• NRW S58 Exhaust Cam Blocks
  • NRW S58 Exhaust Cam Blocks
  • NRW S58 Exhaust Cam Blocks
  • NRW S58 Exhaust Cam Blocks

NRW S58 Exhaust Cam Blocks

Degree
$99.95
$99.95
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Question about this product?

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For those making power with a single turbo or a built engine running high boost, exhaust cam drift ("cam walk") is a common limit your tuner will run into. NRW Design's S58 exhaust cam blocks are designed to help prevent cam walk so your tuner can dial in the car without this sporadic issue.

Exhaust cam load: On the S58, the exhaust camshaft drives two high-pressure fuel pumps. When tuned, especially with stiffer valve springs or higher fuel-pressure demands from upgraded HPFPs, the extra mechanical load can exceed what the VANOS system can comfortably control, causing exhaust cam timing drift.

Fuel-pressure variability: As cam timing wanders at high load or RPM, the HPFPs are no longer driven in a stable pattern. Fuel pressure can sag or oscillate, leading to inconsistent AFRs and DME interventions such as timing pulls or throttle closures.

Erratic engine behavior: With cam phasing and fuel pressure both fluctuating, the engine becomes less predictable, which can undermine both performance and long-term reliability at elevated power levels.

Available in 102°, 109°, and Full Lock. Price is for the cam blocks only.

NRW S58 Exhaust Cam Blocks

$99.95

Does it come with a warranty?

Parts are covered by the manufacturer's warranty where one is offered. If something goes wrong, contact us and we'll help you with the claim.

What happens if I don't like it?

New, uninstalled parts in their original packaging can be returned within 30 days of delivery. Suspension components (coilovers, springs and dampers), wheel spacers and batteries can't be returned, and a restocking fee applies to approved returns. See our refund policy for details.

How fast is shipping?

In-stock orders usually ship within 1–3 business days. Many parts ship directly from the manufacturer or distributor. Orders over $200 ship free with standard shipping, and faster UPS and USPS options are available at checkout. See our shipping policy.

What's the returns policy?

You have 30 days after receiving your item to request a return. Parts must be new, uninstalled and in their original packaging. Contact us first to start a return. Full details are in our refund policy.

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