1.4T Upgraded Bypass Valve Spring

One of the best parts of owning a turbo car are the turbo noises, and who doesn’t want more of those? This is the perfect quick upgrade for your 1.4L Sonic or Cruze. Simply swap this upgraded spring in for the stock bypass valve spring and you’re good to go. The upgraded spring will get you more pronounced BPV/BOV noise along with reduced off throttle whistle. Note: this does not provide any performance benefit.

Fits: LUV/LUH/LUJ stock turbo and ZZP Big Wheel turbos. Cannot guarantee compatibility with competitor's turbos.

Customer Reviews

4.8 Based on 18 Reviews

5 ★

89%

4 ★

3 ★

11%

2 ★

1 ★

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12/06/2021

Ben H.

United States

ZZP Bypass Spring Upgrade

Good quality well-made much stiffer than the stock spring.

1.4T Upgraded Bypass Valve Spring

10/24/2021

Hunter S.

United States

No difference but no big deal.

Got here fast and it wasn’t too bad of an install, but I was somewhat disappointed that my car sounded exactly the same as before. For $15, I’m not really too frustrated, no harm I guess.

1.4T Upgraded Bypass Valve Spring

08/12/2021

Logan S.

United States

Non of the parts go to the Cruze like the description stated

I purchased 1.4T high voltage coil pack/ 1.4t valve cover an NGK iridium plugs along with the1.4T bypass valve spring each one stated they were for the 1.4T which I was quickly proved wrong where as not a single part goes to the car

1.4T Upgraded Bypass Valve Spring

08/06/2021

Kelvin S.

United States

Very happy

Very well made product

1.4T Upgraded Bypass Valve Spring

06/02/2021

Keith Z.

United States

Review

To be honest the spring did not create any extra noise or sounds enhancement above what I had already experienced with my stock spring setup, I run a K&N short ram intake and deleted the resonator, which already gave a good noise for the turbo, the new zzp spring didn’t enhance the sound any further than what it already was enhanced to by my setup. No harm no foul though for the price it was worth a shot.

1.4T Upgraded Bypass Valve Spring

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1.4T Upgraded Bypass Valve Spring

ZZP Bypass Spring Upgrade

No difference but no big deal.

Non of the parts go to the Cruze like the description stated

Very happy

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