VTT Plug and Play S58 Single HPFP Conversion Kit

VTT-S58-SINGLE-HPFP

Description

VTT Plug and Play S58 Single HPFP Conversion Kit

The Only Proven Solution to S58 Exhaust Cam Timing Drift — Without Locking the Cam! Tested at over 1400WHP!

We are proud to introduce the first and only kit on the market that completely resolves the notorious S58 exhaust cam timing drift at high RPM — all without sacrificing the benefits of variable valve timing by locking the cam.

The Problem: Exhaust Cam Timing Drift

If you’ve been deep in the S58 tuning world, you’ve probably heard about — or logged — the issue: at high RPM and load, the exhaust VANOS sprocket simply can’t keep up with commanded timing. Why? Because the exhaust cam gear is driving more components than ever before, including:

• Two high-pressure fuel pumps (HPFPs)

• Upgraded, higher-pressure valve springs

• Increased boost levels and higher cylinder pressures

Under these conditions, requested and actual exhaust cam timing start to drift apart. This can cause a huge drop in power — we’ve seen losses of 200–250whp — because optimal valve timing is essential for top-end performance.

And it’s not just at the top end — valve timing plays a huge role in spool-up and mid-range torque as well.

Why Locking the Cam Isn’t the Answer

A popular “fix” is to lock the exhaust cam sprocket. While this can prevent drift at high RPM, it comes with a big trade-off:

• If you lock for top-end power → you sacrifice spool and mid-range torque.

• If you lock for spool and mid-range → you lose high-RPM horsepower.

In our testing, locking for top-end power resulted in 500–800 RPM slower spool, a massive loss in responsiveness. This is the exact compromise variable valve timing was designed to eliminate when it was introduced in the 1980s.

Variable timing lets you optimize low-end torque and spool while still delivering maximum top-end flow — and that’s exactly what we preserve with this kit.

The VTT Solution: Reduce the Load by 50%

The root cause of the S58 timing drift is mechanical load on the exhaust cam gear. Our solution is simple but effective:

• Remove the forward HPFP — instantly cutting the driven load by half.

Here’s why it works:

• The S58 does not need two HPFPs for serious builds — anyone pushing enough power to consider cam locking is already running supplemental fueling (port injection).

• At high RPM, direct injection (DI) is only contributing ~20–30% of total fuel delivery on big-power setups.

• By slightly increasing port injection contribution (usually only 10–15% more up top), you can completely offset the loss of the forward pump.

For reference, Gen 2 B58 platforms are making 1500+ whp on a single HPFP without any fueling limitations.

Built Like OEM — But Stronger

You won’t find any braided or aftermarket-style lines with this kit, the VTT S58 Single HPFP Conversion Kit uses heavy-duty stainless steel hardlines manufactured using the same forming/swedging techniques as BMW OEM lines.

• OEM-style fit and routing — clean, factory appearance

• Superior durability under extreme heat and pressure

• No braided hoses or extra fittings to leak or wear out

What’s Included

• (1) CNC-machined billet HPFP block-off plate

• (1) Rear high-pressure stainless hardline with integrated sensor port

• (1) Front high-pressure stainless hardline replacement

• (1) Plug and play 2-1 HPFP wirnig harness

Installation & Tuning Requirements

This kit requires custom tuning changes, including:

• Adjusting PI (Port Injection) strategy to compensate for the removed pump.

• Depending on power level, increasing oil pressure at high RPM (This is OPTIONAL, but something we recommend in tandem with the kit.

Note: This is an engine performance component designed for advanced builds. Professional installation and tuning are mandatory.

 Eliminates S58 exhaust cam timing drift without cam locking
 Maintains full variable valve timing benefits — no top-end vs. low-end trade-offs
 OEM-style stainless steel hardlines — no braided lines
 Proven on high-power builds — a mechanical fix to a mechanical problem

If you want maximum top-end power, instant spool, and consistent timing control on your S58, the VTT Single HPFP Conversion Kit is the only complete solution.