Will ISF Headers Fit?
#16
Pole Position
iTrader: (6)
Yes the headers will fit. The flamges from the manifolds are 30 degrees further to the outside than on the ISF. Otherwise, the manifold pipes are identical to the ISF
However, once you decatt your primaries, you might ( and I use this mildly ) get a CEL that retards timing into failsafe mode, or just get a CEL without any retardation.
However, once you decatt your primaries, you might ( and I use this mildly ) get a CEL that retards timing into failsafe mode, or just get a CEL without any retardation.
#21
Do you actually have to remove the cats when going with headers? Im in TX so no cats = no inspection. Since the cats are huge bottlenecks i wonder if you gain anything significant by adding headers
#23
Pit Crew
The ISF starts off with a much better tri Y header right from the factory, so do the 5.7 3UR equiped Tundra/Land Cruisers. They see awesome gains from both short and long tube headers.
Short tube headers can retain converters in the factory locations.
Short tube headers can retain converters in the factory locations.
#26
Lexus Test Driver
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LS460: http://lexus.sewellparts.com/oem-cat...S460-2009.html
ISF: http://is.sewellparts.com/oem-catalo...-ISF-2011.html
The headers look the same.. what do you guys think? Sewell has no replacement parts for the GS460!
ISF: http://is.sewellparts.com/oem-catalo...-ISF-2011.html
The headers look the same.. what do you guys think? Sewell has no replacement parts for the GS460!
#29
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if you looked deeper, you'd have seen that the engines part numbers are identical too.. and last time I checked, they are not .. PNC is not the Part number.. the one under "details" is.
Last edited by Rider; 09-02-12 at 04:25 PM.