Headers
#2
Tech Info Resource
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No. There are none. They're also illegal in California.
#4
Lexus Fanatic
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Don't forget about the JUN-TW headers. They still aren't legal though.
http://www.l-tunedparts.com/product/?id=2673
http://www.l-tunedparts.com/product/?id=2673
They'll physically FIT an IS350... but their nation of origin only gets the IS250 and that is the engine for which they are designed (as in the size of the plumbing and whatnot is meant for the 250s engine so results on the 350 engine are unknown at best)
#5
Lexus Champion
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I might have it backwards, but if I remember correctly, the size of the primaries and collector actually favors the 350 more than the 250. I can't remember which thread this was discussed in, but I'm pretty sure it was Mazzuri that mentioned the diameters of the plumbing being better for the 350 than 250.
#6
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I might have it backwards, but if I remember correctly, the size of the primaries and collector actually favors the 350 more than the 250. I can't remember which thread this was discussed in, but I'm pretty sure it was Mazzuri that mentioned the diameters of the plumbing being better for the 350 than 250.
#7
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There was a thread about the Megan headers having a 1.75" primary diameter and that this would be too big for a street car. Maybe that is where it all started.
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#9
Pole Position
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forgive the ignorance but with that said, isnt it weird that your the 250 headers made bigger gains than the 350 ones?
#10
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#14
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They eliminate the primary cats.
#15