I've never seen 470+whp on any stock VQ35DE and it only costs $7,499.99 for a complete package, about the same price as the Sound Performance kit.
http://www.speedforceracing.com/inde...productID=1012


@10+ PSI.

You could make 600whp on stock motor..but it probably won't last more than a day.

Some shop a year or two ago did I think 550whp on stock motor and took it to the track..on the last lap of the day it let go. It can make the power but at anything higher than 400whp you're just asking for a blown motor.

Most any of the kits can make this power, its just many people to not run them this high.

You're right. But there's probably plenty of kits out there that probably wont even hit 470+whp before blowing up the motor.
That's the thing. I've never seen another one.

The kit doesn't really determine or help the motor stay in one piece...at 470whp no matter the kit including SFR it will blow up sooner or later.

I think Tim at SFR has and may continue to have one of the longest high hp stock motor builds ever reported. I think Sylvan_LakeG35 is now running 600+ whp on a stock motor... The SFR kit with large turbos and tubular manifolds is efficient and pushes the curve to the right, so if you don't rev too high, you may have a better chance of getting away with it.

I wouldn't trust that on a stock block.

thats not all that unbelieveable, I know someone w/ an APS TT thats running over 450rwhp+ for the past 3-4 years

Holy ****. What EMS?

I thought he was built?

http://www.canibeat.com/2010/07/the-...form-function/

He built his. He is running 630whp on 92 octane WITHOUT water/methanol. Crazy.

ya dont see what the big fuss is... pk trq at 5500 rpms helps reduce the strain on the engine compared to a much smaller turbo greddy making peak trq at 4000 rpms.

The turbos are barely taxed so the AITs are low. 470whp is well safe for pump gas. All the contributes to low chance of detonation.

Its not the matter of detonation, its if your rods can handle it without bending or snapping.

Is that sperco I/C a good brand? seems very nicely built.

detonation is the #1 killer of stock rods. of course there are physical limitations as well, but as posted above there are MANY examples of far exceeding the "recommended" power. If those guys were to ping, even once bye bye motor.

And everything I mentioned above contributes to no detonation.