Part numbers are different yes but due to manifold changes. The actual turbo wheel sizes have been verified to be the same. The 20 is tuned with more boost taper and less overall boost period. Remember this turbo falls out of efficiency at 22-23 psi so more boost becomes inefficient.The 2021 MKV Supra's B58M3001 uses a larger turbo and the part number is (11657934387). The 2020 MKV Supra has a smaller turbo on it's B58B30C motor and the part number is (11657934332). The factory boost pressure is also higher on the 2021 model MKV Supra as well by about 4-5psi.
For the 500-550whp mark the B58B30C (2020 model) with higher compression given the same turbo size and same boost will be the winner. For higher boost pressures 25+psi I will give it to the B58M3001 (2021 model) with it's 10.2:1 compression, as it will be able to handle higher target PSI in the tunes.
stop trolling the Supra fb groups and pretending you have a Supra or tell everybody to post up their cars for sale when you don’t even have any money to buy one... Weren’t you the one who got kicked out of a Supra owner only Facebook group? LmaoDear Axix23 and friends,
Please accept our apologies for any rectalgia you currently suffer. Please tell your boyfriends to take it easy on you next time.
Akio Toyoda and Tetsuya Tada
Everything I've heard from tuners says the engines are identical when tuned. The advantage is thought to be had after 750+whp but it's only theory at this pointI personally think the 2020 will perform better on the street when tuned vs a tuned 2021. 2021 owners will likely need to go big turbo or over work the stock turbo to see the nice gains that’s 2020 owners have seen. We shall see.
Other stock dyno reports that came out last year also reported the 2020 at 400+ crank HP, with some as high as almost 420 HP. It's consistent with other results.I don't recall seeing anything (of course, I haven't seen all that have been done) that had it less than ~ 390 HP at the crank.Did anybody catch that the 2020 dynoed at 346whp? That’s a high reading dyno! l
Could you please post a data log and dyno for a tuned 2021 MKV. Didn't know that tuners could get them before a dealer could guess I live under a rock these days. LOLEverything I've heard from tuners says the engines are identical when tuned. The advantage is thought to be had after 750+whp but it's only theory at this point
I called into BMW and Toyota and neither of the parts departments could give specifications on compressor sizes for either part numbers. I was told by a turbo manufacturing company that the actual compressor wheels are in fact different in size as well as the hot side too. Stock turbo on B58B30C does just fine at 22-23psi on top it's all based on the tune, fueling and timing. Mine doesn't fall off especially when I'm on MS109 it's a fucking raped ape all the way through the rpms. Maybe on shitty 93-91 CA pump gas it will go limp dick up top but not when it's got some race fuel in it LOL.Part numbers are different yes but due to manifold changes. The actual turbo wheel sizes have been verified to be the same. The 20 is tuned with more boost taper and less overall boost period. Remember this turbo falls out of efficiency at 22-23 psi so more boost becomes inefficient.