Customer Reviews
4.8 Based on 19 Reviews
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AG
01/07/2022
Anthony G. 
Slightly quieter , yet cleaner sounding when boost blows off. Takes more pressure to blow off than the stock spring. Leading to less little blow offs and better sounding ones when it does.
BH
12/06/2021
Ben H. 
ZZP Bypass Spring Upgrade
Good quality well-made much stiffer than the stock spring.
HS
10/24/2021
Hunter S. 
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.
LS
08/12/2021
Logan S. 
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
KS
08/06/2021
Kelvin S. 
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