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Technical Topics B58 6-Cylinder Turbo Engine / Drivetrain / Exhaust Modifications AC Schnitzer engine performance upgrade

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      11-22-2021, 01:00 PM   #1
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AC Schnitzer engine performance upgrade

Has anybody had an AC Schnitzer engine performance upgrade done on their M340i. Report’s please
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      11-23-2021, 07:09 AM   #2
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Has anybody had an AC Schnitzer engine performance upgrade done on their M340i. Report’s please
Isn't that one a mild piggyback that costs thousands?
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      11-23-2021, 07:11 AM   #3
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Has anybody had an AC Schnitzer engine performance upgrade done on their M340i. Report's please
Isn't that one a mild piggyback that costs thousands?
Yes it brings the hp to 420 but gives you 100nm more torque from 500 to 600nm. That's the shit that pushes you back in the seat. Other upgrades give you big hp which does no good to the engine
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      11-23-2021, 07:27 AM   #4
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Other upgrades give you big hp which does no good to the engine
I'm not sure that makes sense.
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      11-23-2021, 07:29 AM   #5
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With the torque coming in at lower revs you don't have to Rev the shit out of your engine
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      11-23-2021, 12:24 PM   #6
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Torque is what kills the engine, especially down low. The gain u get from this isn't enough to cause concern compared to stock, but when u look at tuned cars u will see they start to limit torque after a certain point unless the engine is built.
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      11-23-2021, 12:49 PM   #7
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It's about $8000 after installation. At that price point, you should have opted for the M3.
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      11-23-2021, 01:02 PM   #8
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Quote:
Originally Posted by G_B58 View Post
Torque is what kills the engine, especially down low. The gain u get from this isn't enough to cause concern compared to stock, but when u look at tuned cars u will see they start to limit torque after a certain point unless the engine is built.
AC Schnitzer provides a 4-year engine warranty so I wouldn't worry about the extra torque destroying your engine.
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      11-23-2021, 07:11 PM   #9
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AC Schnitzer provides a 4-year engine warranty so I wouldn't worry about the extra torque destroying your engine.
I know, that's why I said I wouldn't worry about it because it's not much more than stock. The reason they offer a matching warranty is because they know the engines can handle much more than stock, so they bump the power slightly knowing the odds it will damage anything are extremely rare. Dinan has been this for a long time, except they offer a flash tune over a piggyback, and the matching warranty.
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      11-24-2021, 08:48 AM   #10
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Quote:
Originally Posted by G_B58 View Post
I know, that's why I said I wouldn't worry about it because it's not much more than stock. The reason they offer a matching warranty is because they know the engines can handle much more than stock, so they bump the power slightly knowing the odds it will damage anything are extremely rare. Dinan has been this for a long time, except they offer a flash tune over a piggyback, and the matching warranty.
I have always felt the warranty ( regardless of the brand) is more of a marketing tactic.
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      11-24-2021, 09:04 AM   #11
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Too much money for a small gain, regardless of warranty or not.
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      11-24-2021, 12:10 PM   #12
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I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
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      11-30-2021, 09:43 PM   #13
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Quote:
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I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
No it costs around £3800 sterling
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      11-30-2021, 11:36 PM   #14
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Quote:
Originally Posted by VipinLJ View Post
I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
PSA:
So it seems as though there is a black-friday/small-business-saturday/cyber-monday sale going on where you can pick up the piggyback for $7,695.00 US vs the usual $8,995.00. Here is a screen shot from the ACSchnitzer site. I'm sure there were some people on the fence at $8,000.00 (as you mentioned) or even $8,995.00 (from their website) - so this might be the time to pull the trigger gents

ps- looks like there are a couple finance options (see listing) starting at $268.00 per month so if spreading out the payments over the next couple years for your new piggyback makes more sense to you - might want to check that box
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      11-30-2021, 11:53 PM   #15
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Quote:
Originally Posted by chenry View Post
Quote:
Originally Posted by VipinLJ View Post
I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
PSA:
So it seems as though there is a black-friday/small-business-saturday/cyber-monday sale going on where you can pick up the piggyback for $7,695.00 US vs the usual $8,995.00. Here is a screen shot from the ACSchnitzer site. I'm sure there were some people on the fence at $8,000.00 (as you mentioned) or even $8,995.00 (from their website) - so this might be the time to pull the trigger gents

ps- looks like there are a couple finance options (see listing) starting at $268.00 per month so if spreading out the payments over the next couple years for your new piggyback makes more sense to you - might want to check that box
That's beyond stupid. You can get a big turbo upgrade for less than that.
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      12-01-2021, 02:58 AM   #16
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AC Schnitzer is like the Louis Vuitton of car parts. In no small part by their past relationship with BMW and their racing heritage.

In the end though it's just a fancy bag that holds shit the same as any normal bag.

If I went through the typical bolt-ons and were ready for a piggy back type upgrade…I'd look to Dinan or Manhart. Manhart quoted me about 2 grand US for their piggy back. 2021 M440 Coupe on 93 (471hp and 620nm. So they claim. I would go that route. proper exhaust and a few minor bolt ons you could easily hit over 500hp and 650nm.


Don't worry about the B58. those numbers won't hurt it in the slightest. ymmv of course.
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      12-01-2021, 10:22 AM   #17
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Who actually pays these prices? If you're spending $7695 for a tune you may as well spend another $6395 and get their exhaust too, LOL.

And don't forget to pickup a pair of red AC Schnitzer shifting paddles for only $520.
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      12-01-2021, 10:55 AM   #18
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In Europe this kit is sold for roughly €4k which is expensive but not as expensive as in the US apparently... I don't think euro to dollar exchange rate is that high.

The price could be justified because I believe it's legal to mod your vehicle with this kit (in some European countries like Germany anyway) as it keeps emissions within spec etc.
In the country I live in 'engine tuning' is basically not allowed, so I you're gonna risk tuning your car the German 'Gutachten' for this kit brings little extra but costs.
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      12-01-2021, 11:02 AM   #19
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Quote:
Originally Posted by chenry View Post
Quote:
Originally Posted by VipinLJ View Post
I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
PSA:
So it seems as though there is a black-friday/small-business-saturday/cyber-monday sale going on where you can pick up the piggyback for $7,695.00 US vs the usual $8,995.00. Here is a screen shot from the ACSchnitzer site. I'm sure there were some people on the fence at $8,000.00 (as you mentioned) or even $8,995.00 (from their website) - so this might be the time to pull the trigger gents

ps- looks like there are a couple finance options (see listing) starting at $268.00 per month so if spreading out the payments over the next couple years for your new piggyback makes more sense to you - might want to check that box
I think it pays to shop around
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      12-01-2021, 12:27 PM   #20
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Quote:
Originally Posted by Paul Moran View Post
Quote:
Originally Posted by chenry View Post
Quote:
Originally Posted by VipinLJ View Post
I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
PSA:
So it seems as though there is a black-friday/small-business-saturday/cyber-monday sale going on where you can pick up the piggyback for $7,695.00 US vs the usual $8,995.00. Here is a screen shot from the ACSchnitzer site. I'm sure there were some people on the fence at $8,000.00 (as you mentioned) or even $8,995.00 (from their website) - so this might be the time to pull the trigger gents

ps- looks like there are a couple finance options (see listing) starting at $268.00 per month so if spreading out the payments over the next couple years for your new piggyback makes more sense to you - might want to check that box
I think it pays to shop around
That's still over $5200 American which is way too much for that.
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      12-01-2021, 12:36 PM   #21
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Quote:
Originally Posted by Paul Moran View Post
Quote:
Originally Posted by chenry View Post
Quote:
Originally Posted by VipinLJ View Post
I thought people were kidding when they said the piggyback costs $8k!!! They better provide a spare engine along with the piggyback for that much money!
PSA:
So it seems as though there is a black-friday/small-business-saturday/cyber-monday sale going on where you can pick up the piggyback for $7,695.00 US vs the usual $8,995.00. Here is a screen shot from the ACSchnitzer site. I'm sure there were some people on the fence at $8,000.00 (as you mentioned) or even $8,995.00 (from their website) - so this might be the time to pull the trigger gents

ps- looks like there are a couple finance options (see listing) starting at $268.00 per month so if spreading out the payments over the next couple years for your new piggyback makes more sense to you - might want to check that box
I think it pays to shop around
You are absolutely right! Apparently AC Schnitzer prefers to sell through parts retailers and not directly to the customer.

Example: 330 exhaust

AC Schnitzer USA website $5595
Schmiedmann $2090 + VAT and shipping
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      12-23-2021, 04:00 PM   #22
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Quote:
Originally Posted by Rux View Post
AC Schnitzer is like the Louis Vuitton of car parts. In no small part by their past relationship with BMW and their racing heritage.

In the end though it's just a fancy bag that holds shit the same as any normal bag.

If I went through the typical bolt-ons and were ready for a piggy back type upgrade…I'd look to Dinan or Manhart. Manhart quoted me about 2 grand US for their piggy back. 2021 M440 Coupe on 93 (471hp and 620nm. So they claim. I would go that route. proper exhaust and a few minor bolt ons you could easily hit over 500hp and 650nm.


Don't worry about the B58. those numbers won't hurt it in the slightest. ymmv of course.
Very well said. The Dinan and Manhart would achieve similar performance and power gains with much less costs due to marketing and 'name brand' recognition
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