CTS Turbo Stage 2+ Turbocharger Upgrade for G80 BMW M3, G82 BMW M4, G87 BMW M2 and F97/98 BMW X3M/X4M with S58 Engine
- Description
- Fitment
- Refund Policy
CTS Turbo is excited to announce the release of our latest Stage 2+ designed specifically for the BMW S58 platform. This kit builds on the success and knowledge for the previous turbo projects we have made and incorporates new technology to optimize performance and maintain factory fitment.
Our engineers utilized transient flow analysis and flow bench testing to optimize the twin scroll turbine housing, while maintaining stock fitment, stock location, and using the stock wastegates. This allows for the use of any stock fitment downpipes, intakes, and charge pipes.
The result is an impressive 790whp to an absolutely staggering 959whp/727wtq.
The best part is that you can simply transfer your factory wastegate controllers, high performance downpipes, intake and charge pipes during the install. No custom parts are needed and all factory installation hardware and gaskets are used!
No need for cores to be sent in or purchased.
Each turbocharger is VSR balanced to exceed OE tolerances with upgraded heavy-duty journal bearings and thrust washers.
Our turbochargers are designed to move a lot of air at lower boost levels, which means you can make some serious power without over-speeding the turbos, which means reliable performance.
Features:
- Complete brand-new set of 2 turbochargers; no need for core to be sent it or purchased.
- Bolt-on journal bearing CHRA with HD bearings, turbine shaft diameter increased by 1.0mm and thrust surface increased by 2mm.
- Billet – blade compressor wheel, 53.0mm inducer, 70.0mm exducer with 72.6mm extended tip design.
- 9 blade Mar-M 246 Superalloy turbine wheel, 52mm inducer, 49.4mm exducer, high-flow.
- 316 stainless steel exhaust housings and wastegate components, the housing size was increased to allow for optimal exhaust flow. Which mean faster spool and less WGDC required.
- VSR Balanced to exceed OE tolerances
- Compatible with factory installation hardware (not included)
- Compatible with factory wastegate actuators (not included, use your original wastegate actuators). ACTUATORS MUST BE CALIBRATED WITH ISTA+ BEFORE USE. 90% WGDC MAX.
Fitment:
- G80 BMW M3/M3 Competition S58
- G82 BMW M4/M4 Competition S58
- G87 BMW M2 S58
- F97 BMW X3M/ X3M Competition
- F98 BMW X4M/ X4M Competition
Use of high-flow turbo inlet pipes is strongly recommended, see CTS-HW-547
NB: professional installation and tuning are required. Break-in period required. Max boost of 36psi. Custom tuning using Bootmod3, as well as additional components such as fuelling, and charge air cooler upgrades are required. We recommend custom tuning by Paul Johnson Tuning.

Returns
Our policy lasts 14 days. If 14 days have gone by since your purchase, unfortunately we can’t offer you a refund or exchange. All items are subject to 15% restocking fee from the manufacturer.
To be eligible for a return, your item must be unused and in the same condition that you received it. It must also be in the original packaging.
Additional non-returnable items:
Gift cards
Downloadable software products
To complete your return, we require a receipt or proof of purchase.
Please do not send your purchase back to the manufacturer.
There are certain situations where only partial refunds are granted (if applicable)
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
If you would like to start a return please click here
Refunds (if applicable)
Once your return is received and inspected, we will send you an email to notify you that we have received your returned item. We will also notify you of the approval or rejection of your refund.
If you are approved, then your refund will be processed, and a credit will automatically be applied to your credit card or original method of payment, within a certain amount of days.
You will be responsible for paying for your own shipping costs for returning your item. Shipping costs are non-refundable. If you receive a refund, the cost of shipping to you will be deducted from your refund. If your original order qualified for free shipping, the actual cost of shipping the item to you will still be deducted from your refund.
Late or missing refunds (if applicable)
If you haven’t received a refund yet, first check your bank account again. Then contact your credit card company, it may take some time before your refund is officially posted. Next contact your bank. There is often some processing time before a refund is posted. If you’ve done all of this and you still have not received your refund yet, please contact us at info@amtuning.ca.
Sale items (if applicable)
Only regular priced items may be refunded, unfortunately sale items cannot be refunded.
Labor Fees (if applicable)
AM Tuning Canada is not responsible for, and shall not be liable for, any labor fees, installation charges, removal charges, diagnostic fees, or other service-related costs incurred by the customer or any third party in connection with the installation, removal, modification, servicing, or use of any products purchased from AM Tuning Canada. Unless expressly agreed to in writing by AM Tuning Canada, all such labor and service costs are the sole responsibility of the customer.
Exchanges (if applicable)
To start an exchange, click here
Non-refundable items
The following items are non-refundable and non-returnable once purchased: oils, fuel or oil additives, filters, tuning cables, OBDeleven products, Braum seats, spark plugs, coil packs, and similar consumable, wheel spacers, wheels bolts, license plate brackets, electronic tuning components and any other product subject to discretion of AM Tuning Canada.
Other products from brands such as MHD, Bootmod3, Ecutek, Braum racing, Novitec are also non-refundable and non-returnable.
All sales of these items are final and are subject to the policies and discretion of AM Tuning. By completing a purchase, the customer acknowledges and agrees to these terms.
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