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Originally Posted by eh?
The Greddy IM will make a difference IF you take advanatge of the ability to run more timing. A standalone is a a requirement with the RB25 otherwise whatever you do is pretty much worthless. With the Greddy IM and a standalone like the PFC or aem EMS you can see 300 WHP with stock boost. But like I said You need a standalone to take advantage of it.
This is first hand knowledge.
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i really dont think you can run 300whp on stock boost, go check out the skyline forums you dont see anything above 220-230whp on stock boost, some even around 200whp. i myself dynoed a little over 250whp at just under 10psi, with a Mine's tuned ECU. power fc/aem can only give you so much, to get to 300whp you need the tune AND the boost turned up. Also you're correct about the intake manifold, if not taken advantage of, you probably loose some power if anything. The only way to take advantage of the Greddy is to turn up the boost, preferably with a new turbo.
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Originally Posted by amplifi3d
2 more questions guys! What kind of radiator do i need? Will s13 koyo fit? What if im not getting the r33 crossmember? Can i still use the mckinney kit? Thanks!
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Radiator you can use any KA spec one, Koyo works but may heatsoak if you're unlucky.
Mckinney kits work ONLY with the KA crossmember, with the use of their um questionable quality brackets and mounts
You only need the R33 crossmember for the Syko Kit, which many people would recommend over the Mckinney. Like 250sxdet said, i can get you the kit if you want it over the Mckinney.