Exhaust Manifold Choices
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#10
Tech Info Resource
iTrader: (2)
Pretty grim that there is so little room to work in the IS F engine bay. None of these headers are equal length, and I doubt it's possible since all three (I'm very certain) tried to achieve this.
#11
^^^^Lance, you're right of course. But they all most certainly flow better than stock And, the stock F manifolds certainly look like they flow better than the other stock Lexus manifolds I've seen. The others seem to be a log design with three or four holes (depending on the number of cylinders) in it
Lou
Lou
#14
Advanced
iTrader: (3)
Was going to post this in the PPE thread but figured it probably belonged here instead.
So someone help clue me in here cause I am obviously not understanding something right. I know that from one dyno to the next things read differently however.
Takeda Intake, PPE headers, Custom Dual Exhaust = 382whp 368tq
https://www.clublexus.com/forums/is-...headers-6.html
Tom's Filter + JoeZ Intake + Sikky Headers + ISS-Forged Exhaust = 416whp and 350tq
https://www.clublexus.com/forums/is-...lter-joez.html
Injen Intake + Sikky Headers + JoeZ Exhaust = 420.8whp and 352.0tq
https://www.clublexus.com/forums/is-...ormance-2.html
To me a variable 34-38whp and a variable 16-18tq seems like a big difference. Trying to figure out what would account for this. Can the difference really purely be the exhaust?
I am not speaking out about one header or another or any other product for that mater just trying to figure out the facts.
So someone help clue me in here cause I am obviously not understanding something right. I know that from one dyno to the next things read differently however.
Takeda Intake, PPE headers, Custom Dual Exhaust = 382whp 368tq
https://www.clublexus.com/forums/is-...headers-6.html
Tom's Filter + JoeZ Intake + Sikky Headers + ISS-Forged Exhaust = 416whp and 350tq
https://www.clublexus.com/forums/is-...lter-joez.html
Injen Intake + Sikky Headers + JoeZ Exhaust = 420.8whp and 352.0tq
https://www.clublexus.com/forums/is-...ormance-2.html
To me a variable 34-38whp and a variable 16-18tq seems like a big difference. Trying to figure out what would account for this. Can the difference really purely be the exhaust?
I am not speaking out about one header or another or any other product for that mater just trying to figure out the facts.