I looked for any posts and didnt see any info

 

I think with SS headers it was 20 somin. That's on a GS4 of course.

 

If you get intake, exhaust, and header with deleted cats on a GS300 and tune it correctly with an SAFC...you should be able to gain up to 25-30hp or so. For the GS400/430, the same combo tuned correctly should yield 40-45hp increase or so. I'm sure on the numbers for the GS300, but not too sure on the GS4/430's. Correct me if I'm wrong on that.

 

I did an extensive search before purchasing mine and found out that no one really has any dyno data to prove Hp/Torque increase over stock. You can fell it on the high end but of course I haven't dyno'd my car either.

 

You S & S header guys suck... . Just messing around; I just ordered some and I'm going to dyno the car once I get them for some before and after numbers.

 

You sir, will be a Lexus V8 owners best friend especially one interested in buying these headers

 

pearlpower dyno his sc400 an gained 27hp forgot the tq
they do make a diffrence. i dropped 3/10 on the 8th mile

 

I hate this thread!



j/k


Now i need to spend more money on my car! ahhhhhh, i want some headers.