin tube and CSL airbox. Once I install all of that I'll head back to EAS in the next few weeks and do a full Alpha N retune. It is honestly mindblowing to me how much more power you can pull out of a 3.2L N/A setup with such simple modifications, especially one with 232k miles. Once I finish with Setup #2 I'll get some 280/272 cams and do one final retune.
Thanks for reading. 🤙 Big shoutout to Hassan at HTE for being a wealth of knowledge and support. If you need your M3 tuned, he is superb.
Engine Mods:
Eventuri intake + upgraded intake elbow
Euro OEM headers
Bosch 550cc injectors
Walbro 485 fuel pump
Modded OEM section 1 (added AR20 resonator)
Supersprint section 2 resonated
Dixis Spirit titanium section 3
HTE E85 dyno tune
Engine mileage: 232k miles
Unfortunately it was breaking up a bit up top so we ended with 321 whp/250 wtq and Hassan suggested changing spark plugs and coils (since they've been beaten on for about 25k miles) and we would end up with about 330 whp. A stock E46 M3 dynos around 270-280 whp on this dyno so getting another 50-60whp over USDM stock with intake, Euro headers and E85 tune is really amazing for not a lot of dough. The midrange and top end vs a stock setup/tune M3 is night and day, while the low end feels stout and accessible.
I'm hoping to break 360 with the SSv1s + section 1 + section 2 twin tube and CSL airbox. Once I install all of that I'll head back to EAS in the next few weeks and do a full Alpha N retune. It is honestly mindblowing to me how much more power you can pull out of a 3.2L N/A setup with such simple modifications, especially one with 232k miles. Once I finish with Setup #2 I'll get some 280/272 cams and do one final retune.
Thanks for reading. 🤙 Big shoutout to Hassan at HTE for being a wealth of knowledge and support. If you need your M3 tuned, he is superb.
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