I am located in Cali, the headers are made overseas.
IMF headers holiday group buy $599!
- Thread starter Chase
- Start date
The 1UZFE EGR Delete Kit is available for sale here.
I am located in Cali, the headers are made overseas.
Actually, IIRC the 98-00 LS400, GS400 and SC400 were all 50 state certified LEV (low emission vehicle) with only the two primary cats and did NOT have a center cat. The 01 430 vehicles were ULEV (ultra low emission vehicle) and went back to the center third cat AND went back to the single tube exhaust manifold (the SC never got the dual tube)
First pic is a set of 430 ceramic core stock catalysts bolted to S&S headers. This is the same configuration for ALL Lexus V8 engines. They all have the primary cats bolted to the exhaust manifolds.
Next is a pic of the 98-00 metal substrate (excellent flowing) stock catalysts.
Actually the 98-00 Calif spec Lexus V8s did NOT have center cats. Also, the IMF headers for the SC400 will NOT fit an LS400. IMF may build cats to fit the GS400 that would physically fit an LS400 but modifications would be required and the stock catalysts would not fit. Passing emissions would be difficult. You could install a cat at the Y pipe junction and probably pass the emissions test but this would be WITH MODIFIED GS400 IMF headers IF and WHEN they get built. For now you could modify S&S headers for your LS to work with your stock cats as that is what I am doing. Not easy and not direct bolt in.
I am located in Cali, the headers are made overseas.
JBrady
Active Member
- Messages
- 1,776
- Location
- Houston Texas
Actually, IIRC the 98-00 LS400, GS400 and SC400 were all 50 state certified LEV (low emission vehicle) with only the two primary cats and did NOT have a center cat. The 01 430 vehicles were ULEV (ultra low emission vehicle) and went back to the center third cat AND went back to the single tube exhaust manifold (the SC never got the dual tube)
First pic is a set of 430 ceramic core stock catalysts bolted to S&S headers. This is the same configuration for ALL Lexus V8 engines. They all have the primary cats bolted to the exhaust manifolds.
Next is a pic of the 98-00 metal substrate (excellent flowing) stock catalysts.
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JBrady
Active Member
- Messages
- 1,776
- Location
- Houston Texas
Actually the 98-00 Calif spec Lexus V8s did NOT have center cats. Also, the IMF headers for the SC400 will NOT fit an LS400. IMF may build cats to fit the GS400 that would physically fit an LS400 but modifications would be required and the stock catalysts would not fit. Passing emissions would be difficult. You could install a cat at the Y pipe junction and probably pass the emissions test but this would be WITH MODIFIED GS400 IMF headers IF and WHEN they get built. For now you could modify S&S headers for your LS to work with your stock cats as that is what I am doing. Not easy and not direct bolt in.
