12-04-2010, 09:46 PM
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#11 (permalink)
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Track Member
Join Date: Oct 2009
Location: Canada
Posts: 514
Drives: 09 Nissan 370Z M6
Rep Power: 17
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Originally Posted by crash1369
 Holy Christwagons... I just read this whole thread, start to finish. Fast Intentions, I hate you now  I was supposed to be saving money with this car 
Anyway if you guys can bear with me, there seems to be some holes in this thread... or maybe it's my brain  So I want to recap/ summarize.
It seems you can get similar numbers with the OEM header-manifolds, what ever they are considered and no cat's these headers off a much broader power band right?
On the same token it seems with the headers, if I read all of this correctly, a new intake doesn't add a whole lot of power right? I didn't see anyone say they changed their intakes after they put on the headers, looks like everyone is either still using the OEM intake or they already had an aftermarket. Do you guys still think it would be worth swapping, You would still get better throttle response, etc right? It seems the Stillen G3 causes the car to run a little lean with these headers? Otherwise the Injen intake seems to perform about the same right, and I suspect would help with the air/ fuel ratio? Or given the minimal gains is it not really even worth getting an intake like that, would I be better off with a more OEM/ shorter style (not sure of a specific one right now?) if it did not come at the expense of performance the lower cost would certainly be nice but more importantly they are much easier to install and service right, besides being better protected from water and other road debris? I don't even like the idea of having to pull my bumper off once just to install them, every time to change filters just seems crazy.
Additionally, can somebody (Tony?) send me the install instructions for these headers and I assume there are some for the exhaust as well? |
Ok~. first of all it was quite hard to understand what you were getting at but from my brief summary questions really boil down to,
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1. Is tune necessary with LHT+CAI?
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From what i gather, tune is necessary for Stillen CAI + full exhaust mod. People reported running quite lean with full exhaust mod + Stillen CAI. I'm not too sure about Injen though. But generally, in order to get the most out of your system, you'd need a tune.
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2. Is CAI worth the money with exhaust upgrades?
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IMO, no. 370z comes with CAI..well it's functionally Cold air intake that has filter inside the engine bay. With after-market CAI, you'll be most likely achieving minimal gains with full exhaust mod at the top range of the RPM.
It really depends on how much is that extra hp worth to you.
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3. Should I just get SRI?
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No, just keep the stock one. Stock one is efficient until the top range of RPM.
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