Ratings:
SAE J30R7 50PSI max operating pressure 175PSI minimum burst pressure
SAE J30R9 125PSI max operating pressure 900PSI minimum burst pressure
SAE J30R10 rated for use inside fuel tank. This hose will not break down from raw fuel exposure.
The earls stainless braided hoses have diffrent ratings that can be found here [ [ [ http://www.fluidsystemseng.com/ ] ] ]The stock twinturbo operates at a pressure around 40-45psi. So the cheaper hose will probably not burst right away, but you run a chance of failure and premature wear. Also on Goodyears website they issue a "Warning" to only use SAE J30R9 for fuel injected vehicles. The J30R9 hose will also withstand ethenol and methenol blended fuels. This info can be found here [ [ [ http://www.goodyearbeltsandhose.com/cars/inject.html ] ] ] This is the hose I purchased at AutoZone for about $4 per foot, and I recomend the SAE J30R9 for any replacement on a fuel injected car.
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