Headers and FI
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Twin turbo kits come with exhaust manifolds or tubular headers so the crawford headers would have to come off. I've read about someone using headers with the TN ST, but they said it wasn't a good idea cause of fitment issues.
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Originally Posted by Cannysage
I'm considering the crawford headers. Any input? any power gains? I may go fi later and can I still use it?
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Originally Posted by Cannysage
hmm.. yeah, it maybe a good idea to stick with stock headers.. don't want to deal with a bunch of issues..
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#8
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I have the Vortech and the Topspeed headers. Works for me. I have read that the reason you don't want headers with a ST setup is because the smaller diameter of the OEM exhaust manifolds create higher exhaust speeds or something like that which will help the turbo spool faster. A larger diameter manifold will slow down the gases and slow the spool time. This has been beaten to death over the past year and I think I may have paraphrased it correctly.
I think with a SC setup, you will want headers as the better the breathing and exhaust mods, the better.
I think with a SC setup, you will want headers as the better the breathing and exhaust mods, the better.
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for headers, with the supercharger, im not a big fan at all, i would keep the stock manifolds and use high flow cats... the stock manifolds are great
for FI... IF you did headers, with the supercharger, i would do nismo or crawford... but, my personal choice, no headers and keep stock manifolds...
for FI... IF you did headers, with the supercharger, i would do nismo or crawford... but, my personal choice, no headers and keep stock manifolds...
#15
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I took my DC headers off when the TN was installed for fear of fitment issues that most were having. Didn't want to have vibrating issues once everything had been done & be bothered with uninstalling the headers. I did have the OEM headers Jet Hot 2000 coated & it does help keep the heat under control.
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